operator's compartment - justanswerww2.justanswer.com/uploads/sahuarita009/2009-12-21...2009/12/21...

Operator's Compartment

This section provides the operator with importantoperational and general information. The followingdivides the Operator's Compartment into four majorparts. The first part of this section covers theInstrument Panel. The second part of this section cov-ers the Operator's Compartment Controls. The SideConsole Switch Panel forms the third part of this sec-tion. Information about the Driver's Seat completesthe section.

It is important to carefully read and understand the fol-lowing pages before operating the coach. A properunderstanding of component location, function andoperation is important to the proper operation of thecoach.

1. Speedometer, Programmable2. Fuel Gauge3. Indicator Light Panel, 14 Lamp4. Dual Air Pressure Gauge5. Tachometer6. Transmission Shifter, Five Speed7. Water Temperature Gauge8. Voltmeter9. Oil Pressure Gauge10. Transmission Oil Temperature Gauge11. Headlight Switch, with Light Dimmer12. Dome Plug 3/16"13. Ammeter

14 Heater Control Panel Assembly15. Blank Switch, Hole Plug V-Series16. Fresh Air, Outside17. Retarder Transmission Pilot Light18. Retarder Switch, ON-OFF19. Fast Idle Switch20. Ignition Switch21. Park Brake Valve (Air Brakes)22. Wiper Switch, 20 Amp LOW-HIGH23. Blank Gauge (Dummy)24. Windshield Washer Switch25. Intermittent Wiper26. Dome Plug 5/8"

Instrument Panel, with AT545 Transmission

1. Speedometer, Programmable2. Fuel Gauge3. Indicator Light Panel4. Dual Air Pressure Gauge5. Tachometer6. Transmission Shifter, Five Speed7. Water Temperature Gauge8. Voltmeter9. Oil Pressure Gauge10. Transmission Oil Temperature Gauge11. Headlight Switch, with Light Dimmer12. Dome Plug 3/16"13. Ammeter14 Heater Control Panel Assembly

15. Blank Switch, Hole Plug V-Series16. Fresh Air, Outside17. Idle/Diagnostics18. Engine Diagnostics19. Fast Idle Switch20. Ignition Switch21. Park Brake Valve (Air Brakes)22. Wiper Switch, 20 Amp LOW-HIGH23. Blank Gauge (Dummy)24. Windshield Washer Switch25. Intermittent Wiper26. Dome Plug 5/8"27. Heater Controller28. Pilot Lamp Gauge, ISB-ISC

Instrument Panel, with MD 3060 Transmission


The fuel gauge indicates the amount of fuel in thetank.

Fuel Gauge

The Instrument Panel is a critical element in monitor-ing the operating condition of the coach. In addition toits monitoring features, the instrument panel enablesthe operator to perform a variety of tasks necessaryfor proper coach operation.

Various options and specifications dictate the numberof gauges and controls installed on our coach. Referto the specific information about the components.

The speedometer indicates coach speed in miles perhour (mph) and kilometers per hour (kph). Theodometer registers the total accumulated miles/kilo-meters driven. The odometer can register up to9,999,999.9 and will then reset to zero. Speedometersmust be recalibrated should you change tire sizeand/or rear axle ratio. Contact your local Thomas dis-tributor.

Speedometer/Odometer

1. Turn Signal Indicators - Flash when the out-side turn signals are operating or when haz-ard lights are on.

2. Park Brake Light - Indicates park brake isengaged.

Caution: To avoid possible damage to the vehicle,do not drive while the parking brakelight is illuminated.

3. ABS System Fault Indicator - The warninglamp blinks once, then goes off and stays off,unless the system detects a problem.

4. Engine Compartment Temperature WarningIndicator (Natural Gas Engines only).

5. Low Air Pressure Indicator - This indicator,upon activation, indicates that the air pres-sure in the brake air system (primary-rear,secondary-front, or both) has dropped to 66psi (46 kPa) or below. The low air pressureindicator becomes red upon activation and isaccompanied by a buzzer. As air pressureexceeds 66 psi (46 kPa), the indicator andbuzzer are deactivated. The air pressureswitches are factory set at 66 +/- 6 psi (46 +/-4 kPa).

Caution: If the air pressure light comes on duringnormal operation, only a limited numberof brake applications will be available,and braking distance will increase.

6. Park Light Indicator - Becomes illuminatedwhen park lights are activated.

7. Check Engine Indicator - When a problem isdetected by the engine's electronic system, adiagnostic code is generated and the Check

Engine lamp is turned ON.

8. Fasten Seat Belt Indicator - Indicates that dri-ver's seat belt is not buckled.

9. Low Coolant Indicator - The low coolant levelindicator lamp becomes illuminated when thecoolant level is low. If this lamp comes onwhile driving, stop the bus and check the levelin the cooling system surge tank.

Before filling the system with coolant, checkfor leaks. See Maintenance Section for prop-er fill procedures.

10. Intake Air Heater Indicator - When the ECM isfirst powered up, the Inlet Air Heater Lampshould come ON for a minimum of two sec-onds. If heater is operating, lamp should turnON, and then OFF when the cycle is com-plete.

11. Check Transmission Indicator (Allison MD-3060) - Transmission Fault Indicator.

12 High Beam Indicator - Indicates that vehicle'sheadlights are on high beam.

13. Engine Warning Light - If this light remains onwhile driving, it indicates a potential engineproblem such as high engine coolant temper-ature or low engine oil pressure, and a needfor service.

Caution: Do not run the engine when the enginewarning light comes on unless neces-sary to find a safe place to stop the vehi-cle. Running the engine with this lighton could cause permanent damage tothe engine.

Indicator Light Panel


TachometerThe tachometer indicates engine speed in revolutionsper minute (rpm). The tachometer aids the operator inpreventing excessive engine speed when descendingsteep grades and using the engine as a brake. Thedriver should never exceed the maximum governedengine rpm or serious engine damage may result. Thehour meter indicates engine service hours and is usedto determine engine service and maintenance inter-vals.

Caution: Extended operation of engine aboverated speed will cause serious enginedamage.

The dual air pressure gauge indicates the levels of airpressure in the primary or rear axle brake system(white needle) and the secondary or front axle brakesystem (red needle). Both needles should indicate thesame pressure reading. Common cut-out pressuresare between 105-125 psi (72-86 kPa). Common cut-inpressures are between 90-105 psi (62-72 kPa). Thepressure range between cut-in and cut-out is notadjustable.

The rear brakes will gradually begin to apply when airpressure drops below 65 psi (45 kPa). At 40 psi (28kPa) the rear brakes will automatically lock up by actu-ating the PP-1 valve and allowing the air in the springbrake side of the brake chamber to be released.

Determine and correct cause of pressure loss beforereturning coach to service.

Warning: In the event that a pressure loss occurs,the operator can identify the affectedsystem by observing the gauge needles.Stop the coach immediately if either ofthe following conditions occur:

Low air warning buzzer sounds and/orindicator light comes on. When the airpressure drops below 60-72 psi (41-50kPa) the buzzer and light activated.

Caution: If one needle suddenly drops pressureand stays below 65 psi (448 kPa), theother system can still safely stop thevehicle, but it may take longer, stoppingdistances may be increased, and thebrakes can only be applied a limitednumber of times. Have the vehiclerepaired immediately if this occurs.

Dual Air Pressure Gauge

Transmission Shifter (Lever)

To put the transmission into gear, move the selectorlever from Neutral to the desired drive position.

Caution: Do not race the engine when shiftingfrom Neutral into another gear.

The available gears are:

(R) Reverse - Vehicle must be completely stoppedbefore engaging this gear.

(N) Neutral - Use when vehicle is standing for pro-longed periods with engine running. Set the parkingbrake if you leave the vehicle. Engine may be startedin this gear.

Caution: Set the gear selector to Neutral, engagethe parking brake, and turn off the igni-tion, even momentarily. Never leave thevehicle unattended while the engine isrunning. Unexpected sudden vehiclemovement may occur if these precau-tions are not taken. Do not allow thevehicle to coast in Neutral.

(D) Drive - For most city and highway driving.

(3) Third and (2) Second - For driving slowly in heavycity traffic or on mountain roads where more precisespeed control is desirable, and for climbing anddescending long grades.

To prevent excess engine speed, do not exceed 45mph (72 kph) in this gear.

(1) First - For driving up very steep hills and enginebraking at low speeds - 25 mph (40 kph) or less -when going downhill.

To prevent excessive engine speed, do not exceed 25mph (40 kph) in this gear.

Caution: Never depend on the transmission as anengine brake. The transmission willupshift, no matter what gear is selectedwhen the internal pressure reaches acertain level. A shift point will be creat-ed by high engine rpm.


Transmission Shifter (Pushbutton)

The Transmission Shifter displays a Select Modewhich shows your gear selection and the MonitorMode shows which gear the transmission is in.

When starting the vehicle (N) Neutral is selected.



To back the vehicle select (R) Reverse. When trans-mission is engaged, the Monitor will display (R)Reverse. The vehicle must come to a complete stopbefore shifting from (R) Reverse to a forward gear.

When (D) Drive is selected, the transmission will ini-tially engage (1) First gear. As the speed increases, itwill automatically up-shift. The Select Indicator willdisplay the highest range available and the Monitorwill display the current operating range. The vehiclemust come to a complete stop before shifting from (D)Drive to (R) Reverse.

Occasionally there will be a need to limit the trans-mission to the lower gears. To do this, utilize theArrow Up and Down buttons to select a specificrange. The Select Indicator will display your choiceand the Monitor will display the current operatingrange. This will not change until vehicle speed isreduced sufficiently to allow the transmission to down-shift.

The Mode button allows the driver to enable a sec-ondary shift schedule.

To access the Diagnostic Codes, press the up anddown arrows at the same time.


For more information, refer to your AllisonTransmission Operator's Manual.

WTEC II

Transmission Shifter (Pushbutton)

The WTEC III pushbutton shift selector has R, N, D,Arrow Up & Down, Mode Button, and a digital dis-play.

Select *(R) Reverse to back the vehicle. The vehiclemust come to a complete stop before shifting from (R)Reverse to (D) Drive.

(N) Neutral is selected when starting the engine, forextended periods of engine idle operation, and whenchecking vehicle accessories. With the pushbuttonselector (N) Neutral is selected by the ECU at start-up,unlike the lever shifter. This button has a raised edgeto enable the driver to touch without looking at the dis-play.



When *(D) Drive is selected, the transmission will ini-tially engage the lowest gear programmed for the (D)Drive position, usually (1) First gear. As the speedincreases, it will automatically upshift. As the vehicle

slows down, the transmission will downshift. The vehi-cle must come to a complete stop before shifting from(D) Drive to (R) Reverse.

Occasionally there will be a need to limit the trans-mission to the lower gears. To do this, utilize theArrow Up and Down buttons to select a specificrange. The digital display will Indicator your choice.This will not change until vehicle speed is reduced suf-ficiently to allow the transmission to downshift.

The Display Mode button allows the driver to enable asecondary shift schedule.

To access the Diagnostic Codes, press the up anddown arrows at the same time. To clear active faultcodes, hold the mode button three seconds until modeLED flashes.


NOTE: *(R) Reverse or (D) Drive position may be pre-vented when a damaging or undesirable rangeengagement would occur due to a vehicle logic orengine speed condition.

For more information, refer to your AllisonTransmission Operator's Manual.

WTEC III


Water Temperature GaugeThe water temperature gauge indicates the tempera-ture of engine coolant. Normal coolant temperature fora coach in service is 165-2200F (74-1040C).

Should coolant temperature remain below 1650F(740C), the engine thermostat should be removed andtested. Should coolant temperature remain above2200F (1040C), check engine coolant level, conditionof the water pump, fan belt tension, and presence ofmud, leaves, or other foreign material build-up in frontof radiator.

Important: If the engine continues to overheat,have the cooling system checked andrepaired.

The voltmeter indicates the overall status of batterycondition and charging system performance. Undernormal conditions (ignition switch on, engine off), thegauge should indicate approximately 13 volts (batterycondition). With engine running, the gauge shouldindicate approximately 14 volts (charging system per-formance).

Voltmeter

The oil pressure gauge indicates engine oil pressure.Normal oil pressure is 30-70 psi (21-48 kPa) withengine running at normal operating temperature. Atidle speed, the oil pressure may drop to 5-20 psi (3-14kPa). When first starting a cold engine, the oil pres-sure may exceed 90 psi (62 kPa) at full governedengine rpm.

Caution: Do not continue to operate your engineif the pointer is below the normal oper-ating range. Your engine may be seri-ously damaged.

Oil Pressure Gauge

Ammeter (Optional)The ammeter indicates the amount of current flow, inamperes, through the coach electrical system.

The transmission oil temperature gauge indicates thetemperature of oil in the transmission. Maximum oper-ating temperature should not exceed 3000F (1490C)for transmissions. An increase in temperature is nor-mal when ascending grades or when extended use oflower gears is experienced.

Transmission Oil Temperature Gauge (Optional)

Headlight SwitchThe headlight switch is a three position switch thatcontrols the main lighting circuit. Position 1 (com-pletely in) is the OFF position. Position 2 (first click)energizes the parking lights, taillights, marker/clear-ance lights, instrument and panel lights. Position 3(completely out or second click) energizes the head-lights.

Rotating the headlight switch counterclockwise pro-gressively dims the dashboard instrument lamps untilthey are fully off. Clockwise rotation of the headlightswitch progressively brightens the instrument lampsto full brightness.


Fresh Air, OutsideAllows fresh air from the outside to enter the driver'scompartment by the driver's left leg. Pull to open vent.Push to close.

Heater Control Panel AssemblyWhen heater master switch is activated by the coachoperator, the fan, fresh air circulation, and defrostercan be adjusted by turning the knobs on this panel tothe desired position.

1. This knob controls the temperature of air flow-ing from the heater.

2. Controls the air coming into the unit. Theheater can use fresh air from outside the vehi-cle or recirculate within the vehicle.

3. Controls the amount of air that is sent to thewindshield area.

Retarder Transmission Pilot Light (Optional)With the retarder switch on, the amber retarder in use,light will illuminate with any pressure to the brake trea-dle or activation of the hand control. It will continue toilluminate until the coach operator releases the brake.

The red "Retard Over Heat" lamp will come on if theretarder is allowed to overheat. This may happen withexcessive use in hilly terrain or heavy traffic. When theoverheat lamp comes on, the coach operator mustfind a place to park the vehicle until the unit coolsdown. The light will stay activated until the unit coolsdown to a safe temperature.

Caution: If the unit is operated with the red lighton, it could result in serious transmis-sion damage.

Retarder Switch, On-Off (Optional)This switch activates retarder in the transmission. Theretarder in the transmission becomes activate whenthe coach operator applies pressure to the brake trea-dle. There are three switches that control the amountof retarder capacity used. Light pressure on the braketreadle will activate one-third braking capacity of theretarder, while a moderate amount of pressure will uti-lize two-thirds of the breaking capacity of the retarder.Heavy brake application will use all retarder capacityto slow and stop the vehicle.

A hand control is also available on some modelswhich gives the coach operator six different levels ofretardation.

Idle/Diagnostics Switch - Cummins ISB/ISC Engines OnlyThe low idle/diagnostic increment/decrement switch isa dual-function switch, installed on the vehicle dash-board that adjusts the low engine idle speed. It is alsoused during onboard diagnostics to move through thediagnostic fault code list when the diagnostic testswitch is turned on.


Cummins ISB/ISC - An on/off switch for controllingonboard diagnostics.

Caution: Care should be taken not to turn on accidentally.

Additionally if the key switch is turned on but the diag-nostic switch remains off, the indicator lamps (stop,warning, water in fuel, and wait to start) illuminate forapproximately two seconds and then go off, one afterthe other, to verify they are working and wired cor-rectly. This is part of the normal operation of thepower-up sequence. If an active fault is present, oneof the three lamps will remain lighted, determined bythe type of fault being sensed. When engine mainte-nance is needed the warning lamp will flash uponengine power up. When cold starting algorithms areactivated, the wait to start lamp will remain on untilgrid heaters have timed out.

When the diagnostic test switch is turned on, the red(stop) and yellow (diagnostic) indicator lamps light

and remain lighted if there is no active fault. If there isan active fault, the red lamp flashes in a sequence ofpulses to indicate that specific fault code.

Caterpillar 3126B - A Diagnostic Enable input isavailable to prompt the ECM for flashing DiagnosticFlash Codes. The ECM will begin flashing and contin-ue to flash out codes while the input is shorted to theECM AP Sensor/Switch Sensor Common.

Engine Diagnostics Switch

Pilot Lamp Gauge - Cummins ISB/ISCThe 1998 ISB and ISC systems use four indicatorlamps: yellow/"Warning" lamp, red/"Stop" lamp, "Waitto Start" lamp, and a "Water in Fuel" lamp.

Dash Warning Lamp - Caterpillar 3126BThe "Check Engine" lamp is located in the "IndicatorLight Panel". It is used to indicate diagnostic codealert and to alert the driver to impending idle shut-down. The Warning Lamp is used for EngineMonitoring to indicate an active problem. A flashingWarning Lamp indicates the engine is derating power.

The operator may elect to engage the "fast idle" throt-tle on the dash. The fast idle will continue to operateuntil the gear selector is moved to either a forward orreverse position. The system is designed to turn offwhen the transmission gear selector is moved fromthe neutral position.

Allowing the engine to "warm up" before the normalroute will cause less stress on "cold components" inthe power train. This "warm up" time should rangefrom 3-5 minutes, depending on the ambient temper-ature.

Fast Idle Switch

Cruise Control Switch, On-Off (Optional)Activates or deactivates the cruise control.

Switch must be in "On" position for the Cruise Control Set/Resume Switch to operate.

Note: On Caterpillar 3126B when equipped with cruise control, the engine diagnostics switch is not used. This switch will double for diagnostics.

Cruise Control Switch, Set/Resume (Optional)

Momentary switch that allows the driver to set thedesired vehicle speed. When this speed is reached, itis maintained by pressing the switch to the "SET"position to lock in.

Touching the brake or accelerator pedal will overridethe "SET" function.

To return the vehicle to the desired speed, press theswitch to the "RESUME" position. The vehicle willreturn to its preset speed.


Master Control Switch (Optional)Replaces the standard headlight switch and operatorsin conjunction with the ignition switch. It contains fouroperating positions: OFF, DAY, NIGHT, and PARK.

OFF Position - With the master control switch at OFFposition, only the emergency flashers, brake lightsand horn are energized. Rotating the master controlswitch from either the DAY or NIGHT positions to theOFF position shuts the engine off.

DAY Position - Rotating the master control switchfrom OFF to DAY position energizes the ignition circuitand allows the operator to start the coach with theengine start button. All circuits are energized with theexception of interior and exterior lighting.

NIGHT Position - Rotating the master control switchfrom DAY to NIGHT position energizes the remaining

interior and exterior lighting circuits. All systems areenergized at NIGHT position. NIGHT position shouldbe used for early morning, late evening, and nightoperation.

PARK Position - With the master control switch atPARK position, only the interior lights, brake lights,clearance lights, emergency flashers and horn areenergized.

The keyless ignition switch with anti-restart is offeredas an alternative to the standard keyed switch. Turnthe keyless ignition switch clockwise to start coachengine. Release switch as engine starts.

Keyless Ignition Switch (Optional)

Ignition Switch (with Anti-Restart Feature)The ignition switch is a four position key switch thatcontrols the cold ignition circuits. The four positionsare as follows:

Position 1 (vertical) is the OFF position. The key canbe removed only at this position.

Position 2 (one click counterclockwise) is the acces-sory position. This position energizes the accessorycircuits only.

Position 3 (one click clockwise from off) is the ON orRUN position. This position energizes the ignition,alarm, and accessory circuits.

Position 4 energizes the engine starter. This positionis spring-loaded. The switch automatically returns toPosition 3 upon release.

Once the switch is turned to Position 4 and released,it must be returned to Position 1 before attempting torestart the engine. The ignition switch contains ananti-restart feature to prevent engaging the starterwith the engine running.

Ignition switch keys have numbers. Record your keynumber for reference if lost.

Wiper Switch, 20 Amp LOW-HIGH

Activates selected windshield wiper to operate onLOW or HIGH speed.

The parking brake applies or releases the coach park-ing brake. Pulling out on the parking brake knobapplies the parking brake. Pushing the handle inreleases the parking brake.

Danger: Whenever the vehicle is put in to neutral,the parking brake should be applied orthe vehicle could begin to move andcause bodily harm.

Park Brake Valve (Air Brakes)

Windshield Washer Switch

A momentary switch which enables windshield wash-er fluid to be pumped from the fluid reservoir.

Intermittent Windshield Wipers Controls (Optional)To activate selected wiper arm, turn control knob fromOFF position clockwise. The closer to the OFF posi-tion, the longer the interval. Turning the knob clock-wise will gradually decrease the delay in wiper action.


Webasto Heater Controller (Optional)

1. Program number for preset time.2. Time of day / preset time / display of operating

duration.3. Display of day of the week.4. Operating indicator.5. Setting / viewing the time; setting / recalling day of

the week.6. Presetting / recalling starting time; setting / recall-

ing day of the week.7. Heater On/Off.8. Reverse key for setting time of day or heater start-

up time;viewing and reducing operating duration / remain-ing operating time.

9. Forward key for setting time of day or heater start-up time; presetting day of start-up; extendingoperating duration / remaining operating time.

General:The 7 day digital timer with 3 time settings enablesyou to preset the start of the heater operation up to 7days in advance.

It is possible to program 3 different starting times, onlyone of which can be activated.

When the ignition is switched on, the timer displaysthe current time and the day of the week. When theheater is switched on, the display and the buttons areilluminated.

After the power supply has been connected, all sym-bols on the display will flash. The current time andweekday must be set.

Operation:The timer can be operated in that all flashing symbolscan be adjusted by means of the Left-pointing Arrowbutton (item #8) and the Right-pointing Arrow button(item #9).

If no adjustments are made within 5 seconds, the cur-rent setting displayed will be stored in memory. If theLeft and Right-pointing Arrow buttons are pressedfor more than 2 seconds, the fast time-setting mode isactivated.

If the ignition is switched off while the heater is oper-ating in the continuous mode, the remaining operatingtime of 15 minutes is displayed and the heater contin-ues to operate for this period of time.

Whenever battery voltage is disconnected all pro-grammed settings will be lost.

Switching the heater on:Manually - by pressing the Heater On/Off button (item#7) (continuous heating mode).Automatically - by programming the heater startingtime.

Switching the heater off:Manually - by pressing the Heater On/Off button (item#7).Automatically - after the programmed operating timehas elapsed.With the heater running - by programming the remain-ing operating time.

Setting time/day of the week:Press the Clock button (item #5) for more than 2 sec-onds - time of the day is flashing - and set the clockusing the Left-pointing Arrow button (item #8) andthe Right-pointing Arrow button (item #9). Day of theweek is flashing - adjust the day of the week.

Viewing the time:With the Ignition switched off; press the Clock button(item #5).

(Continued on next page.)

Webasto Heater Controller (Optional) - (continued)Programming heater starting time:Press the Upward-pointing Arrows button (item # 6)- the memory location is flashing - using the Left-pointing Arrow button (item #8) and the Right-point-ing Arrow button (item #9) set start of the heateroperating time. Day of the week is flashing - set theday of the week. By repeatedly pressing the Upward-pointing Arrows button (item # 6), memory locations2 and 3 can be programmed or the time display modecan be reached.

Recalling/erasing preset times:Repeatedly press the Upward-pointing Arrows but-ton (item # 6) until the desired memory location is dis-played. To erase the preset time, press the Upward-pointing Arrows button (item #6) several times untilthe time of the day is displayed instead of the memo-ry location.

Programming duration of operating time:The heater must be switched off. Press the Left-pointing Arrow button (item #8) for 3 seconds - oper-ating time is flashing - and set the desired operatingtime (10 to 120 minutes) using the Left-pointingArrow button (item #8) and the Right-pointingArrow button (item #9).

Setting the remaining operating time:Set the desired remaining operating time (1 to 120minutes) using the Left-pointing Arrow button (item#8) and the Right-pointing Arrow button (item #9).The remaining operating time refers to the time theheater still continues to remain in operation. It canonly be changed while the heater is in operation andthe ignition switched off.

Remote control:Possible by means of an optional external signal.


The emergency flashers enable the operator to alertother motorist of the coach's position in the road.Pulling the knob out activates the emergency flashers.Pushing the knob in deactivates the emergency flash-ers.

The emergency flashers should be activated when thecoach is disabled in the street and obstructing traffic,stopping due to an emergency, in tow, or proceedingat very reduced speed.

Emergency Flashers

Turn Signal Lever/Dimmer SwitchThe turn signal lever serves the dual purpose of ener-gizing the coach turn signals and changing the coachheadlights from one setting to the other.

To activate the turn signals, move lever downward fora left-hand turn or upward for a right-hand turn. Turnsignal lever automatically cancels after turn is com-plete.

To switch headlights from the low beam setting to thehigh beam setting, pull the turn signal lever upwardand release. To return coach headlights to the lowbeam setting, pull turn signal lever upward again andrelease.

The coach's headlights have an optional high beamflash provision. With the headlight switch in the ON orOFF position, pull upward on the turn signal lever andrelease to flash high beams.

The electric horn alerts other motorists, pedestriansand waiting passengers of coach presence. Pushdown on center part of steering wheel to activate horn.Release pressure to deactivate horn.

Horn, (Electric) Button

Operator's Compartment ControlsThe following pages provide information on the con-trols in the operator's compartment. The design, loca-tion, and mounting position of these controls enable

the operator to perform a variety of tasks without mov-ing from the driver's seat.

Tilt/Telescoping Steering Column (Optional)The tilt steering column enables the operator to adjustthe angle and height of the steering column to a morecomfortable driving position.

To adjust the angle of the steering column, locate thesmall lever underneath the turn signal lever. Pull levertowards steering wheel and hold while tilting the steer-ing wheel at a comfortable position. Release lever tolock column in position.

To adjust the height of the steering column, locate thesmall lever underneath the turn signal lever. Push thelever and hold while telescoping the steering wheel tothe desired position. Release lever to lock column inposition.

Caution: Do not adjust while vehicle is in motion.

Power steering uses energy from your engine toassist you in steering the vehicle. When the engine isoff, or if the power system becomes inoperative, thevehicle can still be manually steered, but requiresincreased driver effort.

Should you notice any change in effort required tosteer during normal vehicle operation, have the powersteering system checked. a hissing sound at full left orfull right steering wheel position is normal.

Caution: Never hold the steering wheel againstthe stops (extreme right or left) for morethan five seconds. If you hold the wheelagainst the stops longer than five sec-onds, the power steering pump could bedamaged.

Note: After any severe impact such as strikinglarge potholes, inadvertent sliding intocurbs on icy roads, or a collision involvingthe front end, observe the steering wheelalignment. If the spokes of the wheel seemto be in a different position while driving,have the front suspension and steeringchecked for possible damage.

Power Steering

The brake pedal controls the application of the coachservice brake. Downward pressure on the brake pedaldecreases the coach speed by applying air to thebrake chambers at each wheel and stops the coachwhen desired by the operator. Anticipating the stopand using light application of the brakes will result inincreased life of brake linings and drums. Continuousheavy applications result in premature wear due toexcess heat.

Brake Pedal


Sun VisorAn optional sun visor is available in two versions. Aplexiglass 6" x 30" with aluminum legs mounted overthe driver's window and/or over the right side of wind-shield. Also a 7" x 30" California sun visor mounted inpivot brackets over the driver's window. Clean withplexiglass cleaner and a soft dry towel. Never use anabrasive cleaner. Keep mounting brackets tight.

Radio Controls - See Radio Operator's ManualA separate operator's manual is supplied when vehi-cle is equipped with Radio or PA.

The accelerator pedal controls the rpm of the engineand coach speed. This control is operated by air pres-sure to the engine.

Accelerator Pedal (Cummins 6B, 6C, Caterpillar 3116)

The accelerator pedal is an electric rheostat type con-trol that sends a gradually increased current to theengine to control engine rpm and coach speed.

Electronic Accelerator Pedal (Caterpillar 3126 & 3126B, Cummins ISB & ISC)

The Doran exterior light monitoring system (4, 8, 12,16) monitors the condition of those exterior coachlights identified by the type of monitor board. Themonitor provides the operator with the location of anymalfunctioning light. In the event that a bulb hasbecome damaged or burned-out or the circuit is inter-rupted, a corresponding light on the Doran panel goesoff. The Doran panel should be checked daily to veri-fy the operation of all warning lights.

Doran Monitor, Exterior 4 or 8 Light (Optional)


Side Console Switch PanelThe Side Console Switch Panel contains the controlsfor coach heaters and defrosters, destination signlights and other standard and optional body groupcontrols. All switches are easily accessed by the oper-

ator. A typical side console switch panel is shownbelow. The layout of your side console switch panelmay differ slightly due to coach specifications andselected options.

1. Diffuser, Round2. Switch, Door Control3. Switches, Blank

4. Buzzer, Door Open5. Power Outlet, 12 Volt

Blank Switches

Blank panels are used to fill in openings in the switchpanel where switches are not used.

DiffuserThe round diffuser deflects warm air from thedefrosters to the side glass above the side consoleswitch panel. The socket of the diffuser is adjustableby moving the louver located in the center.

Door Control SwitchControls the flow of air to and from the front doorallowing it to open and close.

An emergency release valve is mounted over thewindshield beside the door which allows the door tobe opened without air pressure.


Eight Light Warning Buzzer (Optional)Mounted on the driver's switch cabinet to alert the dri-ver when the door is opened.

The interior light switches energize all the coach inte-rior dome lights except the one directly above the dri-ver.

Interior Light Switches

Power Outlet, 12 Volt (Optional)Supplies a 12-volt power supply source for driver add-on accessories, such as cellular phones and two wayradios.

Located on the side of the switch cabinet, the outlet iswired hot through the battery with a 10 amp in-linefuse.

Rear View Mirror Control Switches (Optional)Located on the driver's switch cabinet. Controlsremote adjustment and heat for both upper flat andlower convex mirrors (left side and right side) inde-pendently.

Mirror Defroster Switch (Optional)The mirror defroster switch energizes the defrosterstrips in the exterior mirrors.

Destination Sign Switch (Optional)The destination sign switch energizes the coach des-tination sign light.


Fog Lights Switch, ON-OFF (Optional)Controlled by the coach operator and activates foglights for better visibility in inclement weather.

Lift Switch, ON-OFF (Optional)Controlled by the coach operator, must be ON to oper-ate the lift.

With the "Lift Switch" enabled, and the green warninglight on; lift has been activated. This will activate thebrake interlock system and the side exit door light.

Lift, (Warning) Green (Optional)

Horn, Air (Optional)Momentary switch that activates the air horn mountedbeneath the driver's vestibule floor.

When switch is released, it returns to the off position.

Underseat Heater Fan Switches (Optional)The underseat heater fan switches enable the coachoperator to control the fan speed of the underseatheaters. The fans operate at either LOW or HIGHspeed.

The marker light switch energizes the coach markerlights.

Marker Lights Switch (Optional)

Dome Light Switch, On-Off (Optional)The driver's dome light switch enables the coachoperator to energize the dome light above the opera-tor's compartment.


Booster Pump, ON-OFFThe booster pump switch energizes an auxiliarycoolant booster pump to circulate coolant to theheaters when engine is idling or when stop and go dri-ving conditions reduce coolant flow due to low enginerpm.

Air Conditioning Master Switch, ON-OFF (Optional)The air conditioning master switch enables the coachoperator to energize or de-energize the air condition-ing system.

Defrost Heater, LO/HI/OFFSwitch enables the coach operator to control fanspeed of the windshield defrosters. Fan blows warmair across the windshield to remove moisture whichcauses windshield fogging.

The switch on the left controls the fan speed for the airconditioning while the switch on the right controls thetemperature or amount of cooling as the air passesthrough the system.

Air Conditioning Master Switch (Optional)

Heater Master Switch (Optional)

Separate switch enabling power to all heater motorsand defroster motors to be cut off simultaneously.

Sander Switch (Optional)Switch located in the driver's area, enables coachoperator to energize the wheel sanders that mountforward of the rear wheels. Sand is released onto thestreet to increase traction.

Air Tank Drain Switch (Optional)Momentary switch that allows the driver to activate thesolenoid drain valves located on the wet, primary, andsecondary reservoirs.


Microphone Jack (Optional)When a remote mounted microphone is ordered. Holewill be plugged when not ordered.

Override Switch, On-Off (Optional)Will override the eight light warning system and de-activate it.

Push Button Eight-Light Warning System (Optional)Used as part of an eight-light warning system thatcontrols the entrance door.

As coach approaches stop, this switch energizesamber warning lights when pressed.

Amber lights remain on until red lights are energized.

Door Switch Eight-Light Warning System (Optional)Three-position switch that activates red warning lightsand operates the entrance door.

The first position, door is closed. With amber lightsactivated by push button switch, the second positionwill activate the red lights. The third position will openthe door and continue to operate the red lights.

Moving the switch back to the second position or cen-ter will close the door, while the red lights remain on.

The first position will turn the lights off.

Driver's SeatThe driver's seat is designed to accommodate a vari-ety of driver builds and seating preferences. The fol-

lowing adjustments enable the seat to be moved formaximum driver comfort:

1. Backrest Tilt - Rotate the knob for infinite selec-tion of settings.

2. Cushion Height Front - Lift handle, pull up andforward. Choice of two settings.

3. Seat Fore-and Aft - Move the lever left and slideseat. Provided for locked-in settings in 1/2"increments.

4. Rear Cushion Adjuster - Rotate lever to adjustheight. Choice of three settings.

5. Seat Height Adjustment - Pull paddle rearwardto adjust height. To raise seat, pull handle whilebody weight is removed from seat. To lowerseat, pull handle while sitting in seat. Releasehandle at desired height - infinite selection ofsettings.

6. Lumbar Adjustment - To fully inflate lumbar,depress valve button while all body weight isremoved from seat back. To deflate lumbar,depress valve button while maintaining desiredseating position.

Mechanical Base Seat

Caution: DO NOT adjust seat whilevehicle is in motion.


1. Backrest Tilt - Rotate knob for infinite selectionof settings.


3. Seat Fore-and-Aft - Move lever left and slideseat. Provided for locked-in settings in 1/2"increments.

4. Rear Cushion Adjuster - Rotate lever to adjustheight. Choice of three settings.

5. Seat Height Adjustment - Push rocker up toinflate. Push rocker down to deflate. Infinite

height and weight selection.

6. Lumbar Adjustment - Push rocker up to inflatelumbar. Push rocker down to deflate lumbar.

7. Optional Triple Chamber Air Lumbar - Lower,middle and upper chambers individuallyadjustable.

8. Optional Air Bolsters - Cushion and back indi-vidually adjustable.

9. Optional Height Adjuster with Memory - Rotatelever to select desired ride height - infiniteselection.

Air Base Seat


1. Backrest Tilt - Rotate the knob for infinite selec-tion of settings.


3. Seat Fore-and Aft - Move the lever left and slideseat. Provided for locked-in settings in 1/2"increments.

4. Seat Height Adjustment - Rotate the four (4)knobs on the box pedestal (two on each side) toloosen and select slot for desired height.Tighten knobs to secure in position.

Driver's Seat, with Box Pedestal



The driver's seat belt should be worn at all times whenoperating the coach.

Prior to adjusting or fastening the seat belt, adjust theseat to a comfortable driving position. Refer to theDriver's Seat part of this section for adjustment infor-mation.

Application - Hold buckle in one hand and pull con-nector belt across pelvic region (hip bone).

Make sure neither belt is twisted. Insert connector beltinto open end of buckle. A "snap" sound indicates theconnector belt is properly engaged with the buckle.However, tug on the belt to ensure that the connectorbelt is properly engaged with the buckle. The beltretractor automatically eliminates belt slack for a snugbut comfortable fit.

Adjustable D-Loop - To adjust the angle of the driver'sseat belt over the driver's shoulder. Push the releasetab up or down to allow the belt to slide in the track.Release the tab to allow it to lock into the closest posi-tion.

Release - The seat belts contain a push button locat-ed on the buckle. To release the belt push in on thebutton and the latch will disconnect from the buckle.

Caution: The driver must always wear a seat beltwhen operating the vehicle.

Driver's Seat Belts

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