STUDEBAKER-PACKARD CORPORATION

A P R I L NO.323195 7

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AIR CHAMBER BASE - 57H-Kand 57L MODELS

pLease record this articLe on the ServiceBuLLetin page in your 1957 Studebaker andPackard CLipper SuppLements.

A porous section in the air chamber basebetween the two gasoline line fittings couldresult ina gasoline leak. The gasoline mayleak to the outside; oi inside into the airchamber. A leak to the outside could veryeasily be detected. Rut, a leak to the insidewould not be found until the air chamber cover wasremoved. Of course, any leak results in poorgasoline mileage. However, a leak to the in-side of the chamber would also upset the fuel/airratio and directly affect the overall engineper forman ce ,

Therefore, on complaints of high fuel con-sumption or poor engine performance do not over-look this possibility. Replacement of the baseis necessary if porosity exists. Before re-placing the base make sure that the leakage isactually a case of porosity and not just astubborn leak at one of the fittings.

OIL PAN DAMAGE - FLIGHTOMATIC(WARNER GEAR) TRANSMISSIONPLease record this articLe on the Service

Bulletin Reference page at the end of thefransmission-flightomatic section of your 1956Stude9aker Passenger Car Shop Manual and theTransmission-Warner G~ar section of your 2ESeries frllcks Shop Manua L

using a'conventional floor jaCk to supportthe automatic transmission during the removaland installation may result not only in damageto the oil pan but, the pan may be distorted tothe extent that it will permit the weight ofthe. transmission to rest on the valve blOCk.This, in turn may distort the lower valve bodycover and cause the 1-2 shift valve to stick.

SOUTH BEND 27, INDIANA

MAY SAFETY.CHECK PROGRAM.PAGE

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STUDEBAKER and PACKARD CLIPPERAIR CHAMBER BASE - 57H-K AND 57L MODELSBAND SLIPPAGE AND ERRATIC SHIFT PATTERN

• FLIGHTOMATIC (WARNER GEAR)TRANSMISSION. • • • • •• • •••

INSTALLATION OF BATTERIE~ •••••••OIL PAN DAMAGE - FLIGHTOMATIC (WARNER

GEAR) TRANSMISSION ••••••••SEALER AND RUBBER CEMENT REMOVAL FROM

NEW VEHICLES •••••••••••SUPERCHARGER DRIVE BELT POSITION -

57H·K AND 57L MODELS ••••••

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PACKARD CIIPPERBELT ADJUSTMENT. 57L-Y MODELS WITH AIR

CONDITIONING AND POWER STEERING ••RADIO ANTENNA - 1957 PACKARD CLIPPER

MODELS •••••••••RADIO IGNITION NOISE PICKUP· 1957

PACKARD CL IPPER MODEL S ••TIME ALLOWANCE CHANGES - 1957 PACKARD

CLIPPER TIME GUIDE •••••••••

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Therefore. to avoid damage to the oil panand POSSible damage internally, use the properfactory recommended transmission jackand cradlewhen removing and installing the transmissionassembl s .

SEALER AND RUBBER CEMENTREMOVAL FROM NEW VEH ICLESsealer and rubber cement can be removed from

the finish of new vehicles by using painter'snaphtha. The application of naphtha willsoften the cement or sealer so that it can berubbed-off without harm to the finish. It maybe necessary to repeat the process severaltimes before completely removed. This, ofcourse, depends on the amount of sealer presentor the length of time the sealer has been per-mitted to remain on the finish.

GOO D C REA T E SSERVICE CUSTOMER GOO D W ILL

No. 323 S E R V ICE B U L LET I N April

AUTOMATIC TRANSMISSION BANDSLI PPAGE AND ERRAT IC SH 1FTPATTERNPlease record this article on the Service

BuLLetin Reference page at the end of theTransmission-?lightomatic section of your 1956Passenger Car Shop Manual and the AutomaticTransmission-Warner Gear section of your 28Series True ks Shop Manua.L

Loose control valve assembly or regulatorvalve assembly retaining screws can result inband slippage and an erratic shift pattern.The assembly can move off its seat enough topermit the oil to escape which means a drop 1noil pressure beyond these points. Obviously,with low oil pressure the servos and multipledisc clutches can not function properly. This,then, results in malfunctioning of the unit.

Therefore, it is extremely important thatthe screws are properly tightened to therecommended torque specifications. Thesespecifications are as follows:

pressure Regulator Assembly-to-Case Bolts. . . • •. 17 - 22 ft.-lbs.

Pressure Regulator coverScrews. . . • • . • 20 - 30 in.-Ibs.

Control Valve Body Screws*10-24. . . . . . . •• • 20 - 30 in.-lbs.

Control Valve Body Caps crew(1/4-20) lower-to-upperValve Body. . . • • • • 4 - 6 ft.-lbs.

Control Valve ROdy-to-CaseBolts . . . . . • • • • 8 - 10 ft.-lbs.

In all cases where erratic or malfunctioningof the transmission operation is encountered,make certain that these screws had been properlytightened.

INSTALLATION OF BATTERIESThe research division of the Willard Storage

Battery company has made a study of the effectof reverse installation of batteries in auto-mobiles. A side effect of reverse installationhas come to light in this study which indicatesthat many dealers fail to cheCk polarity before

. making an installation. Reverse polarity isalways damaging to the electrical units to somedegree but with the ia-ve n system the effect isgreatly increased. It is especially damagingto the voltage regulator, generator and radio.These parts are much more sensitive to reverse

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polarity in the 12-volt system than in a 6-voltsystem.

As you know. Studebaker cars and trucksprior to 1956 and Packard and Packard Clippermodels prior to 1955 had the positive ground,6-volt system. But since the change to the12-volt system, a negative ground is used.Therefore, in view of the fact that the changeis rather recent and that both systems areprobably encountered daily, greater care shOUldbe taken to be certain that proper Installat~onis made.

SUPERCHARGER DRIVE BELT POSITION- STUDEBAKER 57H-K andPACKARD-CLIPPER 57L MODELSPlease record this article on the Service

Bunetin Reference page Of your 1957 Studebakerand 1957 Packard CLipper Supplements.

you may be confronted with a condition ofthe supercharger drive belt not moving com-pletely to the bottom of the pulley when theengine is stopped or running at idle. Thisdoes not necessarily mean that the superchargeris not functioning properly.

Allowable tolerances in manufacture of thebelt tensioning arm spring and the air pistonmake possible a combination where the airpiston spring tension overcomes the belttensioning arm spring just enough to keep thebelt from going to the bottom of the pulley.

If testing of the supercharger fulfils therequirements outlined in Items 2, 3, and 4·under Testing in your 1957 Supplement and therequired pressure is obtained, the conditionshou ld be accepted as normal.

ObviouslY,if the tests indicate it respondssluggishly or not at all, check the causeslisted in the Supercharger Diagnosis sectionand correct as necessary.

BELT ADJUSTMENT - 57L-Y MODELSWITH AIR CONDITIONING andPOWER STEERINGPlease record this articLe on the Service

BuLLetin Reference page Of your 1957 PackardClipper SupPlement.

The following torque specifications should

April S E R V ICEbe used when adjusting the compressor drivebelt or the generator and power steering pumpassembly drive belt on the 57L-Y models:

Compressor Drive Belt - 18 ft."lbs.

Gen. and Power steering Pump Assembly-DriveBelt - 12 ft.-lbs.

The torque readings are taken by using atorque wrench, on the pulley retaining nut ofthe generator and the pulley retaining capscrew of the compressor. The pulley will slipbut with a heavy drag when belt tension i~ ad-justed to the above specifications.

If after correct adjustment the generatorand pump assembly drive belt has a tendency toslip or squeals on extreme right or left turns,there may be more than a normal high pressureon the power steering hydraulic system causingan overload. Check the hose for kinks and forrestriction in the pump, hoses or power steeringuni t.

TIME ALLOWANCE CHANGES - 1957PACKARD CLIPPER TIME GUIDEPlease enter these changes in their respective

groups of your 1957 Packard Clipper Time Guide.

operation N60 - crankshaft Rear searing OilSeal, install new - Thetime allowance should be3.1 hours instead of 2.5hours.

operation Nll0 - Engine Short Block, installnew; For Power Brakes add•5 Hours.

operation N225 - piston Rings, install newset - Time allowance shouldbe 13.3 hours in s t ea d of12.8 hours.

operation RIOO - Radiator core, R & R or in-stall new, Time allowanceshould be 1.9 hours insteadof .5 hours.

RADIO IGNITION NOISE PICKUP -1957 PACKARD CLIPPER MODELSWhen tuned to a powerful radio station in

the immediate area, a light ignition or staticnoise is sometimes audible with the enginerunning at idle but stops when the ignitionswitch is turned to the acce~sory side of theswitch, The noise corresponds with the firingfrequency and varies with the engine speed.

BULLETI" Ito. 323

The following checks and wire changes shouldbe made to eliminate the noise caused byigni tion:

1. Check for correct and COMplete installationof suppressors.

2. Spark plug cables must be pressed tightlyinto the distributor cap and coil.

3. Move the main 12-volt chaSSis cable frombelow the firewall cowl flange and placeabove or on the cowl flange.

4. Install the distributor-to-coil primarywire around the spark plug cables and notthrough them.

5. Move tbe wire to the supercharger throttleswitch away from the high tension cables.It may be brought up over the small crossbar for the hood hinges.

6. Move the wire to the antenna switch fromover the top of the glove box and route itbelow the glove box. - The wire may be tapedto the box.

7. If the instrument voltage regUlator does nothave Part NO. 1540361 condenser connected toit, install one.

8. Be sure ignition cables and component partsare clean. Clean any fouled spark plugs.

9. If necessary to do so, check the operationof the regulator. The type of "sp1tting-sputtering" noise, often caused by a voltageregulator, does not change with the enginespeed •

10. Antenna must have a good ground at thefender.

RADIO ANTENNA - 1957PACKARD CLIPPERPLease record this articLe on the Service

Bu~Letin Reference page Of your 1957 PackardC~ipPer SuPPLement.

The Dual Rear Electric Antenna, part No.PA-475l60 is available for field installation.The electric antenna may be installed only inthe Packard Clipper 4-door sedan models. Tomake an original installation, Rear AntennaAdapter Kit, Part NO. PA-484647 must be in-cluded.

The Daul Manual Control Antenna Kit, PartNO. PA-484651. is available for t.ne 1957 packardClipper Station wagon.

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ENJOY YOUR RIDE - DRIVE SAFELY in a SAFETY-CHECKED CAR .•..• CAN YOU SEE, STEER, STOP SAFELY••••• CHECK YOUR CAR - CHECK ACCIDENTS ••••• areslogans you will hear and see many times during

~he month of May to promote the annual MayNational Vehicle safety-check program.

This annual satety-check program is onceagain sponsored by the automotive and alliedindustries under the direction ot the Inter-Industry satety committee in the 34 stateswhere periodic checks are not required by law.

The objective of this program is to make themotoring public aware of the need to havevehicles checked periodically and to maintainthem in safe operating condition. It providesa check on brakes, lights, steering, tires, ex-haust system, glass, windshield wIpers, mirrorsand horns--all items aftecting safe vehicleoperation.

Although many tactors cause accidents, oneof these factors, the condition of the car ortruck is singled out tor special emphasis duringthe month ot May because it is one fact~r thevehicle owner and the vehicle serviceman canreadily recognize and correct. ot the nearly

Your help in the 1957

No.fioroL

SUPPORT THE

eckPROGRAM

2.200.000 cars and trucks voluntarily checkedduring the 1956 campaign. one out of every tivevehicles was in need of service in one or moreparts.

Of course. the success or this program dependson acceptance an~ the participation of theindiVidual vehicle owner. But, to get hisparticipation. it must have your active support.Therefore. we urge every dealer to become apart of this campaign. your participation inthis program gives you not only an opportunityt~ render a public service but. at the sametime, benefit trom the increased goodwill andthe service. parts. and accessories sales whichit creates.

Take advantage o r the nationwide advertising.the display and promotiodal material availableto you. The parts and Accessories Divisionletter ot March 12. 1957 outlined for you indetail the Safety-Check Promotional Kit andother materials available. If you have mis-placed your order blank, simply write ModernDisplays Inc., 13271 Mt. Elliott. Detroit 12.Michigan. enClosing your remittance tor $16.75.Do it now--get Into this program and have theca rs .and tr uck s 0 f you r a rea sa re t y -che eked inyour dea Le rsh Ip ,

VEHICLE SAFETY-CHECK Di{JYlis vitally needed!

THE STUDEBAKER-PACKARD CORPORATION PRINTED IN U.S.A.