1-3-1. Internal View of Bosch APF 1CQ Fuel Pump

1-3-2. Port and Helix Metering

1-3-3. Full Section Differential, Inward Opening Nozzle

1-3-4. Pintle and Hole, Closed-Type Nozzles

1-3-5. Nozzle Valve Reaction Area

1-4-2. Helix Control Showing Plunger Positions (Cutaway View)

1-4-3. Phases of Injector Operation Through Vertical Travel of Plunger (Constant Beginning-Variable Ending)

1-4-4. Internal View of Sleeve Metering Distributor Hydraulic Head

1-4-5. Basic PT Pump (Cummins)

1-4-6. Cummins PTD Injector

1-4-7. Diagram of DPA Inlet Metering Pump

1-4-8. Cross Section of AKF Holder and ADB Nozzle

2-1-1. Typical Spray Patterns for Multi-Hole and

Pintle Nozzles

2-2-1. Internal View of United Technologies APF 1CQ Fuel Pump

2-2-2. Plunger Helixes

2-3-3. Main Governor Linkage

3-1-1. Mounting the Unit Injector in the Cylinder Head

3-1-2. Typical Unit Injector

3-1-3. High Valve Injector Assembly

3-1-4. Spherical Valve Injector Assembly

3-1-5. Injector Identification Chart (Unit Injectors for 71 Series General Motors Diesel Engines)

3-3-1. Mounting the Unit Injector in the Cylinder Head

3-3-3. Typical Unit Injector

3-4-1. Diesel Nozzle Valve Lift Gage

3-4-2. Nozzle Valve Lift

Figure 3-5-1. Hartridge Nozzle Multiclean Unit and Adaptors

4-1-1. Diagram of a DPA Pump

4-1-2. CAV Transfer Pump Adjusting Devices

4-1-3. Cross Section of the End Plate Showing Components

4-1-4. Advance Mechanism Showing Cam Advance Stud

4-2-1. Return Oil Circuit

4-2-2. Cam Ring Ramps

4-2-3. Control Mechanism of DPA Mechanical Governor

4-2-4. Installing Upper Adjusting Plate

4-2-5. Top Plate Alignment with Scribe Mark on Rotor

4-2-6. Installation of Drive Plate

4-2-7. Setting Roller-to-Roller Dimension with Tool No.

7044/262

4-2-8. Tightening Rotor Nut

4-2-9. Setting DPA Governor Linkage

4-2-10. Application of the Setting Code

5-1-1. Flyweight Governor Diagram

5-1-2. Simple Mechanical Governor

5-1-3. Simple Hydraulic Governor

5-1-4. Hydraulic Governor with Compensating Device