106661-5442 ZEXEL 9 400 616 624 BOSCH INJECTION-PUMP ASSEMBLY 9400616624 1066615442 1671396807

Illustration 21 shows the direction the rack moves when the fuel injector is receiving fuel.
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Illustration 1 - Flowchart for the Air in Fuel Test (Test F)
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Illustration 2 - Flowchart for the Air in Fuel Test (Test F)Fuel Injector Cranking Test (Test G)
Note: The fuel injector cranking test checks for worn out injectors by measuring the cranking rack.
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(3) The rack control (4) The number one fuel injectorNote: Refer to Illustration 24 for the location of the rack control and the location of the number one injector.
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Flowchart for the Fuel Injector Cranking Test (Test G)Fuel Shutoff Solenoid Test (Test H)
Note: The fuel shutoff solenoid test determines if the fuel shutoff solenoid and wiring harness are operating properly.
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Flowchart for the Fuel Shutoff Solenoid Test (Test H)Fuel Ratio Control (FRC) Setting Test (Test I)
Note: The FRC setting test checks the FRC setting.
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Flowchart for the Fuel Ratio Control (FRC) Setting Test (Test I)Governor Servo Retaining Ring Test (Test J)
Note: Do not run the engine during this test.Note: The governor servo retaining ring test checks for faulty internal parts of the governor.
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(1) Paddle
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(2) Clevis pin
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Flowchart for the Governor Servo Retaining Ring Test (Test J)Fuel Transfer Pump Test (Test K)
Note: The fuel transfer pump test is a visual inspection of the fuel transfer pump components.
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(1) Screen (2) Inlet check valve (3) Spring (4) Bolt (5) Piston (6) Outlet check valve (7) Freeze plug (8) Piston check valve (9) Passage (10) Tappet Assembly (11) CamNote: Refer to Illustration 31 for the location of the components for the fuel transfer pump.
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Flowchart for the Fuel Transfer Pump Test (Test K)Fuel Ratio Control (FRC) Diaphragm Leak Test (Test L)
Note: The FRC diaphragm leak test checks for a leaking FRC diaphragm.
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Flowchart for the Fuel Ratio Control (FRC) Diaphragm Leak Test (Test L)