Usage:
D9R (7TL, 8BL),
D10R (3KR) Track-Type Tractors;
24H (7KK) Motor Graders;
73D (1GW) Underground Truck;
631E (1AB),
633E (2PS),
637E (1FB),
651E (4YR),
657E (5YR, 6PR, 6TR, 7KR) Wheel-Tractor Scrapers;
769D (5TR),
771D (6JR),
773D (7ER),
775D (6KR) Off-Highway Trucks;
834B (7BR) Wheel Tractors;
836 (7FR) Compactors;
988F (2ZR),
990 (4FR) Wheel Loaders;
PM-565 (3TK) Cold Planers
Reference: Special Instruction, REHS0192-03, "Disassembly And Assembly Of The 144-0835 Unit Injector Hydraulic Pump Group". Video, LEVN4245, "Disassembly And Assembly Of The Unit Injector Hydraulic Pump Group For 3408E And 3412E".
These machines are powered by 3408E (99C) or 3412E (80M) Engines which are equipped with Hydraulically Actuated Electronically Controlled Unit Injector fuel systems. After the unit injector hydraulic pump on one of these engines has been disassembled and assembled for servicing, the pump should be primed before attempting to start the engine.
Location to prime 144-0835 Unit Injector Hydraulic Pump.
To prime the 144-0835 Unit Injector Hydraulic Pump Group add one quart of engine oil to the reservoir of the pump through inlet (1). This adds the necessary amount of oil to the unit injector hydraulic pump so that the hydraulic pump will not be damaged and the engine will start without excessive cranking or wear.