PIN AS 3889436 - Caterpillar

Start By:
Remove the unit injector hydraulic pump. Refer to Disassembly and Assembly, "Unit Injector Hydraulic Pump - Remove".
Remove the injection actuation pressure control valve. Refer to Disassembly and Assembly, "Injection Actuation Pressure Control Valve - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component.
Illustration 1 g01094410
Remove pressure compensator valve (1).
Remove manifold (2).
Remove bolts (4) from valve block (3).
Illustration 2 g01094416
Remove valve block (3), control piston (6), and gasket (5).
Illustration 3 g01094422
Remove rotating group (7). Minor twisting of the rotating group may be necessary in order to remove the rotating group.
Illustration 4 g01094430
Install Tooling (A) in the pump group. Use a suitable press in order to remove shaft (8) from the front bearing.
Illustration 5 g01094431
Remove bolts (9). Remove covers (10).
Illustration 6 g01094441
Remove O-ring seal (12) from pintle bearing (14) that is opposite of spring seat (11). Install Tooling (B) into the pintle bearing finger tight.
Remove plug (13), if necessary.
Tighten Tooling (B) into the pintle bearing until the pintle bearing is removed.
Illustration 7 g01094444
In order to remove the pintle bearing from the other side of the pump group, you need to hold yoke (15) firmly. Use Tooling (B) to remove the pintle bearing.
Remove yoke (15).
Illustration 8 g01094447
Personal injury can result from parts and/or covers under spring pressure.Spring force will be released when covers are removed.Be prepared to hold spring loaded covers as the bolts are loosened.
Remove spring seat (11) and the spring.
Illustration 9 g01094449
Use Tooling (D) to remove retaining ring (17). Remove bearing (16).
Illustration 10 g01094450
Use Tooling (D) to remove retaining ring (19). Remove shaft seal (18).
Illustration 11 g01094452
Use Tooling (C) and a suitable press in order to remove bearing (20).
Illustration 12 g01094458
Remove plugs (21) and plug (22) from valve block (3).