PLUNGER 6E1478 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A(1) 128-7889 Bridge Puller 1
221-9778 Puller Stud 1
9U-6877 Thrust Bearing 1
5P-8247 Hard Washer 1
4K-0367 Nut 1
B 9U-6862 Tapered Brush 1
9U-6863 Small Bore Brush 1
9U-7244 End Brush 1
9U-7237 Brush Extension 1
4C-5552 Large Bore Brush 1
C(1) 221-9778 Puller Stud 1
D(1) 9U-7258 Driver Cap 1
E 4C-9507 Retaining Compound -
(1) Part of the 9U-6891 Injector Tool GroupStart By:
Remove the electronic unit injectors.
Drain the coolant from the cooling system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".
Illustration 1 g01002969
Use Tooling (A) to remove unit injector sleeve (1).
Illustration 2 g00948616
Remove O-ring seals (2) from unit injector sleeve (1). Installation Procedure
Use Tooling (B) to clean the bore in the cylinder head for the unit injector sleeve.
Before starting installation ensure that the unit injector sleeve and the cylinder head bore for the unit injector sleeve are completely free of oil, dirt, and sealant debris.
Illustration 3 g01003258
Install new O-ring seals (2) on unit injector sleeve (1). Note: Do not apply Tooling (E) to the cylinder head surfaces. Apply Tooling (E) on the unit injector sleeve only.
Apply Tooling (E) to the contact surface at Mark (X).
Lubricate O-ring seals (2) with clean engine oil.
Install Tooling (C) into the threads of unit injector sleeve (1).
Position Tooling (C) and unit injector sleeve (1) in the cylinder head. Use care not to damage the O-ring seals on the unit injector sleeve.
Ensure that the unit injector sleeve is properly seated in the cylinder head. The tool and the unit injector sleeve will "RING" when the unit injector sleeve is fully seated in the bore in the cylinder head.
Illustration 4 g01027804
Use Tooling (D) and a hammer to install the unit injector sleeve.
Use a clean towel to remove any excessive retaining compound.
Fill the cooling system with coolant. Refer to Operation and Maintenance, "Refill Capacities" for the cooling system capacity. End By:
Install the electronic unit injectors.