SEAT-VALVE 1799453 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 456-7992 Tool - Puller (Injector) 1
B 129-1966 Multipurpose Grease - Start By:
Remove the rocker arms and the rocker arm shaft.
Remove the fuel lines.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g06112909
Loosen nut (2) and remove harness assembly (1).
Illustration 2 g06112951
If the injector hold down bolt is loose during the removal procedure, inspect the injector bore for wear and debris. Replace the clamp and spacer.
Remove valve blocks (5). Note the location and orientation of the valve blocks for installation purposes.
Remove bolt (3) from clamp (4).
Place an identification mark on electronic unit injector (6) for installation purposes. Each electronic unit injector must be reinstalled in the original location in the cylinder head.
Illustration 3 g06112971
Use Tooling (A) to remove electronic unit injector (6) and clamp (4) from the cylinder head.
Illustration 4 g06112974
Remove washer (7) and O-ring seal (8) from electronic unit injector (6).Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Install electronic unit injector (6) in the reverse order of removal.Note: Install electronic unit injector (6) into the original location in the cylinder head.
Use Tooling (B) to hold washer (7) to the nozzle of electronic unit injector (6).
Lubricate O-ring seal (8) with Tooling (B).
Tighten bolt (3) to a torque of 35 2 N m (26 1.5 lb ft).