ADAPTER 6K7850 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     9U-6891     Injector Tool Group     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 Group Start By:
Remove the electronic unit injectors.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Drain the coolant from the cooling system into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedures.
Illustration 1 g01260353
Illustration 2 g01260345
Install Tooling (A) in electronic unit injector sleeve (1) .
Tighten the nut on Tooling (A) until the electronic unit injector sleeve is pulled free of the cylinder head.
Illustration 3 g01260357
Remove O-ring seals (2) and O-ring seal (3) from electronic unit injector sleeve (1) .Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Use Tooling (B) to clean the bore in the cylinder head for the electronic unit injector sleeve.
Ensure that the electronic unit injector sleeve and the cylinder head bore are completely free of oil, dirt, and sealant debris.
Illustration 4 g01260364
Install new O-ring seals (2) and O-ring seal (3) on electronic unit injector sleeve (1) .Note: Do not apply Tooling (E) to the cylinder head surfaces. Apply Tooling (E) on the electronic unit injector sleeve only.
Apply Tooling (E) to the contact surface of electronic unit injector sleeve (1) on the surface that is Marked "X".
Lubricate O-ring seals (2) with clean engine oil.
Illustration 5 g01260372
Install Tooling (C) into the threads of electronic unit injector sleeve (1) .
Position Tooling (C) and the electronic unit injector sleeve in the cylinder head. Use care not to damage the O-ring seals on the electronic unit injector sleeve.
Use Tooling (D) and a hammer to install electronic unit injector sleeve (1) in the cylinder head.