VALVE GROUP (relay) 2G5020 - Caterpillar

Installation 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 4C-9507 Retaining Compound 1
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 1 g01043165
Install new O-ring seals (2) and O-ring seal (3) on electronic unit injector sleeve (1).
Apply Tooling (C) to the contact surface of electronic unit injector sleeve (1) on the surface that is Marked "X". Note: Do not apply Tooling (C) to the cylinder head surfaces. Apply Tooling (C) on the electronic unit injector sleeve only.
Lubricate O-ring seals (2) with clean engine oil.
Illustration 2 g01099549
Install electronic unit injector sleeve (1) on Tooling (A). Position 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 (A) and a hammer to install the electronic unit injector sleeve in the cylinder head.
Ensure that the electronic unit injector sleeve is properly seated in the cylinder head. The Tooling will "RING" when the electronic unit injector sleeve is fully seated in the bore of the cylinder head.
Remove Tooling (A). Remove excess Tooling (C).
Fill the cooling system with coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change". End By:
Install the electronic unit injectors. Refer to Disassembly and Assembly, "Electronic Unit Injector - Install".