GUARD AS-YM 4194729 - Caterpillar

Installation Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     6V-4979     Carbon Seal Installation Tool     1    
B     8S-2245     Injector Cleaning Tool     1    
C     6V-4089     Reamer     1    
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00448903
Put carbon dam seal (1) on the small end of Tool (A). Expand carbon dam seal (1) by sliding carbon dam seal (1) to the large end of Tool (A). Put Tool (A) against the fuel injector nozzle. Slide carbon dam seal (1) from Tool (A) to the fuel injector nozzle. Slide carbon dam seal (1) into position in the groove of the fuel injector nozzle, as shown. Use Tool (A) in order to install carbon dam seal (1).
To clean the fuel injector nozzles, refer to Special Instruction, SEHS7292 for the use of Tool (B) .
Install a new compression seal (2) on the fuel injector nozzle.
Illustration 2 g00448904
Use Tool (C) in order to clean the bore in the cylinder head for the fuel injector nozzle. Use a wrench in order to turn Tool (C) .
Illustration 3 g00448905
Illustration 4 g00448906
Align notch (3) in fuel injector nozzle (5) to the tab in clamp (4) during installation.
Install fuel injector nozzle (5). Ensure that the notch in the injector is aligned with the tab in clamp (4) .End By: Install the fuel injection lines. Refer to Disassembly and Assembly, "Fuel Injection Lines - Remove and Install".