PANEL AS-INSTRUMENT 3237443 - Caterpillar

Introduction
There have been isolated instances of issues with accelerated wear on the electronic unit injectors. This Special Instruction, "New Secondary Fuel Filter" will prevent the issue.Refer to Special Instruction, KENR6938, "High Leakoff of the Electronic Unit Injector" in order to determine the condition of the electronic unit injectors. After the Special Instruction, KENR6938, "High Leakoff of the Electronic Unit Injector" has been completed, carry out this Special Instruction, "New Secondary Fuel Filter".Required Parts
Table 1
Required Parts    
Part Number     Description     Qty    
313-7111     Fuel Filter As     1    
309-0860     Fuel Filter As     1    
278-4138     Fuel System Protection Gp     1    
215-9515     Hose Connector     4    
215-9513     Hose Connector     4    
1P-4278     Hose Clamp     4    
-     Flexible Fuel Hose SAE J30R9 with ID 8 mm (0.3150 inch)     -    Removal Procedure
Ensure that all adjustments and repairs that are carried out to the fuel system are performed by authorized personnel that have the correct training. Before beginning ANY work on the fuel system, refer to Operation and Maintenance Manual, General Hazard Information and High Pressure Fuel Lines for safety information. Refer to System Operation, Testing and Adjusting, Cleanliness of Fuel System Components for detailed information on the standards of cleanliness that must be observed during ALL work on the fuel system.
Illustration 1 g01622717
Typical example
Remove tube assemblies (1), (2) and (3). Remove setscrews (5). Retain setscrews (5) .
Remove the old secondary fuel filter canister (7). Refer to Operation and Maintenance Manual, "Fuel System Secondary Filter - Replace" for the correct procedure.
Remove the existing secondary fuel filter base (6). Refer to Disassembly and Assembly, "Fuel Filter Base - Remove and Install (Secondary Fuel Filter)" for the correct procedure.Installation Procedure
Ensure that all adjustments and repairs that are carried out to the fuel system are performed by authorized personnel that have the correct training. Before beginning ANY work on the fuel system, refer to Operation and Maintenance Manual, General Hazard Information and High Pressure Fuel Lines for safety information. Refer to System Operation, Testing and Adjusting, Cleanliness of Fuel System Components for detailed information on the standards of cleanliness that must be observed during ALL work on the fuel system.
Illustration 2 g01622723
Typical example
Remove the paint around the paint shadow left by the original secondary fuel filter base.
Install setscrews (4) to the new secondary fuel filter assembly base (5). Secure the secondary fuel filter base (5) to the engine. Tighten the setscrews (4) to a torque of 22 N m (16 lb ft).Note: Ensure that the new secondary fuel filter assembly base (5) has an identification mark (3). The identification mark (3) is on the top of the new secondary fuel filter assembly base (5). The identification mark (3) is a hole that has a depth of 3 mm (0.1181 inch).
Install tube assemblies (1) and (2) .
Install the tertiary fuel filter assembly (6) to the chassis of the machine.
Make a flexible fuel hose to a specification that complies with SAE