Remove & Install Fuel Injection Lines
Fluid Spillage Containment
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to “Tools And Shop Products Guide”, NENG2500 for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates.
NOTE: Thoroughly clean the area around each fuel line connection before any fuel lines are removed.
1. Remove the left side valve cover.
2. Loosen four hose clamps (1).
3. Remove two hoses (3).
4. Disconnect fuel vapor line (2). Cap and plug all openings immediately.
5. Remove bolt and washer (5).
6. Disconnect two fuel injection lines (6) at the cylinder head.
7. Disconnect the same two fuel injection lines (6) at fuel injection pump housing (4). Upon installation, tighten the fuel injection lines nuts to a torque of 41 ± 7 N·m (30 ± 5 lb ft).
8. Remove two fuel injection lines (6). Install protective caps and plugs on all the fuel openings to keep dirt out of the fuel system.
9. Remove bolts (7), (8) and (9) holding fuel injection lines (10) in place in the brackets.
10. Disconnect two fuel injection lines (10) at the cylinder head.
11. Disconnect two fuel injection lines (10) at the fuel injection pump housing.
12. Remove two fuel injection lines (10). Upon installation, tighten the fuel injection lines nuts to a torque of 41 ± 7 N·m (30 ± 5 lb ft).
13. Disconnect four fuel injection lines (11) at the cylinder head.
14. Disconnect four fuel injection lines (11) at the fuel injection pump housing.
15. Remove four fuel injection lines (11). Upon installation, tighten the fuel injection lines nuts to a torque of 41 ± 7 N·m (30 ± 5 lb ft).
16. Install protective caps and plugs on all the fuel openings to keep dirt out of the fuel system.
NOTE: For installation of the fuel injection lines, reverse the removal steps.