GASKET 3879791 - Caterpillar

Removal Procedure
The ignition system may cause an electrical shock hazard, which may cause personal injury or death. Avoid contacting the ignition system components and the ignition system wiring during operation.
If the engine is running or the keyswitch is in the ON position, the ignition coil for the ARD spark plug will continue to fire. Turn the keyswitch to the OFF position before servicing the ignition coil for the ARD spark plug.
Turn the battery disconnect switch to the OFF position.
Illustration 1 g02155833
Typical example
Illustration 2 g02155834
Typical example
Cut required cable straps (5) in order to remove harness assemblies. Note: Note position of cable straps.
Slide the locking tab for harness assembly (4) into the unlocked position.
Disconnect harness assembly (4) for ignition coil (2) from the harness assembly for the clean emission module.
Disconnect ignition wire (6) from ignition coil (2).
If necessary, remove bolt (1) in order to remove ground strap (4) from ignition coil (2).
If necessary, remove the tube assembly for the pressure sensor for the Diesel Particulate Filter (DPF).
Remove bolts (1) and spacers from ignition coil (2). Remove ignition coil (2) from the bracket for the clean emission module. Note: Note position of any brackets.
If necessary, follow Step 9.a through Step 9.e in order to remove ignition wire (6) from clean emission module.
Cut remaining cable straps (5) and cable straps (8) from harness assembly (6). Note: Note position of cable straps. Ensure that all cable straps are removed from the harness assemblies.
If necessary, remove the nut and washer. Disconnect the ground strap for ignition wire (6) from the bracket for the clean emission module.
Remove bolt (9) for ground strap (4) from the combustion head.
Disconnect ignition wire (6) from spark plug (7).
Make temporary marks on the ignition wire assembly for installation purposes. Remove ignition wire (6) assembly from the clean emission module. Installation Procedure
Ensure that all components are clean and free from wear and damage. If necessary, replace any components that are worn or damaged.
Illustration 3 g02155834
Typical example
Illustration 4 g02155833
Typical example
If necessary, follow Step 2.a through Step 2.e in order to install ignition wire (6) onto clean emission module.
Position ignition wire assembly onto the clean emission module. Ensure that the ignition wire assembly is orientated correctly.
Install ignition wire (6) onto spark plug (7).
Position ground strap (4) onto combustion head and install bolt (9).
Tighten bolt (9) to a torque of 12 N m (106 lb in). Note: Ensure that the ground