Glow Plug: Service and Repair

GLOW PLUG SERVICE

Glow Plug Tip Removal (Damaged or Broken)

1. Remove fuel injector from necessary cylinder.
2. Using torsional damper bolt (Figure 3-47),rotate crankshaft to bring affected piston to TDC position.
3. Using pliers, reach through injector nozzle port (Figure 3-48), break off expanded tip, and remove from prechamber.
4. Remove glow plug.

Figure 3-47: Torsional Damper Bolt Location:

5. Direct stream of low-pressure compressed air into glow plug port. This will expel any remaining pieces of broken tip through injector port.

NOTE: If the preceding methods fail to remove glow plug tip remains from the prechamber, the cylinder head must be removed to clear the broken pieces.

6. Install new glow plug.
7. Install fuel injector.

Figure 3-48: Glow Plug and Injector Port Locations:

Glow Plug Replacement

Removal
1. Disconnect wire from glow plug with tool J 39083.
2. Remove glow plug from cylinder head (Figure 3-49).

Figure 3-49: Glow Plug Removal/Installation:

Installation
1. Install glow plug in cylinder head. Tighten plug to 8-12 lb-ft (11-16 N.m) torque.
2. Connect wire to glow plug.