Injection Nozzles - GMC G Service Manual

Install or Connect
E
1. Gasket.
2. Injection pump.
3. Nuts (finger-tight).
4. One 8 mm bolt to attach the gear to the pump hub.
Tighten
Bolt to 25 N*m (20 ft. lbs.).
Injection pump nuts to 42 N*m (31 ft. lbs.).
— Align the timing mark on the injection
pump flange with the mark on the front
cover.
Nozzles used in G-Models are shorter than nozzles used
on R/V and P-Models. Attempts to use the incorrect nozzle
will damage the cylinder heads. When replacing nozzles,
refer to the part number stamped on the side of the nozzle
(figure 13).
Figure 12 — Marking TDC on the Front Housing

INJECTION NOZZLES

DIESEL FUEL INJECTION 6C2-9
5. Remaining pump gear attaching bolts.
• Rotate the engine to gain access to the bolts.
Tighten
Bolts to 23 N*m (17 ft. lbs.).
"
A. Fuel Return
B. Remove Here
Figure 13 — Injection Nozzle
L00723
e b t
B-08137