Do not touch tip of fuel injection nozzle as damage to equipment can oc-
Remove two hex head nuts (1) and retaining plate (2).
If the nozzle is tight, gently pry nozzle using a small pry bar. Be careful
not to pry on the fuel return hose hub.
Carefully remove fuel injection nozzle (3). Wrap it in clean cloth to protect the nozzle tip. Do not place
nozzle tip directly on any dirty surface without protection.
If nozzle gasket (4) and spacer (5) are not attached to nozzle at removal, screw M8 or M9 stud bolt
(more than 4 inches [100 mm] long) into nozzle gasket, then remove stud bolt. The gasket and spacer
should come out.
Figure 4-12. Fuel Injection Nozzle Gasket
Install new fuel injection nozzle gasket onto fuel injection nozzle before installing nozzle into cylinder
Make sure nozzle and sleeve surface is clean. Carbon deposits will build
upon nozzle in the form of flowers. Flowering lowers combustion perfor-
Carefully insert the fuel injection nozzle into the cylinder block. Care must be taken in order to avoid
damage to nozzle gasket.
Make sure fuel injection nozzle (3) positioning pin guides into positioning slot.
Secure nozzle (3) to engine with two hex head nuts (1) and retaining plate (2). Torque to 6.0-7.0 ft-lb
(80- 100 cm-kg).