Drain diesel engine oil by opening drain valve (1), and drain it into suitable container.
Lift out the dipstick (2) from the engine crank case (3).
Fill the engine crankcase (3) to the top of the narrow section on the dipstick (2) to the "H" mark.
Install the dipstick (2) into the engine crank case (3).
Check all components parts on diesel engine for leaks. Repair or replace as necessary.
Inspect diesel engine for damaged threads, cracks, distortion or wear.
Removal. (Refer to Figure 4-30).
Drain engine oil before removing engine. For procedure, see (1) Service, above.
Disconnect negative battery cable from the battery post (para. 4-26).
Turn off air valves on both ends of air-receiver tank (para. 4-26). Open condensate removal valve handle
to "open" (para. 4-27).
Loosen clamp (4), and slide upon fuel line (5).
Disconnect fuel line (5) on suction side of fuel pump (6).
Remove oil temperature switch (7) from diesel engine (3).
Remove nut (9) and disconnect electrical lead (8) from glow plug (10).
Loosen clamp (11) and remove hose (12) from air filter housing (13).
Remove bolt (14), lockwasher (15), and two ground wires (16) from diesel engine (3). Disconnect 24v
battery cable from starter solenoid.
Remove wires #20, 23, and 26.
Remove four nuts (17), washers (18), and bolts (19) from air-receiver tank mount (20).
Figure 4-30. Diesel Engine (Sheet 1 of 2)