TM 5-3810-300-24&P-3
15.1 Preventive Maintenance
22. Engine (Steam Clean)
28. Generator (Battery-Charging)
Steam clean the engine and engine compartment.
If the battery-charging generator is equipped with hinge
cap oilers, add a few drops of medium grade SAE 20
engine oil to each oiler during the vehicle lubrication
CAUTION: Do not apply steam or
period. Generators having a built-in supply of grease or
solvent directly on the battery-charging
sealed bearings require no additional lubrication except
generator, starting motor or electrical
during engine or unit overhaul.
components as damage to electrical
equipment may result.
29. Engine and Transmission Mounts
23. Radiator
Check the engine and transmission mounting bolts and
the condition of the mounting pads. Tighten and repair
Inspect the exterior of the radiator core and steam clean
as necessary.
it, if necessary.
30. Crankcase Pressure
NOTE: Never use fuel oil, kerosene or
petroleum base solvents for cleaning
Check and record the crankcase pressure as outlined in
since they may leave an oil film on the
Section 15.2.
radiator fins.
31. Fan Hub
24. Shutter Operation
At major overhaul, the bearing in the fan hub assembly
Check the operation of the shutters and clean the linkage
should be discarded. Install a new bearing and pack the
and controls.
hub assembly and bearing with Texaco Premium RB
grease or an equivalent performance grease.
25. Oil Pressure
32. Throttle Delay
Under normal operation, oil pressure is noted each time
the engine is started. In the event the engine is
Inspect and adjust, if necessary.
equipped with warning lights rather than pressure
indicators, the pressure should be checked and recorded
The throttle delay system limits the amount of fuel
at the interval indicated.
injected during acceleration by limiting the rate of injector
rack movement with a hydraulic cylinder. The initial
26. Governor
location of this cylinder must be set with the proper gage
to achieve the appropriate time delay (Section 14.14).
Check and record the engine idle speed and no-load
speed. Adjust as necessary.
Inspect the check valve by filling the throttle delay
cylinder with diesel fuel and watching for valve leakage
An idle speed lower than recommended will cause the
while moving the throttle from the idle to the full-fuel
engine to be accelerated from a speed lower than the
position.
speed at which the engine was certified.
33. Cooling System
A no-load speed higher than recommended will result in
a full-load speed higher than rated and higher than the
Drain and flush the cooling system. If necessary, use a
speed at which the engine was certified.
cooling system cleaner and reverse flush. Refill the
cooling system (refer to Engine Coolant in Section
27. Fuel Injectors
13.3). Start the engine and check for leaks.
Check the injector timing and exhaust valve clearance as
34. Thermostats and Seals
outlined in Section 14.2 and 14.1 every 50,000 miles.
The proper height adjustment between the injector
Check the thermostats and seals (preferably at the time
follower and injector body is of primary importance to
the cooling system is prepared for winter operation).
emission control.
Replace the seals if necessary.
Page 424
