TM 5-3895-370-14&P
Table 4-2. Unit Preventive Maintenance Checks and Services
Mo - Months
Hr - Hours
Item
Interval
Item to Be
No.
Mo
Hr
Inspected
Procedure
ENGINE
1
3
250
Engine Crank-
Inspect front and rear oil seals for leakage. Change the lube oil and
case and Oil
filter (para 4-24 and 4-31). Refer to Chapter 3, Section I for
Seals
Lubrication Instructions.
2
6
500
Fuel Filters
Change fuel filters (para 4-44). Bleed fuel system if required
(para 4-42).
3
12
1000
Valves
Inspect valve covers and seals for damage and leakage.
Adjust valve lash clearance (para 4-25):
Intake - 0.010 in. (0.254 mm)
Exhaust - 0.020 in. (0.508 mm)
4
6
500
Radiator
Check the anti-freeze concentration. Add enough anti-freeze to
Assembly
protect the engine to -24 degrees F (-31 degrees C) (para 3-8).
5
12
1000
Cooling System
Drain the cooling system (para 4-56). Check for damaged hoses and
loose or damaged hose clamps. Replace as required (para 4-57).
Check radiator for leaks, damage, and build-up of dirt. Clean and
repair as required (para 4-53). Flush the system until the water is
clean. Use a mixture of 50% water and 50% anti-freeze. System
capacity is 6 gal. (23 l).
6
12
1000
Drive Belt,
Check the belt deflection at the longest span of belt. Maximum
Tensioner
deflection is 3/8 to 1/2 in. (9.5 - 12.7 mm). Replace belt if required
Bearing, and
(para 4-61). Check the tensioner and fan hub bearings. Should spin
Fan Hub
freely with no rough spots, wobble, or end play. Replace tensioner
or fan hub if required (paras 4-62 and 4-60).
WARNING
If NBC exposure is suspected, all air filter media
should be handled by personnel wearing protective
equipment. Consult your unit NBC Officer or NBC
NCO
for
appropriate
handling
or
disposal
procedures.
7
3
250
Air Cleaner/
Remove and inspect outer and inner air cleaner elements
Intake System
(para 4-37). Tighten or replace parts as necessary to make sure air
intake system does not leak (i.e. cracked hoses, loose clamps,
punctures, etc.). Replace elements as necessary.
4-10