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Page Title:
Table 4-1. Organizational Preventive Maintenance Checks and Services |
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 TM 10-3930-633-12
M = Monthly
Q= Quarterly
Interval and
Item to be Inspected
Work
Sequence No.
Procedure
(M/H)
HOOD AND PANELS
1
1.0
Check hood and panels for physical damage: dents, corrosion, cracks or tears in
sheet metal, etc. Refer to Section VIII for repair.
Check opening and closing of hood. Align hood at hinges if required and lubricate
hinges and latch mechanism as required.
0.4
LIGHTS
2
1
Check all lights for cracked or broken lenses and burned-out condition. Refer to
Section IX for replacement of bulbs or lenses, Also check for secure mounting and
condition of wiring.
FUEL PUMP
1.0
Perform fuel pump static pressure and volume test as outlined in Section X, if pump
performance is suspect.
Replace fuel filter element.
0.3
3
AIR CLEANER
0.2
2
4
Service the air cleaner element and empty the dust cup. Element may be cleaned by
compressed air or by washing. Refer to Section X for specific instructions.
0.2
5
Check air intake system of hoses and tubes to carburetor for loose connections or
damaged hose. Replace defective hose and tighten connections.
CARBURETOR
Perform idle speed and mixture adjustments as outlined in Section X.
0.3
3
6
0.5
Check carburetor for evidence of fuel leakage at gaskets and connections, and refer
7
to direct support maintenance for repair.
GOVERNOR
Check operation of governor as outlined in Section X. Adjust governor if engine
0.4
8
speed is outside the normal operating range as stamped on the governor case.
COOLING SYSTEM
4
0.5
Carefully inspect radiator hoses for leakage, deterioration and mushy feeling,
9
swelling around the clamps, etc. Replace all defective hose and clamps.
0.5
Check operation of thermostat while warming a cold engine. Replace thermostat if it
10
does not operate as specified in Section XII.
0.2
5
Check fan belt condition and adjustment. Replace worn belts and adjust to proper
11
tension as specified in Section XII.
1.0
Check water pump for leakage around pulley bearing or at gasket surface. Check
12
bearing wear by attempting to wobble the fan. If perceptible shake exists, replace
water pump.
1.5
Check radiator for visible signs of leakage in core. Pressure test radiator and cooling
13
system.
ELECTRICAL SYSTEM
6
0.2
Check alternator belt tension, and adjust to permit to inch deflection with 25
14
lb force applied at midpoint of belt.
15
0.5
Check alternator output in accordance with instructions in Section IX.
0.5
Test voltage regulator operation and adjust or replace as required.
16
0.5
Check operation of starter and solenoid switch. Replace defective parts.
17
DISTRIBUTOR
0.2
Check ignition timing and adjust distributor as required.
18
0.3
Check and adjust contact points.
19
0.5
Check centrifugal and vacuum advance mechanisms.
20
COIL
0.3
Check operation of ignition coil and check primary and secondary ignition wiring for
21
deterioration and current leakage.
SPARK PLUGS
0.4
Check condition of individual spark plugs. Clean, or replace plugs, and adjust to
22
proper gap.
BATTERY
0.3
Test battery to determine cell condition. Recharge or replace battery as required.
23
Change 1
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