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Page Title:
Table 4-1. Organizational Preventive Maintenance Checks and Services |
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 TM 5-4320-273-14
Table 4-1. Organizational Preventive Maintenance
Checks and Services
Q
Quarterly
Total man-hour
required; 10.0
Work
Item to be inspected
time
Sequence no.
procedure
(M/H)
1
LUBRICATING OIL
Check to ensure that the crankcase oil and the filter element have been changed at the required interval.
0.2
Check breather cap for cleanliness.
FUEL SYSTEM
2
Check for leaks and for contamination of the fuel. Replace defective parts and clean system.
0.2
AIR CLEANER
3
Check condition of air element.
0.5
Clean or replace element and replace any other damaged parts.
BATTERY
4
WARNING
Do not smoke or use an open flame in the vicinity when servicing
the battery. Batteries generate hydrogen gas, which is highly ex-
plosive.
Test the specific gravity of the electrolyte in the battery with a hydrometer. Replace battery if it fails to
0.3
take and maintain a charge.
EXHAUST SYSTEM
5
Check exhaust system for damage and leaks. Replace muffler or any other parts if damaged or if leaks are
0.2
noticed.
CRANKCASE, BLOCK, AND CYLINDER HEAD
6
Check for leaks and for cracks or other damage. Tighten or replace loose or missing hardware. Replace
0.4
defective cylinder head gasket.
FUEL STRAINER
7
Check for dirt or water in fuel bowl. Service fuel bowl. Replace strainer element if clogged.
0.5
FUEL PUMP
8
Check fuel pump for leaks or damage. Replace fuel pump if defective.
0.5
CONTROL PANEL
9
Inspect for inoperative or illegible gages, defective switches or damaged controls. Replace as required.
0.2
SUCTION STRAINER
10
Check condition of suction strainer. Clean if necessary. Replace damaged strainer and gasket.
0.4
SUCTION AND DISCHARGE PIPING
11
Check for leaks, cracks, or damage to piping parts and for missing dust plugs or. aps. Repair or replace as
0.2
necessary.
GATE VALVES
12
Check all gate valves by operating them. Repair or replace valves which leak,
difficult to operate or
0.2
are otherwise damaged.
GROUND ROD ASSEMBLY
13
Inspect the ground rod and wire assembly. Clean corrosion from clamps and other parts. Replace any
0.2
damaged parts.
ENGINE SHROUDING
14
Check for loose, missing or damaged engine shrouding. Repair or replace shrouding as necessary.
0.4
TIRES
15
Inspect tires for proper inflation and condition. Replace worn or damaged tires and damaged tubes as
0.4
necessary.
CARBURETOR
16
Make a visual inspection of carburetor. Check operation of throttle lever and choke lever. Adjust as
0.3
necessary. Replace a damaged carburetor.
GOVERNOR AND CONTROLS
17
Check governor operation and inspect for damage. Adjust the governor if full load speed is not between
0.2
2300 and 2350 rpm.
BATTERY CHARGING SYSTEM
18
Check ammeter with engine running. After the initial high charging rate when starting, rate should
0.2
slowly reduce to near zero. Notify direct support maintenance of faulty operation.
TACHOMETER-HOURMETER
19
Check for secure mounting, tight fittings, and for proper operation.
0.3
STARTING MOTOR
20
Check starting motor operation. Inspect brushes and replace if worn. Replace damaged starting motor.
0.5
SPARK PLUGS
21
Check for cleanliness and proper gap. Clean and regap if necessary. Replace defective plugs.
0.8
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