TM 5-4310-350-14
Table 3-1. Operator/Crew Preventive Maintenance
Checks and Services
D--During Operation
A--After Operation
B--Before Operation
Time required: 0.5
Time required: 0.4
Interval
and
WORK
Sequence No.
ITEM TO BE INSPECTED
Time
(M/H)
PROCEDURE
B
D
A
NOTE
Visually inspect for evidence of lubricant leak concurrently with daily service.
checks.
INSPECT OIL LEVEL IN COMPRESSOR FRAME
1
The compressor has an oil level gage, mounted in the compressor crankcase (fig.
If the oil level is low, remove the oil fill plug (fig. 1-1) and fill with OE/HD
10W 30 lubricating oil, to the full mark on the oil sight gauge. Replace the fill
0.1
plug. For additional lubrication instructions refer to LO 5-4310-350-12.
2
SWITCHES AND CONTROLS
Check for loose wires on the electric motor and switches. Notify organizational
0.1
maintenance if any loose wires are found.
3
Inspect the drive belts for broken or worn belts. If any bad belts are found notify
0.1
Organizational Maintenance.
4
HOSES AND FITTINGS
Inspect the hoses for loose connections, breaks on hoses that are busted. Check
the fitting for damage or loose connections. Notify Organzational Maintenance if the
0.1
PRESSURE GAGE
5
Watch the pressure gage reading when the motor starts and stops. The motor
should start when the gage shows a reading of 140 psi (24.61 kgs per sq cm)
and stop at 175 psi (12.30 kgs per cm). Notify Organizational Maintenance if the
gage does not operate properly.
0.1
SAFETY RELIEF VALVE
6
Test the safety valve (fig. 1-2) mounted on top of the air receiver tank at the
motor end. This is a preset valve that is actuated when the air receiver tank
receives a pressure of 200 psi (14.06 kgs per sq cm). To test the valve manually,
pull up on the ring which is attached to lever on the safety valve until you hear
air escape. Notify Organizational Maintenance if the safety relief valve does not
0.1
operate properly.
7
CLEANLINESS OF EQUIPMENT
WARNING
Dry cleaning solvent, P-D-680, used to clean parts in potentially
dangerous to personnel and property. Avoid repeated and pro-
longed skin contact, Do not use near open flame or excessive
heat. Flash point of solvent is 100 F. -- 138 F. (38 C. --
59 C.).
NOTE
Always wipe oil and grease off first, in order that the power may be turned on
and the compressor air used to remove dust from the compressor.
3-4
