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TM 10-3930-627-12
Table 4-1. Preventive Maintenance Checks and Services
Organizational Maintenance Category
250 Hour Schedule
Sequence
Item to be inspected
Procedure
Paragraph
No.
references
1
Drive belt
Proper adjustment is full deflection midway between pulleys.
Replace a worn, cracked or frayed belt.
2
Spark plugs
Replace spark plugs that have cracked insulators or burned
electrodes. Clean and set spark plug gaps for 0.025 inch.
Torque spark plugs to 25 to 30 foot-pounds. Replace leads
that are frayed or broken. Clean and tighten lead
connections.
3
Distributor
Replace pitted or burned contact points. Proper gap adjustment
is 0.022 inch. (Check adjustment every 500 hours}.
4
Fire Extinguisher
Inspect for broken seal. The dry chemical type must be weighed
every 6 months. If the weight has decreased to less than that
specified on cylinder or the pressure is below 125 psi the
extinguisher must be replaced.
5
Tilt cylinder
Check for leaks and insecure mounting. Replace a defective
cylinder. Adjust as necessary.
6
Lights
Check for burned out lamps or defective leads. Replace
defective lamps or leads.
7
Lift chains
Inspect for cracked, broken or worn links. Replace a defective
chain. Adjust as necessary. Reference current L.O.
8
Lift cylinder
Inspect for leaks and insecure mounting. Refer discrepancies to
direct support.
9
Controls and Instruments  Inspect for damage and loose mounting. With unit operating,
check for proper operation.
10
Brake and Inching pedal  Check for strong pressure when brake pedal is applied. Proper
pedal free travel is 3/8 to 5/8 inch. Bleed brakes if necessary.
Inspect cylinder and lines for leaks. Add fluid as required.
11
Master cylinder
Reference current LO. Clean fill plug vent. Replace a
defective cylinder or leaking line.
Inspect operation. Adjust as necessary.
12
Handbrake
Add fuel as required. Tighten loose mounting. Replace leaking
13
Fuel tank
fuel tank. Replace defective cap gasket. Clean cap vent.
Clean fuel pump strainer screen. Install new gasket.
14
Fuel Strainer
Tighten loose cables and mountings. Remove corrosion. Fill to
15
Battery
3/8 inch above the plates. Clean venthole in filler cap before
installing. In freezing weather run engine minimum of 1 hour
after adding water. Replace a cracked or leaking battery.
Change oil and replace filter. Reference current LO.
16
Engine oil level gage
LO.
Proper coolant level is 1 inch below filler neck. Replace cracked
17
Radiator
or frayed hose. Replace defective radiator. Remove
obstructions in the air passages. Tighten all mounting and
leaking connections.
Lubricate in accordance with current LO.
Note. During operation observe for any unusual noise or
18
vibration.
4-2

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