Quantcast Table 2-1. Preventive Maintenance Checks and Services (Cont)

 

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LEAKAGE DEFINITIONS
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TM-5-2420-224-20-1 Tractor Wheeled 4x4 DED Small Emplacement Excavator (SEE) and High Mobility Material Handler (HMMH) Manual
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AXLE
TM 5-2420-224-20-1
Table 2-1. Preventive Maintenance Checks and Services (Cont)
NOTE: Within designated interval, these checks are to be performed in the order listed.
INTERVAL DEFINITIONS
Q-Quarterly
S-Semiannually
A-Annually
Interval
Item
Item to be Inspected:
No.
Q
S
A
Procedure: Check for and have repaired, filled, or adjusted as needed.
AXLE
3
Check operation of differential Iock/four-wheel drive.
BRAKES
4
a. Test braking response to brake pedal. Vehicle should slow down
immediately.
b. At speed of approximately 20 mph, apply brake pedal with steady
force. Vehicle should stop smoothly without noticeable side-pull or chatter.
c.  With vehicle on downgrade and transmission in neutral, engage
parking brake. Vehicle should not move and indicator light should be on.
5
STEERING
Check vehicle response to steering wheel action. Vehicle should respond
instantly. With vehicle on straight level ground, lightly hold steering
wheel to check for pull or wander. With vehicle in motion, free play
should be no more than approximately 1-1/2 in. (39 mm) in either
direction.
ENGINE
6
a. Check engine operation at all speeds. Ensure engine does not exceed
governed speed (2850 50 rpm).
b. Observe engine instruments to detect malfunctions.
7
SUSPENSION
Observe how vehicle responds to road shocks. Shifts, knocks, or
constant bouncing indicate possible malfunction.
Change 1

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