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 TM 5-1940-277-20
TM 1940-20/2
Table 2-1. Unit Preventive Maintenance Checks and Services (cont)
W-Weekly
Q-Quarterly
S-Semiannually
Item to be inspected
Interval
Procedure: Check for and have repaired, filed,
Item
or adjusted as needed
No.
S Item
Perform all operator PMCS first
WQ
8
c.
Fuel injection pump (6). Check that engine idle is adjusted to between 650
and 750 rpm. check for proper adjustment of throttle and stop cables. Check
(Cont)
for fuel and oil leaks and for loose or missing hardware.
d.
Engine motor mounts (3). Check that engine mounting bracket bolts are tight
and not missing. Torque the eight nuts on motor mounts to 32.55 lb-ft
(447 Nm).
e.
Transmissions (7). Check for oil leaks. Check for proper adjustment of shift
cable and for loose or missing hardware.
8
9
12
11
5
13
10
5
MK1 OR MK2 WITH SABRE ENGINE
MK2 WITH CUMMINS ENGINE
f.
Engine belts.
CAUTION
Loose V-belts can overhear or slip off the drive pulley,
causing premature belt or engine failure.
Overtightened V-belts may cause premature belt or
bearing failure.
NOTE
Perform step (1) and (2) for MK1 or MK2 with Sabre
Engine. Perform step (3) for MK2 with Cummins
Engine.
(1) V-belt (10) adjustment. Check adjustment by applying moderate hand
pressure at center of V-belt between water pump pulley (11) and alternator
pulley (5). Obtain a deflection of between 1/4 and 1/8 inch (6.4 and 3.2 mm).
To decrease tension, unlock T-handle adjuster lock (8) and turn T-handle
adjuster (9) clockwise. To increase tension, turn T-handle adjuster
counterclockwise. Ensure alternator mounting bolts are tight.
(2) V-belt (10) check. Check if belts are worn, burnt, cracked, broken, or missing.
(3) Inspect serpentine belt (13) for cracks, wear, or if loose, broken or missing.
Check belt tensioner (12) to ensure belt is tensioned properly. Replace
belt (13) or tensioner (12) as necessary.
Change 2
2-11
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