TM 9-2320-260-20
Table 2-1. Unit Level Preventive Maintenance Checks and Services (Contd).
NOT FULLY
ITEM TO
PROCEDURE
MISSION
INTERVAL
ITEM
CHECK/
NO.
CAPABLE IF:
SERVICE
Springs are
a. Inspect spring leaves, retaining clips, and center
Rear
Semi-
39
broken or loose.
bolts for breaks and looseness. Tighten if loose; replace
annual
springs
if broken (para. 7-17).
and
spring
b. Inspect both front and rear spring wear pads (6) for
seats
wear. Replace if rear spring (5) is rubbing spring bracket
(4) (para. 7-17).
c. Test spring seat bearing freeplay by:
1. Placing a jack under spring seat bracket (9) and
raising wheel off ground (para. 9-2).
2. Place a prybar between U-bolt saddle (2) and lifting
pin (3).
3. Pull up on prybar. If there is any free play, adjust
spring seat bearing (para. 7-18).
U-bolts are loose
d. Inspect spring U-bolts (1) for looseness. If loose,
or broken.
tighten 300-400 lb-ft (407-542 Nm).
40
Torque rods are
a. Inspect torque rods for cracks, looseness, and
Semi-
Torque
cracked, loose, or
damage. Tighten nuts 350-400 lb-ft (475-542 Nm).
annual
rods
darnaged.
Replace if cracked or broken.
1. Place flat end of bar between torque rod (7) and
mounting bracket (8).
2. Push on end of bar until hook end moves 4-6 in.
(10-15 cm).
3. Release pressure on bar. Replace if torque rod (7)
does not return to its original position (para. 7-20).
2-30
