TM 9-2320-272-24-1
Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).
PROCEDURE
46
Annual E n g i n e
2. Check left-side engine mounting locknuts (1) and
compart-
right-side engine mounting screws (6) for looseness. If loose,
ment and
tighten 120-140 lb-ft (163-190 Nm).
cab
3. Check two upper locknuts (4) securing left engine
(Contd)
mount (2). If loose, tighten 90 lb-ft (122 Nm). Check two
lower locknuts (3) for looseness. If loose, tighten 60 lb-ft
(82 Nm).
4. Check two upper locknuts (7) securing right engine
mount (5) for looseness. If loose, tighten 90 lb-ft (122 Nm).
Check two lower locknuts (8) for looseness. If loose, tighten
60 lb-ft (81 Nm).
4 7 Annual
a, Inspect forward-rear and rear-rear axle housings and
Rear
differentials for cracks.
suspension
WARNING
Do not allow grease or oil to contact brake linings.
Linings can absorb grease and oil, causing early
glazing and very poor braking action. Failure to
comply could cause serious injury or death to
personnel.
b. Tighten forward-rear and rear-rear axle drive flange
screws 80-105 lb-ft (108-142 Nm).
c. Ensure all differential companion flange mounting
screws and U-joint mounting screws are tight. Tighten
companion flange mounting screws 30-40 lb-ft (41-54 Nm)
and U-joint mounting screws 90-110 lb-ft (122-149 Nm).
d. Test spring seat bearing free play by placing jack under
spring seat bracket. Raise vehicle so spring moves freely
up and down in guide brackets. Put prybar between U-bolt
saddle and lift pin. Pull up on prybar. If there is free play,
adjust spring seat bearing (para. 3-169).
2-45
