3-82. DRIVEBELTS ADJUSTMENT
This task covers:
a. Power Steering Belt Adjustment
b.
Alternator Belt Adjustment
a. Power Steering Belt Adjustment
INITIAL SETUP:
Applicable Models
All vehicles except: M997A2, M1025A2,
M1035A2, M1043A2, M1045A2, M1097A2,
M1123
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Special Tools
Belt tension gauge (Appendix B, Item 67)
Materials/Parts
Locknut (Appendix G, Item 58)
Personnel Required
One mechanic
One assistant
Manual References
TM 9-2320-280-10
TM 9-2320-280-24P
Equiment Condition
• Hood raised and secured (TM 9-2320-280-10).
• Battery ground cable disconnected (para. 4-73).
1.
Remove locknut (5), washer (6), capscrew (2), spacer (4), and two clamps (3) from return and control
valve hoses (7) and (8) and alternator bracket (1). Discard locknut (5).
2.
Loosen three capscrews (15) from power steering pump bracket (16) and support brackets.
CAUTION
Do not pry against power steering pump housing with pry bar when
adjusting belt tension. Pump could be damaged.
NOTE
There are two square holes in the power steering pump bracket, one in front,
accessible from above; and one in back, accessible from under the vehicle.
Either can be used to adjust belt tension.
3.
Adjust power steering belt set (9) using 1/2-inch breaker bar in square hole of power steering
bracket (16). Apply force until belt set (9) appears tight and tighten capscrews (15).
4.
Using belt tension gauge, check each belt individually for proper tension, refer to table 3-2, Belt
Tension Requirements.
5.
If belt set (9) tension is correct, tighten three capscrews (15) on power steering pump bracket (16) to
40 lb-ft (54 N•m). If not, repeat steps 2 through 5. If tension cannot be properly adjusted, replace
belt set (9) (para. 3-80).
6.
Install return and control valve hoses (7) and (8) to alternator bracket (1) with spacer (4), two
clamps (3), capscrew (2), washer (6), and locknut (5). Tighten locknut (5) to 8 lb-ft (11 N•m).
b. Alternator Belt Adjustment
1.
Loosen capscrew (11) and two capscrews (13.1) on alternator (13) and alternator bracket (14).
TM 9-2320-280-20-2
3-140
Change 2
NOTE
Prior to making any belt adjustments, check belt tension with belt tension
gage. Drivebelt adjustment should only be done if belt tension is below 70 lbs
(32 kg). Check alternator belts from above engine; power steering belts from
under vehicle. Adjusting power steering belts can affect alternator belt
tension. Always check alternator belt tension after adjusting power steering
belts. To adjust air-conditioning belt, refer to para. 11-202.
