TM 9-2320-272-24-1
THIS TASK COVERS:
a. Adjustment
c. Inspection
d. Installation
b. Removal
REFERENCES (TM
APPLICABLE MODELS
TM 9-2320-272-10
M939/A1
TM 9-2320-272-24P
TOOLS
EQUIPMENT CONDITION
General mechanic's tool kit (Appendix E, Item 1)
Belt tension gauge (Appendix E, Item 16)
Parking brake set (TM 9-2320-272-10).
Hood raised and secured (TM 9-2320-272-10).
Torque wrench (Appendix E, Item 146)
Air reservoirs drained (TM 9-2320-272-10).
MATERIALS/PARTS
Right splash shield removed (TM 9-2320-272-10).
Cap and plug set (Appendix C, Item 14)
GENERAL SAFETY INSTRUCTIONS
Antiseize tape (Appendix C, Item 72)
Do not disconnect air lines or hoses before draining
air reservoirs.
Do not disconnect air lines or hoses before draining air reservoirs.
Small parts under pressure may shoot out with high velocity,
causing injury to personnel.
1.
Disconnect air line (7) from elbow (8).
2.
Remove elbow (8) and adapter (9) from union (10).
3.
Loosen three screws (1) on fan pulley bracket (6).
4.
Loosen jamnut (2) on adjusting screw (3) on water pump clamp ring (4).
Using belt tension gauge on inner belt midway between pulleys, adjust tension of inner belt (5) by
5.
turning screw (3). Tension should be 95-105 lb-ft (423-467 Nm) for a new belt (5) and 85-95 lb-ft
(378-422 Nm) for a used belt (5).
Repeat tension check of step 5 for outer belt (5). Recheck inner belt (5).
6.
NOTE
Belts must be replaced as a matched set.
7.
If either inner or outer belts (5) cannot be adjusted in proper range, replace both belts (5).
Tighten top screw (1) 25-35 lb-ft (34-47 Nm). Tighten two side screws (1) 25-35 lb-ft (34-47 Nm).
8.
NOTE
Male pipe threads must be wrapped with antiseize tape before
installation.
Install adapter (9) and elbow (8) on union (10).
9.
Connect air line (7) to elbow (8).
10.
1.
Disconnect air line (7) from elbow (8).
2.
Remove elbow (8) and adapter (9) from union (10).
3.
Loosen three screws (1) on bracket (6).
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