TM 9-2320-272-24-3
4-62. FAN DRIVE CLUTCH (M939A2) MAINTENANCE
THIS TASK COVERS:
c. Assembly
a. D i s a s s e m b l y
b. Cleaning and Inspection
INITIAL SETUP:
REFERENCES (TM)
APPLICABLE MODELS
TM 9-2320-272-10
M939A2
TM 9-2320-272-24P
TOOLS
EQUIPMENT CONDITION
General mechanic's tool kit (Appendix E, Item 1)
Fan clutch removed (para. 3-74).
Snap gauge (Appendix E, Item 123)
GENERAL SAFETY INSTRUCTIONS
Torque wench (Appendix E, Item 144)
Arbor press
l Return spring is under compression and may
Vise
cause injury if not properly removed.
l When cleaning with compressed air, wear
MATERIALS/PARTS
eyeshield.
Fan drive repair kit (Appendix D. Item 108)
Adhesive sealant (Appendix C, Item 4)
GAA grease (Appendix C, Item 28)
Rags (Appendix C, Item 58)
Antiseize tape (Appendix C, Item 72)
a. Disassembly
Install bracket (4) in soft-jawed vise, with housing (3) facing up.
1.
Place prybar between studs (1) to keep housing (3) from turning.
2.
Remove cap (2) from housing (3).
3.
Remove locknut (5), spring washer (6), spacer (7), housing (3), pulley (8), and spacer (9) from
4.
shaft (10). Discard locknut (5), spring washer (6), and spacer (7).
WARNING
Return spring, located between thrust cap and piston, is under
compression. Wear eyeshields and follow disassembly instructions
carefully, or injury to personnel may result.
Install housing (3), facing up, in a soft-jawed vise.
5.
Remove six screws (11) from housing (3), leaving two screws (11) installed opposite one another.
6.
NOTE
Assistant will help with steps 7 and 8.
While assistant holds down thrust cap (12), alternately loosen and remove two remaining
7.
screws (11) from housing (3).
Slowly release and remove thrust cap (12), return spring (13), clutch facing (14), and spacer (15)
8.
from housing (3). Discard clutch facing (14) and spacer (15).
Remove piston (16) from housing (3) as follows:
9.
a. Install cap (2) on housing (3), and place housing (3) on bracket (4).
b. Wrap rag around base of shaft (10).
4-370