TM 9-2320-272-24-3
4-61. FAN DRIVE CLUTCH (M939/A1) MAINTENANCE
THIS TASK COVERS:
a. Disassembly
c. Assembly
b. Cleaning and Inspection
d. Fan Drive Clutch Operation Check
INITIAl SETUP:
APPLICABLE MODELS
MATERIALS/PARTS (Cod)
M939lAl
O-ring (Appendix D, Item 448)
O-ring (Appendix D, Item 449)
SPECIAL TOOLS
O-ring (Appendix D, Item 450)
Mandrel (Appendix E, Item 116)
Bearing (Appendix D, Item 11)
Bearing replacer (Appendix E, Item 13)
Two bearings (Appendix D, Item 12)
Rags (Appendix C, Item 58)
TOOLS
GAA grease (Appendix C, Item 28)
General mechanic's tool kit (Appendix E, Item 1)
REFERENCES (TM)
Torque wrench (Appendix E, Item 146)
Vise
TM 9-2320-272-10
Arbor press
TM 9-2320-272-24P
MATERIALS/PARTS
EQUIPMENT CONDITION
O-ring (Appendix D, Item 451)
Fan drive clutch removed (para. 3-75).
Locknut (Appendix D, Item 305)
GENERAL SAFETY INSTRUCTIONS
Snapring (Appendix D, Item 659)
Piston spring is under compression and may cause
injury if not properly removed.
When cleaning with compressed air, wear
eyeshield.
Install clutch assembly (7) in soft-jawed vise.
1.
2.
Remove seal plug (1) from clutch assembly (7).
3.
Remove O-rings (2) and (31 from seal plug (1). Discard O-rings (2) and (3).
Remove expansion locknut (4). washer (5), and spacer (6) from shaft (10). Discard locknut (4).
4.
Remove clutch assembly bracket (9) from clutch assembly (7).
5.
Remove spacer (8) from shaft (10).
6.
Remove clutch assembly (7) from vise and set on workbench with thrust plate (11) facing up.
7.
4-356
