TM-9-2320-285-24-2
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-2 - Page 32 of 698
TM 9-2320-285-24-2
3-5.
COOLING SYSTEM MAINTENANCE (CONT)
c.
Fan Drive Assembly.
This task covers:
a.
Disassembly
c.
Inspection
b.
Cleaning
d.
Reassembly
INITIAL SETUP
Tools
Materials/Parts
No.
1 Common Organizational Maintenance
Cleaning solvent
Item 1, Appendix C
Tool Kit
Clean cloths
Item 2, Appendix C
Socket wrench set
Lubricant
Item 17, Appendix C
Screwdriver
Sealant
Item 19, Appendix C
Socket head screw key set
Mineral spirits
Item 33; Appendix C
Torque wrench
Bearing grease
FSCM 31875 PN 808537
Retaining ring pliers
Seal kit
FSCM 31875 PN 819883
Safety glasses
Lock washer
FSCM 31875 PN 995
Automotive Mechanic’s Tool Kit
Hammer
Personnel Required
Adjusting nut socket
Automotive Repairer MOS 63H
FSCM 31875 PN B11861
Vise
Equipment Condition
Brass drift
Paragraph
Condition Description
Arbor press
2-15d
Fan drive assembly removed.
STEP
LOCATION
ITEM
ACTION
REMARKS
DISASSEMBLY
1
Fan drive
a.
Bracket (28)
Clamp
In vise, sheave (27) and
assembly
air chamber (3) free to
rotate
b.
Eight socket
Remove and
head cap-
discard
screws (1)
and lock
washers (2)
c.
Air chamber (3)
Remove
Apply air pressure to fitting
to aid removal, if
necessary
d.
O-rings (4 and
Remove and
5)
discard
e.
Retaining ring
Remove
Use retaining ring pliers
(6)
f.
O-ring (7),
Remove
Discard cartridge assembly
cartridge (8),
(6 thru 9)
and U-cup (9)
3-26
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