TM-9-2320-280-34
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1996
TM-9-2320-280-34 - Page 792 of 1258
TM 9-2320-280-34
1 7 - 1 4
Change 1
1 7 - 5 .
TRANSMISSION CASE REPAIR (3L80)
Manual References
TM 9-2320-280-24P
Equipment Condition
Transmission disassembled into subassemblies
(para. 17-3).
General Safety Instructions
• Compressed air for cleaning purposes will not
exceed 30 psi (207 kPa).
• Protective clothing must be used when steam
cleaning.
Maintenance Level
General support
NOTE
Work area should be well-ventilated, clean, and free from blowing
dirt and dust.
1.
Remove transmission case (3) from transmission holding fixture.
WARNING
When steam cleaning, protective clothing must be used. Failure to
do this may cause serious injury.
2.
Thoroughly steam clean transmission case (3).
WARNING
Compressed air used for cleaning purposes will not exceed 30 psi
(207 kPa). Use only with effective chip guarding and personal
protective equipment (goggles/shield, gloves, etc).
3.
Blow all dirt and cleaning solution from transmission case (3) with compressed air.
NOTE
For general inspection instructions, refer to para. 2-14.
1.
Inspect all surfaces and general overall condition of transmission case (3).
2.
Inspect front and rear band anchor pins (2) for looseness. Replace transmission case (3) if anchor pins
(2) are loose or missing.
3.
Inspect intermediate clutch plate lugs (5) for damage. Replace transmission case (3) if lugs (5) are
damaged.
4.
Inspect governor bore (1) for scoring, pitting, or damage. Replace transmission case (3) if scored,
pitted, or damaged.
NOTE
If transmission was manufactured before March 1, 1990 and a new
transmission case is to be used, install a new center support assembly.
5.
Inspect all threaded holes in transmission case (3) for damage. Repair any damaged threaded hole
with thread repair inserts. If unable to repair threaded hole, replace transmission.
b. Inspection
a. Cleaning
INITIAL SETUP:
Applicable Models
All vehicles except: M997A2, M1025A2,
M1035A2, M1043A2, M1045A2, M1097A2,
M1123
Tools
General mechanic’s tool kit:
automotive (Appendix G, Item 1)
Special Tools
Bushing service set (Appendix G, Item 33)
Driver handle (Appendix G, Item 34)
Materials/Parts
Bushing (Appendix E, Item 4)
Center support assembly (Appendix E, Item 5.1)
This task covers:
a.
Cleaning
b.
Inspection
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