TM 5-4210-233-14&P-2
6-69. POWER TAKE-OFF UNIT
This task covers:
a. Disassembly
c.
Assembly
b. Cleaning and Inspection d.
Follow-on Maintenance
TOOLS REQUIRED:
EQUIPMENT CONDITION
Tool Kit, General Mechanics, Automotive
Gaskets (Figure 222, Appendix F)
(Appendix B, Section III, Item 1)
Retaining Rings (Figure 222, Appendix F)
O-Rings (Figure 222, Appendix F)
Shop Equipment, Automotive
Vee Ring (Figure 222, Appendix F)
Maintenance and Repair
(Appendix B, Section III, Item 4)
EQUIPMENT CONDITION
Main Engine Shutdown (see para 2-12.)
MATERIALS/PARTS REQUIRED
APU Shutdown (see para 2-16.)
Dry Cleaning Solvent (Item 3, Appendix E)
Batteries Disconnected (see para 4-114.)
Automatic Transmission Fluid (Item 16, Appendix E)
Power Take-off Unit Removed
Low-Lint Cleaning Cloth (Item 42, Appendix E)
(see para 5-49.)
Oil Seals (Figure 222, Appendix F)
a.
Disassembly.
NOTE
Check residual fluid for burnt or other unusual smell.
Check for metal particles which may indicate damage or
excessive wear. Check for damaged or excessively worn
parts.
(1)
Remove four hex head cap screws (1) and remove open end bearing cover (2) with back-up plate
(3), oil seal (4), gasket (5), and retaining ring (6). Discard gasket (5).
(2)
Remove retaining ring (6), back-up plate (3) and oil seal (4) from bearing cover (2). Discard oil
seal (4) and retaining ring (6).
(3)
Remove output shaft (7) with entire drive assembly (8 thru 25) out of open end of housing (26).
CAUTION
Support inner race of ball bearing (25).
(4)
Press drive end of shaft (7) out of ball bearing (25).
(5)
Remove retaining ring (24) from output shaft (7). Discard retaining ring (24).
(6)
Slide clutch back-up cylinder (23) and clutch piston and ball assembly (18) with wiggler wire (19),
Vee ring (22), and two O-rings (20 and 21) off end of shaft (7).
NOTE
Piston and ball assembly (18) can not be disassembled.
(7)
Remove piston and bail assembly (18) with two O-rings (20 and 21) and vee ring (22) from clutch
back-up cylinder (23).
6-405
