TM 1-1520-238-23
6-21
6.4.
MAIN TRANSMISSION TAIL ROTOR COUPLING REMOVAL/INSTALLATION – continued
6.4.3. Removal
CAUTION
Do not allow entire weight of No. 3 tail
rotor drive shaft to be supported by for-
ward hanger bearing assembly. Support
forward end of drive shaft while tail rotor
coupling is removed. If coupling is to re-
main out, remove drive shaft and secure
tail rotor to prevent turning. Failure to
support drive shaft may result in damage
to drive shaft and/or forward hanger bear-
ing assembly.
a. Remove tail rotor coupling (1).
(1) Remove five bolts (2) attaching main trans-
mission output flange (3) to coupling (1) for-
ward flange.
(2) Remove five bolts (4) attaching coupling (1)
aft flange to No. 3 tail rotor drive shaft (5).
(3) Remove coupling (1).
b. Remove antiflail bearing sleeves (6) and (7)
from coupling (1).
(1) Remove nut (8).
(2) Remove washer (9), bearing sleeves (6) and
(7), and washer (10) from bolt (11).
(3) Remove bolt (11) from coupling (1).
6.4.4. Cleaning
a. Clean removed and attaching parts or sur-
faces (para 1.47).
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M04-0435-1
M04-0435-2
5
2
3
1
4
M04-0435-5
11
10
8
9
1
6
7
