TM 55-1520-240-23-5
6-22
REMOVE COMBINING TRANSMISSION AFT OUTPUT SHAFT ADAPTER ASSEMBLY
6-22
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanics Tool Kit, NSN 5180-00-323-4692
Workstand
Materials:
Cloth, Cleaning (E120)
Dry Cleaning Solvent (E162)
Gloves (E184.1)
Goggles (E473)
Personnel Required:
CH-47 Helicopter Repairer (2)
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Aft Drive Shafting Removed (Task 6-21)
Tiedown Line Installed on One Forward Rotor Blade
(Task 1-26)
1.
Remove lockring (1) from retainer (2).
2.
Have helper hold rotor blade (3) in position with
tiedown line (4).
3.
Remove retainer (2) from adapter assembly (5).
4.
Remove adapter assembly (5) from output shaft
(6).
WARNING
Dry cleaning solvent is flammable and
toxic. It can irritate skin and cause
burns. Use only in well-ventilated
areas, away from heat and open
flame. In case of contact, immediately
flush skin or eyes with plenty of water
for at least 15 minutes. Get medical
attention for eyes.
5.
Clean splines of output shaft (6) using dry
cleaning solvent (E162) and cloths (E120). Wear
gloves (E184.1).
6.
Inspect splines on output shaft (6) for wear. If
wear is evident, proceed as follows:
a.
Place a straightedge (6 inch metal ruler or
equivalent) along the length of the spline,
with the ruler spanning the worn area.
b.
Using a feeler gauge, measure the depth of
wear below the face of the spline.
c.
If spline wear exceeds 0.005 inch, replace
combining transmission.
FOLLOW-ON MAINTENANCE:
None
END OF TASK
Change 1
6-67