TM 1-1520-238-23
Change 5
5-50.1
5.8.
MAIN ROTOR BLADE PHASE ADJUSTMENT – continued
c. If blade does not return to phase, disconnect
forward damper (21) (subparagraph 5.8.4,
step a.).
(1) Move blade into phase.
(2) Adjust leading damper (21) rod end (26) so
bolt drops in unassisted.
(3) Adjust trailing damper so bolts drop in unas-
sisted (within 1/2 turn).
(4) Connect damper rod end (26) to link (27) us-
ing bolt (28), angle bracket (31), sleeve bush-
ing (32), washer (33), washer (30), and nut
(29). Use box wrench and ratchet.
(5) Torque nut (29) to 675 INCH-POUNDS. Use
torque wrench and box wrench.
(6) Torque nut (25) to 1650 INCH-POUNDS. Use
crowfoot and torque wrench.
(7) Lockwire nut (25) to key washer (24). Use
wire (item 225, App F).
(7) Repeat phase check and adjustment starting
at subparagraph 5.8.3, step k. until blade (1)
is in phase.
d. Go to subparagraph 5.8.3, step a. thru c. and j.
thru l. for remaining blades.
e. Go to para 5.24, step 5.24.6.i and apply sealing
compound to installation as required.
END OF TASK
M04-3042-18
21
26
M04-3042-5A
21
1
28
27
29
26
30
25
24
31
32
33
M04-3042-24
