TM 55-1520-240-23-4
5-41
INSTALL HORIZONTAL HINGE PIN BEARING CAP
(Continued)
5-41
5.
With leading and trailing caps (4) installed, check
horizontal pin clearance as follows:
a.
Attach dial indicator (7) to rotor hub (8).
b.
Position point of indicator (7) against pitch
vary oil tank sight indicator (9).
c.
Push pitch housing (10) away from dial
indicator (7) as far as possible.
d.
Hold housing (10) in position, and set dial
indicator (7) to 0.
e.
Pull housing (10) toward dial indicator (7) as
far as possible.
f.
Hold housing (10) in position and read dial
indicator (7). Remove indicator. If reading is
between 0.004 and 0.008 inch, go to step 6.
If reading is not within these limits, remove
trailing cap (4) and change thickness of shim
(2) as required.
g.
Replace cap (4). Repeat steps 1 thru 4.
5-181
