TM 55-1520-240-23-4
5-81.1
REPLACE SHOCK ABSORBER BRACKET BUSHINGS
(Continued)
5-81.1
22.
Remove finish from upper plate (8) for 1 inch
around bushing bore (12). Use cloth (E120)
damp with acetone (E20). Wear gloves (E184.1).
23.
Inspect plate (8) in the area of finish removal for
condition as follows:
a.
If any damage in that area extends more than
0.030 inch from bushing bore (12), or bore is
elongated, reject the rotor blade.
b.
Measure bore (12) in two places; one parallel
to the blade and one at right angle to the
blade. If the bore is out of round by more
than 0.002 inch or exceeds the dimension for
any bushing listed in Table 1, it must be to the
next largest size shown in Table 1.
c.
If bore (12) matches any size shown in Table
1, proceed to step 24. Install the proper
bushing.
REAM UPPER BORE
24.
Ream the upper bore for an oversize bushing
as follows:
a.
Select the proper reamer (13) from Table 1.
b.
Place sleeve (14) over reamer guide pin (15).
c.
Turn the blade over so that shavings and
debris from reamer (13) will not fall on reamer
guide pin (15). Binding may result.
d.
Insert reamer guide pin (15) through the
bore in upper plate (8) and engage it in lower
bushing (2). Hand ream the bore to size. Do
not attempt to remove more than 0.010 inch
of material with one cut of the reamer.
e.
Remove equipment from the blade. Clean
the bore and surrounding area. Use clean
cloths (E120) damp with acetone (E20).
Wear gloves (E184.1).
INSPECT
5-464
