TM 55-1670-251-20&P/TO 13D3-2-2
remove pin assemblies to release the strap assem-
fraying and abrasion. Check buckle for burrs
blies from the spreader bar assembly and shackle.
which may cause abrasion and deburr as required.
Remove pin assembly from spreader bars (3) and
Replace frayed or abraded straps.
(5). Separate spreader bars and examine both
k. Rotor Head Sling Arrangement. Check
segments for dents, galling and weld cracks.
Localized dents are acceptable if they do not
fraying and abrasion. If this type of wear is
impair the sliding engagement of the spreader
evident the assembly should be replaced. Inspect
bars. Those areas exhibiting galling should be
the shackle assembly (1) and (2) for evidence of
smoothed by burnishing. Any evidence of cracks,
wear. Burrs which may occur on the body of the
(these are most likely to appear in the vicinity
pin or on the shackle tube should be polished
of the welds) shall warrant replacement. Check
smooth. If the protective plating is worn through
all pin assemblies for burrs and wear. If burrs
or peeling, or if there are any indications of
are evident they should be smoothed by burnish-
cracks the assembly should be replaced.
ing. If the protective plating of any pin is
1. Spreader Bar Arrangement. Using
worn through it should be replaced. Any lanyards
that are frayed or broken should be replaced.
1. Rotor head shackle pin
2. Rotor head shackle
4. Antichafe pad
3. Strap assembly
Figure 2-9. Rotor Head Sling Arrangement P/N 1670EG043-1.