Figure 3-93. Front hook rollers, removal and installation.
and keeper plate, use wedges on cribbing, or the jack to
(4) Remove remaining hook roller in a similar
take arm weight off eccentric pin, then remove eccentric
manner.
pin.
(5) Install in reverse order.
(3) Remove four capscrews, lockwashers,
b. Cleaning, Inspection, and Repair.
and two keeper plates, push roller pins inward slightly to
(1) Clean all parts in an approved cleaning
make retainer accessible, remove retainer, then pull
solvent and dry thoroughly.
roller pips outward and remove rollers and pins.
(2) Visually inspect mounting hardware for
Remove lubrication fittings and bushings from the two
burs or stripped threads, inspect eccentric shaft (pins) or
roller pin.
rollers for signs of excessive wear, grooves, chips, or
(4) Remove remaining rear hook roller in a
cracks.
similar manner.
(3) Repair by replacing damaged, defective
(5) Install in reverse order.
or worn parts.
b. Cleaning, Inspection, and Repair.
(1) Clean all part in an approved cleaning
c. Adjustment. Adjust hook rollers as directed in
solvent and dry thoroughly.
(2) Visually inspect pins for grooves, cracks,
chips or other damage. Inspect mounting hardware for
3-119. Rear Hook Rollers
burs or stripped to.
a. Removal and Installation.
(3) Repair by replacing damaged, defective,
(1) Lower boom until point is slightly below
or worn parts.
the horizontal with weight of boom resting on cribbing
c. Adjustment. Adjust rear hook rollers an directed
similar to that shown in figure 2-6.
(2) Support the swivel arm (fig. 3-94) with
cribbing or a jack, remove two capscrews, lockwashers,
3-101
