10-8. Cleaning, Inspection and Repair
worn, or otherwise defective parts.
a. Clean the backstop with an approved cleaning
10-9. Reassembly and Installation
solvent such as Federal Specification P-D-680 or
a. Refer to figure 10-3 and reassemble the backstop.
b. Inspect the backstop for cracks, using a magnetic
If the rod assembly (3) has been removed, insure all old
particle (magnaflux) method.
Inspect springs for
lubricant has been removed.
permanent set, cracks or other damage. Inspect all
b. Install backstop assembly as described in TM 5-
other parts for damage or excessive wear.
3810-295-12.Lubricate as described in LO 5-3810-295-
c. Repair is limited to replacement of damaged,
Section III. REPAIR OF HOOK BLOCK
c. Loosen setscrew (11) and remove nut
(12).Remove bearing (13).Remove latch (14) if
damaged. Remove hook (15) from trunnion (16).
The hook block is attached to the boom hoist line by two
pulleys (10, fig.10-4) and is used to lift and carry loads in
10-13. Cleaning, Inspection and Repair
a. Clean all parts with cleaning solvent, Federal
Specification P-D-680 or equivalent.
b. Inspect grease fittings for damaged threads and to
To remove hook block, lower load line to ground and
insure that fittings are not clogged. Repair or replace if
c. Inspect hook (15, fig.10-4) for cracks. Replace
hook if cracks are evident. Compare hook with a new
a. Remove lubrication fittings (1, fig.10-4).Remove
hook. If more than a 15 percent increase in throat
cotter pins (2), pin (3), retainer (4) and shaft (5).
opening or a 10 percent side bend is evident, replace
plates (17) and remove guard (8)
Remove spacers (6) and (7).Remove bearings (9) from