HOOK BLOCK ASSEMBLY
Hook block removed. (Refer to TM 5-3810-306-20.)
b. Remove retaining rings (26), grooved pin
(27), latch (23) and spring (24). Remove
quick release pin (25).
1. DISASSEMBLE HOOK BLOCK.
c. If necessary remove grease fitting from
a. Lay hook block on its side and remove
b. If necessary remove three grease fittings
from center pin (6).
c. Remove spirol (-0), setscrew (5) and nut
Dry cleaning solvent P-D680 is toxic
d. Remove side plate (9) and spacers (16).
goggles and gloves and use only in a
well ventilated area. Avoid contact
e. Remove first sheave assembly (11), thrust
with skin, eyes, and clothes and do
washers (12), and plate (15). Remove
not breathe vapors. Do not use near
remaining sheaves (11), spacers (16), and
open flame or excessive heat. The
plates (15) in same manner.
flash point is 100F138F (38-59C).
If you become dizzy while using
f. Remove hook (19) and spacers (28).
cleaning solvent, get fresh air
immediately and get medical aid. If
g. Remove tie bolts (8) and center pin (6).
contact with eyes is made, wash your
eyes with water and get medical aid
SHEAVE ASSEMBLIES (14).
Compressed air used for cleaning
purposes will not exceed 30 psi. Use
only with effective chip guarding and
Use care when driving out roller
(goggles/shield, gloves, etc.).
3. DISASSEMBLE HOOK.
a. Remove setscrew (18), nut (19), thrust
bearing (20) and housing (21).