Ingersoll-Rand 7792-A Manuale Utente
Form 10590149-Edition 2
7
Upper Hook Disassembly
- Remove nuts (153), washers (152) and bracket (150).
- Drive out roll pin (147) - One-Ton Models. Roll pins
- Drive out roll pin (147) - One-Ton Models. Roll pins
(155) and (154) - Two-Ton Models.
- Remove collar (143) and balls (144) - One-Ton
Models. Collar (116), thrust bearing (120) and bearing
races (119) - Two-Ton Models.
races (119) - Two-Ton Models.
Upper Hook Assembly
Position hook on bracket (150).
Apply a liberal amount of grease to groove of collar (143) and
assemble eleven balls (144) to collar.
assemble eleven balls (144) to collar.
Slide collar and balls over shank of hook and secure with roll
pin (147) - One-Ton Models.
pin (147) - One-Ton Models.
Apply a liberal amount of grease to thrust bearing (120) and
assemble thrust races (119) and bearing (120) to shank of
hook. Secure with roll pins (154) and (155) - Two-Ton
Models.
assemble thrust races (119) and bearing (120) to shank of
hook. Secure with roll pins (154) and (155) - Two-Ton
Models.
Assemble bracket (150), shafts (151), washers (152) and
nuts (153).
nuts (153).
CAUTION
Do not over-tighten nuts (153); tighten 25 to 30 ft. Ibs.
torque.
torque.
Lower Hook Disassembly
1-Ton Models
- Remove snap ring (139).
- Slide snap ring (139) and sleeve (140) up on chain and
- Slide snap ring (139) and sleeve (140) up on chain and
remove pin (146).
- Separate connector (142) from bucket (145) and
remove pin (141).
- Drive out roll pin (147) and remove hook from bucket
(145).
2-Ton Models
- Remove bolts (134), washers (133) and shrouds (130).
- Remove bolts (124), (129), washers (125), and
- Remove bolts (124), (129), washers (125), and
spacers (126).
- Remove shaft (128), spacers (127) and sheave (114).
- Drive out roll pins (118) and (117).
- Remove collar (116), thrust bearing (120), bearing
- Drive out roll pins (118) and (117).
- Remove collar (116), thrust bearing (120), bearing
races (119) and hook (123).
Lower Hook Assembly
1-Ton Models
- Slide snap ring (139) and sleeve (140) on end of load
chain.
- Position end of load chain in connector (142) and
secure with pin (141).
- Assemble hook (149) to bucket (145).
- Apply a liberal amount of grease to groove of collar
- Apply a liberal amount of grease to groove of collar
(143) and assemble eleven balls (144) to collar.
- Assemble collar (143) over shank of hook and secure
with roll pin (147).
- Assemble bucket (145) to connector (142) and secure
with pin (146).
- Slide sleeve (140) over bucket (145) and secure with
snap ring (139).
2-Ton Models
- Assemble hook (123) to yoke (121).
- Apply a liberal amount of grease to thrust bearing
- Apply a liberal amount of grease to thrust bearing
(120) and assemble bearing races (119) and thrust
bearing to collar (116).
bearing to collar (116).
- Assemble collar (116) over shank of hook and secure
with roll pins (117) and (118).
- Lubricate roller bearing of sheave (114) and assemble
bearing race (115) to sheave.
- Assemble spacers (127), sheave (114) and shaft (128)
to yoke (121).
- Assemble washers (125) and spacers (126) to bolts
(124) and (129) and secure bolts to shaft (128).
- Feed load chain around sheave - with weld of standing
links facing out from sheave and attach end of chain to
anchor bracket (112) with pin (111) and retaining rings
(110).
anchor bracket (112) with pin (111) and retaining rings
(110).
- Position shrouds (130) on lower hook assembly and
secure with washers (133) and bolts (134).