Ingersoll-Rand 7792-A Upper Hook Disassembly, Upper Hook Assembly, Lower Hook Assembly Ton Models

Upper Hook Disassembly

-Remove nuts (153), washers (152) and bracket (150).

-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.

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.

Slide collar and balls over shank of hook and secure with roll 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 bracket (150), shafts (151), washers (152) and nuts (153).

CAUTION

Do not over-tighten nuts (153); tighten 25 to 30 ft. Ibs. torque.

Lower Hook Disassembly

1-Ton Models

-Remove snap ring (139).

-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 spacers (126).

-Remove shaft (128), spacers (127) and sheave (114).

-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 (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

(120)and assemble bearing races (119) and thrust 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

-Position shrouds (130) on lower hook assembly and secure with washers (133) and bolts (134).

Form 10590149-Edition 2 7