69D and 769D Off-Highway Truck and 771D Quarry Truck Air System and Brakes Caterpillar

Illustration 1	g00517640

Illustration 2	g00517778
Section A-A

(1) Torque for 18 bolts ... 750 ± 80 N·m (553 ± 59 lb ft)

(2) Torque for 17 bolts ... 750 ± 80 N·m (553 ± 59 lb ft)

(3) Torque for eight bolts ... 750 ± 80 N·m (553 ± 59 lb ft)

(4) Bolts

Quantity ... 4

Final torque ... 47.6 ± 4.1 N·m (35.1 ± 3.0 lb ft)

(5) Pins

Quantity ... Four

(6) Disc

New disc thickness ... 19.05 ± 0.50 mm (0.750 ± 0.020 inch)

Note: The clearance between pins (5) and disc (6) must not be less than 1.5 ± 0.5 mm (0.06 ± 0.02 inch). Check in four places. If the clearance is less than 1.5 ± 0.5 mm (0.06 ± 0.02 inch), turn bolts (4) counterclockwise by one turn. Slide pins (5) in order to provide 1.5 ± 0.5 mm (0.06 ± 0.02 inch) clearance. Torque bolts (4) to 47.6 ± 4.1 N·m (35.1 ± 3.0 lb ft).

(7) Lining

New lining thickness ... 16.5 mm (0.64 inch)

New lining thickness plus the thickness of the carrier ... 24.9 mm (0.98 inch)