7211 & 7221 MARINE TRANSMISSIONS Caterpillar

(1) 3N9170 and 5N4756 Disc Assembly thickness (new) ... .336 ± .005 in.(8.53 ± 0.13 mm)

(2) 3N9171 Plate thickness (new) ... .189 ± .005 in.(4.80 ± 0.13 mm)

Thickness of three new discs and three new plates ... 1.55 to 1.61 in.(39.4 to 40.9 mm)

NOTE: Depth of grooves in a worn lining on a disc, not less than ... .015 in.(0.38 mm)

(3) Torque for bolts (eight) ... 12 ± 1 lb. ft.(17 ± 1 N·m)

(4) 5N3015 Spring:

Length under test force ... 2.00 in.(50.8 mm)

Test force ... 150 ± 7.5 lb.(665 ± 34 N)

Free length after test ... 3.00 in.(76.2 mm)

Outside diameter ... .874 in.(22.20 mm)

(5) Torque for nut (spanner) ... 516 ± 18 lb. ft.(700 ± 24 N·m)