3208 MARINE ENGINE Caterpillar


Pulley And Damper Group

Usage:

Install the damper assembly on the crankshaft until the hub of the damper assembly comes in contact with the gear on the crankshaft. DO NOT use the bolt and washer that holds the damper assembly on the crankshaft to install the damper assembly.

(1) Torque for bolt that holds the pulley ... 624 ± 80 N·m (460 ± 60 lb ft)

When a front power takeoff is used, increase torque for bolt to ... 950 ± 50 N·m (700 ± 37 lb ft)


Typical Rubber Damper

Install the damper assembly on the crankshaft until the hub of the damper assembly comes in contact with the gear on the crankshaft. DO NOT use the bolt and washer that holds the damper assembly on the crankshaft to install the damper assembly.

(1) Torque for bolt that holds the pulley ... 624 ± 80 N·m (460 ± 60 lb ft)

When a front power takeoff is used, increase torque for bolt to ... 950 ± 50 N·m (700 ± 37 lb ft)

(2) Distance from end of damper assembly to edge of dust shield ... 31.8 ± 1.5 mm (1.25 ± .06 in)

(3) When front power takeoff is used, tighten bolts to ... 55 ± 7 N·m (40 ± 5 lb ft)


Typical Viscous Dampers


NOTICE

Inspect the viscous damper for signs of leakage or a dented (damaged) case. Either condition can cause the weight to make contact with the case and affect damper operation.


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