Graco Viscount II 4500 Pump [12/16] Service

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Service

Disconnecting the Hydraulic Motor

WARNING

reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure

on page 8.

Relieve the pressure

Close the hydraulic supply line shutof

f valve first, and

then the return line shutof

f valve. Disconnect the

hydraulic supply

, return, and drain lines from the motor

Remove the cotter pin (1) and unscrew the connecting

rod coupling nut (7). See the Parts Drawing on

page 13.

Remove the tie rod lock nuts (3), then unscrew the tie

rods (6) from the hydraulic motor base. See the parts

drawing on page 13.

See separate instruction manual 307–158 for hydraulic

motor service instructions, and 307–728 for the dis

placement pump.

When reconnecting the motor to the displacement

pump, be sure the pump outlet is 90

counterclockwise

(looking at the top of the motor) from the motor inlet

and outlet. Refer to the illustration on the front cover

Use locking compound and tighten the tie rods (6)

securely into the hydraulic motor base. torquing the

40–50 ft-lb (54–68 N

Sm). T

orque the tie rod locknuts

(3) to 40–50 ft-lb (54–68 N

Sm).