Disconnect the rotation hoses from the valve bank. Disconnect the remote control handle.
Support the crane with an overhead crane, forklift or other lifting device. Take up the slack in lifting device.
With crane fully supported, remove all turret (1) mounting bolts (2). Lift off the crane and set it to one side.
Remove screws (3), plate (4), screws (5) and cover (6).
Remove screws (7) and lift out swing drive (8) and motor (9).
Remove screws (10) and access plates (11).
Remove screws (12) and lift out gear-bearing (13).
Position new gear-bearing (13) on base (14). Install screws (12) and tighten in a criss-cross pattern to 180 ft-lbs.
Position the swing driver (8) and motor (9), and install screws (7), cover (6), screws (5), plate (4) and screws (3).
Grease the gear-bearing and coat the entire outside diameter of the gear with a thick layer of grease.
m. Lift the crane and position turret (1) on the base (14). Install mounting bolts (2) and tighten in a criss-cross
pattern to a torque of 180 ft-lbs.
Reconnect all hydraulic connections, using thread sealer on all connections. Install access plates (11) and
Operate the crane and test actuate all functions. Each function should be operated until the motion is smooth
and air is purged from system.