MACHINE CONFIGURATION
SLEW SYSTEM
III-10TB53FR
Removing the Slew Bearing
1. Remove the hoe attachment.
“Attachments, Disassembly and Assembly”
2. Remove the upper frame.
“Removing the Upper Frame”
3. Remove the inner race fixing bolts.
Bolt: 256 ±12.7 N·m
• Apply thread lock to the bolts.
4. Suspend the slew bearing and remove it.
Slew bearing: 84 kg
Installing the Slew Bearing
Follow the same procedure as for removal in the
reverse order.
• When mounting the slew bearing on the upper
frame, be sure to position the reamer bolts and the
grease holes as illustrated in the right figure.
• Apply grease to the inner teeth of the slew bearing.
Removing the Swivel Joint
1. Remove the upper frame.
“Removing the Upper Frame”
2. Disconnect the hoses (1) from the hub side.
• Make a mark on the hoses at the position of
connection.
3. Remove the installation bolts (2), then remove
the swivel joint (3).
Bolt: 102 ±5.1 N·m
• Apply thread lock to the bolts.
Swivel Joint: Approx. 22 kg
Installing the Swivel Joint
Follow the same procedure as for removal in the
reverse order.
• When mounting the swivel joint, tighten it tempo-
rarily with the fixing bolts, and center the swivel
joint by using a dial gauge (4).
• Adjust the centering so that the deviation from the
center is within 0.25 mm.
L2C207
4
."+ $
J1C204
FRONT
GREASE APPLYING HOLE
REAMER BOLT
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