SECTION 3 - CHASSIS & TURNTABLE
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3-53
3.15 SWING HUB REMOVAL
1.
Disconnect all wiring harness terminals connected to
the swing motor.
2.
Gently loosen the set screw. Do not remove.
3.
Remove the pivot bolt using Allen Wrench.
4.
Remove the mounting bolts securing swing drive hub to
the turntable.
5.
Using the suitable lifting device, remove the swing drive
hub from mounting plate without damaging the swing
gear.
6.
Place swing drive hub in the clean area.
7.
Refer to Section 3.14, Swing Drive, for swing drive main-
tenance.
3.16 SWING HUB INSTALLATION
Ensure mounting plate and mounting location of the base
plate are clean and painted with a uniform coating of mini-
mum thickness (no runs, drips, etc.).
Procedure For Setting Swing Gear Backlash
Set backlash to 0.010 in. to 0.015 in. (0.254 mm - 0.381 mm)
using the following procedure:
1.
Place the machine on firm, level ground.
2.
Place shim between pinion and bearing at bearing high
spot (shown below).
3.
Apply High Strength Threadlocking Compound and
torque pivot bolt to 205 ft. lbs. (280 Nm) (shown below).
NOTE:
Make sure the turntable is properly supported during the
following step. The turntable can swing a few degrees
when the turntable lock is removed if the turntable is not
balanced properly.
Pivot Bolt
Mounting Bolt
Jack Bolt
Jam Nut
HIGH SPOT
marked with yellow paint
HIGH SPOT in this area with
two x's and yellow paint in
tooth space.
Pivot Bolt
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