CHASSIS AND TURNTABLE ASSEMBLY
AB16EJ Plus Maintenance Manual 37
© Mar. 2023
1. Drive the machine to rotate the reducer to the posi-
tion with one oil port at the top (as shown above).
2. Remove the oil plug from the oil port 1 and oil port 2.
3. Add new gear oil to the oil port #1 until the oil level
is even with the oil port #2 (refer to Oil Require-
ments for viscosity grade).
4. Reinstall the oil plug.
5. Clean up the gear oil spills during the process.
Disassembly and Installation
Disassembly
1. Make sure the machine is in stowed position.
2. Press the main power switch and disconnect all
power sources (such as battery charger) connected
to the machine.
3. Place a jack of sufficient capacity under the chassis
side to be removed.
4. Remove the tires and place them in an appropriate
area using suitable lifting equipment.
5. Mark and disconnect the harness connections on
the travel motor.
6. Use suitable lifting equipment to support the travel
motor.
7. Remove the travel motor mounting bolts and slowly
remove the travel motor from the outriggers with the
assistance of lifting equipment.
8. Use suitable lifting equipment to support the travel
reducer.
9. Remove the mounting bolts and washers on the
travel reducer, and slowly remove the travel reducer
from the outrigger with the assistance of lifting
equipment.
Installation
1. Use suitable lifting equipment to support the
outriggers.
2. Use suitable lifting equipment to lift the travel reduc-
er to the correct installation position, fit the washer
face with the mounting surface, apply Loctite 272
threadlocking adhesive to the mounting bolts of
travel reducer and install them one by one.
3. Tighten the bolts with a torque wrench according to
the specified torque.
4. After installation, fill appropriate amount of industrial
gear oil with the viscosity grade of 75W-90 as
needed.
5. After cleaning the mounting surface, mesh the mo-
tor spline shaft with the inner teeth of the reducer,
and slowly rotate the motor housing to align the mo-
tor mounting groove with the mounting hole on the
outrigger.
6. After applying Loctite 272 threadlocking adhesive to
the travel motor mounting bolts, install them one by
one and pre-tighten them.
7. Tighten the bolts with a torque wrench according to
the specified torque.
8. Reconnect the electrical harness.
5.4 SLEWING MECHANISM
The slewing mechanism, installed on the turntable, is
mainly composed of a slewing bearing (slewing reducer)
and a motor, and acts as the drive device for slewing ac-
tion. The inner ring (worm gear) of the slewing bearing
is connected to the turntable by bolts, and the outer ring
is connected to the chassis by bolts. The reducer is driv-
en by the motor to realize the rotation of the inner ring
(worm gear) of the slewing bearing, so as to rotate the
turntable.
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