Sinoboom AB14EJ - Slewing Mechanism

© May 2023
40
GTZZ14EJ&16EJ Maintenance Manual
CHASSIS AND TURNTABLE ASSEMBLY
Table 5-4 Description of installing front wheel
bearing housing
No.
Description
1 Dust cover
2
Sealing gasket
3
Cotter pin
4 Slotted nut
5
Spacer
6 Front tire
7
Bearing
8
Bearing housing
9
Bearing
10 Framework oil seal
11
Retaining ring
Precautions for disassembly and installation:
1. To install and adjust the wheel hub, fully tighten the
slotted nut first, and then loosen it by 1/6 turn to
leave proper clearance for the bearing, so that the
bearing can move smoothly and without axial
movement.
2. Do not reuse a removed cotter pin which should be
replaced with a new one.
5.5 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.
Fig 7 Diagram of slewing mechanism
1
2
3
A
B