Sinoboom TB20J Plus - Check Oil Level in Slewing Reducer

© Feb. 2023
40 TB20J Plus Maintenance Manual
CHASSIS AND TURNTABLE ASSEMBLY
Fig 7 Diagram of slewing mechanism
Table 5-3 Slewing mechanism
No.
Description
A
Slewing cushion valve
B
Slewing motor
C
Slewing reducer
D
Slewing bearing
Check Oil Level in Slewing Reducer
The slewing reducer with inappropriate gear oil level will
lead to reduced machine performance and even compo-
nent damage. It’s recommended to check the oil level in
slewing reducer every 3 months or after 250 working
hours.
1. Open the left turntable cover to locate the slewing
reducer.
2. Remove the oil filler plug from the reducer, and
check the oil level, which should be even with the oil
port.
3. Remove the oil inlet plug from the brake, and check
the oil level, which should be even with the oil port.
4. Add oil as needed, until the oil level is even with the
oil port.
Fig 8 Position of slewing reducer oil ports
Table 5-4 Description of slewing reducer oil ports
No.
Description
1 Brake oil inlet
2 Oil filler
3 Oil outlet
A
B
C
D
3
4
1
2
1
2
3