MAINTENANCE PROCEDURES
TB24 Plus&26J Plus Maintenance Manual 5-35 © Jun 2022
2. Place a suitable vessel under the bolt as indicated
by the arrow in the figure.
3. Remove the bolt as indicated.
4. Fully drain the drive reducer gear oil to the vessel.
5. Mount back the loosened bolt.
6. Drive the machine to rotate the reducer until one
bolt is at top and the other is at 90 degrees.
Figure 5-52
7. Remove the #1 and #2 bolts as indicated.
8. Add new gear oil to the port #1 until the oil level is
even with that of the port #2.
9. Mount back the bolts.
10. Clean up the oil spills in performing the inspection
procedure.
11. Perform the same procedure on all drive reducers
of the machine.
D-2 Replace Slewing Reducer Gear Oil
Regularly replacing slewing reducer gear oil is vital to
good machine performance and extending reducer
service life.
1. Open the left side cover of turntable, and locate the
slewing reducer.
2. Place a suitable vessel under the drain plug of the
slewing reducer.
3. Remove the drain plug.
4. Fully drain the slewing reducer gear oil to the
vessel.
5. Mount back the drain plug.
6. Remove the fill plug (for the location, reference B-
12 Inspect Slewing Reducer Oil Level, page 5-
23), add new gear oil to the fill port until the oil level
is even with the bottom of the fill plug.
7. Mount back the fill plug.
8. Clean up the gear oil spills in performing the
inspection procedure.
D-3 Replace Hydraulic Oil
Regularly replacing hydraulic oil is vital to good
machine performance and extending service life.
Unqualified cleanliness of oil may cause the machine to
perform poorly and continued use may result in
hydraulic component damage. Particularly harsh
working condition requires the oil changes to be
performed more frequently.
BURN HAZARD
Before servicing the hydraulic
system, allow the hydraulic oil to
cool down to room temperature.
NOTICE
The inspection must be performed with the engine in
off position.
When removing the hose and fittings, the O-rings on
the hose and fittings must be replaced.
1. Open the left side cover of turntable, and locate the
hydraulic tank.
2. Close the hydraulic shutoff valve located on the
side of hydraulic tank.
3. Remove the drain plug at the bottom of the tank,
and completely drain the oil into a suitable vessel.
For the capacity of hydraulic tank, please reference
Machine Specifications, page 2-1.After the oil is
completely drained, re-install the drain plug.
HIGH PRESSURE HAZARD
Slowly remove the hydraulic
elements to reduce the oil
pressure. High oil pressure may
penetrate the skin. Should any
injury occur, go to a doctor at
once.
4. Disconnect and plug the suction hoses.
5. Disconnect and plug the return hoses.
6. Remove the retaining bolts from the hydraulic tank
cover, and remove the hydraulic tank cover.
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