M
AINTENANCE
& I
NSPECTION
C
HAPTER
9
9-21
THP 94/42 R 4 XXT
THP 125/42 R 4 XXT
THP 140 H/42 R 4 XXT
GB-07.2005
3
1
A
2
Fig. 9.10 Slewing gearbox
9.6.4
In-line filter cartridge
If the manometer (Item 1, Fig. 9.9) shows a value in excess
of 3 bar when the oil is at operating temperature, the filter
element must be changed:
1.
Turn the filter cartridge (
2
) anti-clockwise by hand to
undo it, and dispose of it correctly.
2.
Wet the sealing ring of the new filter cartridge with oil
and screw it in clockwise by hand.
3.
Check the in-line filter for leak-tightness.
9.7
Changing the oil
9.7.1
Changing the oil in the slewing
gearbox
NOTE:
墌
The slewing gearbox has only one oil circuit (oil circuit A).
墌
Use only gear oil as shown in the gear oil reference table Fig. 9.6.
Use oil grades / alternative grades as shown in the gear oil reference table Fig. 9.6. Oil capacity 10 litres.
To change the oil in the slewing gearbox, proceed as
follows:
1.
Remove the breather screw (
1
) and fully remove the drain
plug (
2
).
2.
If the oil was very dirty, it is essential to fill the gearbox
completely with flushing oil, and slew the distributor
boom for several rotations. This ensures that any
deposits of dirt in the gearbox are fully mixed into the
oil; after this, repeat point 1.
3.
Reinsert the drain plug.
4.
Open the air bleed screw (
3
). Use a funnel to fill the
gearbox with oil through the breather screw opening
until the oil reaches level
A
.
5.
Screw in the air bleed screw and the breather screw.
1
2
CLOSE
OPEN
Fig. 9.9 Changing the in-line filter
