SECTION 4
4-52
SLEWING BEARING TEETH -
GREASING
The slewing bearing teeth and the slewing gearbox
pinion, are enclosed into a housing filled with
grease.
Disassemble the cover (2) by untightening the
screws (3).
Check the presence of possible damages on the
pinion teeth.
Check the grease filling.
The height of the grease filling in the tank must be of
about 13 mm (0.51 in) on WX 145 and WX 165
excavators and of 20 mm (0.79 in) on WX 185 exca-
vators.
If this is not the case, add grease.
Check that water is not penetrated. You can recog-
nize this event by the fact that grease becomes
lighter. Great quantities of water create some bags,
that have absolutely to be cleared, by draining or
sucking the water.
Check the teeth coating and the seal of the upper
structure rotor. If there are leaks or damages, water
could penetrate or cause breaks or grease leaks.
These troubles have to be cleared immediately.
Replace the gasket (1) and reinstall the cover (1) by
fixing it with screws (3).
SLEWING GEARBOX - SCREWS
TIGHTENING CHECK
The fastening screws (1) of the slewing gearbox (2)
on the upper structure are tightened at prescribed
tightening torques.
The loose screws have to be completely loosened
and then tightened at the prescribed tightening
torque by means of a torque wrench.
WX 145 = 270 Nm (199.14 lbf·ft)
WX 165 - WX 185 = 250 Nm (184.39 lbf·ft)
S WARNING S
Perform the upper structure slewing only after
ensuring that nobody is staying in the slewing
range.
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