Care and Maintenance 7
TC29
77
7.9.15 Swing bearing
Lubrication of toothing
• The grease nipple (66/1) mounted in the
driver’s cab lubricates the toothing of the ring
gear via a nozzle tube (66/2).
• To this purpose, slowly slew the uppercarriage
and lubricate it thoroughly at the same time
using a grease gun.
Lubrication of bearing races
• The bearing races are lubricated via the
lubricating nipples (66/3) mounted on the ring
gear.
• Slowly slew the uppercarriage, and lubricate it
thoroughly until the gasket has a collar (66/4)
of fresh grease.
Check secure fastening of swing bearing
When mounting for the first time, the
screws must again be checked after 100
operating hours.
The following points are prerequisites for an
optimum bolted connection on the undercarriage
and the uppercarriage:
• The contact faces of bolts must be of bright
metal, i.e. absolutely free from grease and
paint.
• The thread and the bolt head shall not be
damaged.
Damaged screws must be replaced by
new ones!
All accessible screws must be examined to
ensure that they are tightened to the torques
specified in Figure 67.
Checking the swing gear attachment
All accessible screws must be examined to
ensure that they are tightened to the torques
specified in Figure 67.
A = uppercarriage
B = undercarriage
C = drill hole (x2) (below plastic plug)
HR14-03-66
4
243
1
Fig. 66-Ring gear
HR14-03-67
M = 115 Nm
A
M = 25 Nm
A
M = 290 Nm
A
M = 115 Nm
A
A
B
C
Fig. 67-Swing bearing
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