Panther T14R - Operation and maintenance manual
CAB AND FRAME MAINTENANCE
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Clearance measurement
Figure 240
Comparator on slewing bearing
The best practice is to perform measurement once a
year. Always use the first measurement as a reference
to evaluate the wear of the slewing ring raceways and
its rolling elements. Normal limit of acceptable wear is
3 times the initial machine clearance.
Ensure the measurement is made under the same
conditions each time, otherwise the results are not
usable. The vehicle needs to be loaded, the load
should be the same, as much as possible, at each
measurement.
NOTE : To read the proper clearance value, install a
0.01 mm or 0.001 inch precision comparator close to
the slewing bearing, pointing to read vertical clear-
ance.
The comparator needs to be installed on the lifting side
of the vehicle, in line with the middle of the upper
frame.
Then, perform the following:
1.
Adjust the comparator to 0 mm or 0 inch for refer-
ence.
2.
Slowly lift the rear upper frame until the dial of the
comparator stop increasing or the undercarriage
starts to move up. Mark this value.
3.
Move down and ensure the reference is still at
0 mm. Repeat a second time to ensure the read-
ing is consistent.
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4.
Repeat all previous steps after rotating the upper
frame 90 degrees three times to obtain
4 measures. The comparator has to be reinstalled
at each rotation to follow the rear of the upper
frame.
Figure 241
Required four positions for the clearance measurement
Lifting the rear of the upper frame
Using a 20-ton floor jack and spacer block, place the
lifting point under the center of the rear beam. Stay out
of the way when lifting and do not go under the vehicle
when reading the value on the comparator.
Figure 242
Floor jack and rear of upper frame
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2
3
4
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