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8.5
Checking the gearbox for leaks
Note
From the inherent principle of operation, oil mist can escape from the vent valve or a
labyrinth seal.
Oil or grease escaping in small quantities from the shaft sealing ring should be regarded as
normal during the running-in phase of 24 hours operating time.
If the quantities escaping are significant or leaking continues after the running-in phase, the
shaft sealing ring must be replaced to prevent consequential damage.
Table 8- 8
Status
Film of moisture
on the shaft
sealing ring
Leakage at the
shaft sealing ring
BA 2030
Operating Instructions, 11/2017, A5E37880173A/RS-AE
ATEX version gearboxes
Shaft sealing rings are subject to natural wear. The service life depends on the
operating conditions.
Include the shaft sealing rings in periodic maintenance and servicing work on the
system.
Description and measures
Description
Film of moisture as a
result of the inherent
principle of operation
(apparent leakage)
Identifiable small trickle,
formation of drops, also
after the running-in
phase
8.5 Checking the gearbox for leaks
Measures
Remove using a clean
cloth and continue to
observe.
Replace the sealing
ring, determine the
possible cause of the
sealing ring failure and
rectify.
Service and maintenance
Notes
This does not represent a
fault; frequently, in the
course of operation, the
sealing ring dries off.
During the run-in period, the
shaft sealing ring beds into
the shaft. A visible track can
be seen on the shaft.
Optimum preconditions for a
perfect seal are obtained
after the run-in period.
83
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