Even after the warranty period has expired, you should still arrange for faults to be rectified by
Flender Customer Services.
Note
Loss of warranty
You will invalidate the warranty for the gear unit if you modify it in any way without seeking the
approval of Flender beforehand, or if you do not use original spare parts.
Only use original spare parts from Flender. Always arrange for Flender Customer Services to
repair any faults that develop while the unit is still under warranty.
Possible faults and their rectification
The following table provides you with an overview of possible faults and indicates how they
can be rectified.
Table 8-2 Possible faults and their rectification
Possible faults Causes Possible remedies
Pressure monitor trig‐
gers an alarm
(For gear units with
pressure lubrication or
air‐oil cooler).
Oil pressure < 0.5 bar
● Check the oil level at room temperature
● Top up with oil if necessary
● Check the oil pump
● If required, replace the oil pump
● Check the oil filter and coarse filter
● If required, replace the oil filter or clean the coarse filter
Grease escaping at
the output shaft
Defective rotary shaft sealing rings
● Inspect the rotary shaft seals and replace if necessary
Noise
Damage to gearing
● Contact Customer Services
● Inspect toothed components
● Replace damaged components if necessary
The bearing play is excessive.
● Contact Customer Services
● Adjust bearing play
Defective rolling-contact bearings
● Contact Customer Services
● Replace defective rolling-contact bearings
Gear unit fastening has worked
loose
● Tighten bolts and nuts to the specified tightening torque
● Replace damaged bolts and nuts
Outer surface of gear
unit soiled with oil
Inadequate sealing of the housing
cover or joints
● Seal housing cover or joints
Labyrinth seals soiled with oil, incor‐
rect transport position
● Check oil filling
● Clean the labyrinths
Servicing
8.4 Possible faults
Gear unit 5118en
Operating Instructions 10/2017 91
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