Operating and servicing instructions
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12 Servicing and inspection
Malfunctions that are caused by inadequate or improper maintenance can result in high repair costs
and unnecessarily long gearbox down times. Regular servicing and inspection work are therefore
imperative.
All servicing and repair work is only allowed to be performed with the gearbox stationary and by
trained, authorized and appropriately instructed personnel. It is imperative that all safety instructions
(section 3) are observed.
12.1 Servicing table
Work to be performed
Frequency
Comment
Check the oil temperature
daily
Excessively high temperatures are a sign of
malfunctions or damage to the gearbox or the oil
system. They reduce the service life of the oil and
can result in the premature failure of the gearbox
Check the noise made by
the gearbox for changes
daily
Changes in the noises made by the gearbox can
be indicative of damage to the parts inside the
gearbox
Check the oil level
weekly
An oil level that is too low can result in inade-
quate lubrication of the gearbox and thus to fail-
ure of bearings or gears
Check the gearbox for
leaks
monthly
Leaks that go unnoticed can result in inadequate
lubrication
First oil change
after approx. 250
operating hours
See section 12.3
Subsequent oil change
every 4000 to
8000 operating
hours, at the
latest however
after 12 months
See section 12.3
Visual inspection of the
gears
quarterly
The visual inspection of the gears can be per-
formed by removing the inspection hole covers.
In case of damage or irregularities, the manu-
facturer must be consulted
Check used oil for foreign
bodies and coloration
quarterly
Unusually high quantities of foreign bodies, e.g.
metal particles can be indicative of damage.
Coloration is a sign of reduced quality oil
Clean the air filter
quarterly
Regular cleaning with suitable cleaning agents
prevents clogging of the filter
Check the oil filter
quarterly (daily
with autom. dis-
play)
Unusually high quantities of foreign bodies, e.g.
metal particles can be indicative of damage, it is
then necessary to replace the filter
Check the oil viscosity class before every oil
change
The viscosity is to be found on the rating plate
and the gearbox data sheet
Clean the gearbox housing
after every oil
change
Prevents premature aging and undesirable corro-
sion
Check all fastening bolts
annually
Checking all fastening bolts for tightness in-
creases safety and reliability
Service the complete gear-
box
Every 2 years
Regular servicing by Henschel Industrietechnik
after sales service enables worn parts to be re-
placed in a timely manner and thus ensures long
gearbox service life