Bosch Rexroth ROTATRAC eGFT 8000 10 Series Manual page 60

60/64 Troubleshooting and fault correction
Bosch Rexroth AG, ROTATRAC eGFT 8000 general operating instructions series 10, RE 79088-01-B/02.2019
Table 7 ROTATRAC eGFT 8000 malfunction table
Malfunction
Changed gearbox noises
Noises
The operating temperature
is substantially higher than
normal
Leaking oil
Lubricating oil is foaming
Decreasing or non-existent
brake action
Possible cause
Damaged gears
Bearing play
Bearing defective
Gearbox fastening has
become loose
The oil level is too high or
too low
Fault in the oil cooling
system
The lubricating oil is too
old or badly contaminated
Faulty drive or output
seal.
Seals on partition seams
or on the locking screws
are defective
Incompatibility of the
filled in lubricating oil
with the oil remains or
the preservation oil of the
planetary gearbox.
Defect / faulty setting of
external oil pump
Thermal overload of the
multiple-disk brake
Remedy
Notify Customer Service.
Check toothed components for flaws
such as pittings.
Let the damaged parts be replaced
by Rexroth Service.
Notify the Rexroth Service.
Tighten screws with the required
tightening torque.
Allow the planetary gearbox to cool
down to approx. 50°C.
Check the oil filling level.
If required, fill with lubricating oil or
drain off lubricating oil if oil level is
too high.
Check in the operating instructions
of the system, machine or vehicle
when the last oil change took place,
if appropriate proceed to an oil
change. Proceed as described in
chapter 10.2 "Inspection".
Check seals as far as possible,
replace if necessary.
If the leak cannot be eliminated,
Rexroth Service must be notified.
Replace the lubricating oil and rinse
with appropriate purging oil.
Check the oil pump (not included in
the Rexroth scope of supply)
Contact the Rexroth Service.
Let trained staff or Rexroth Service
employees carry out an inspection
on the multiple-disk brake. Replace
the disks, springs and sealing
elements.