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8. Check visually whether e.g. water, metal particles or mud are in the drained
lubricating oil.
9. In case of important contamination, find out the cause before refilling. Contact
the Rexroth Service located in your area, for the address refer to appendix
A "Address directory" in the material number-specific operating instructions.
10. If the lubricating oil is contaminated, flush the lubricating oil system carefully
before filling the planetary gearbox with new lubricating oil.
11. Dispose of this drained lubricating oil in accordance with local country
regulations.
12. Check whether the seals on the screw plug threads of bore 5 and bore 6 are still
in perfect condition and can be reused. Replace the damaged seals.
13. Seal bore 5 and bore 6 with the corresponding screw plugs.
14. Then fill the planetary gearbox with clean lubricating oil according to the
selection list – industrial gear oils. Proceed as described in chapter 8.1.3 "Filling
the planetary gearbox with lubricating oil".
procedure
Performing the lubricating oil change - K model:
f Observe the information on the planetary gearbox dimensioned drawing in
appendix D "Technical data / Drawings" of the material number-specific
operating instructions.
• Bore 10: for filling or checking the lubricating oil
• Bore 9 for draining the lubricating oil
1. Put the planetary gearbox out of service. Proceed as described in the machine/
vehicle operating instructions.
2. Check the oil level as described in chapter 10.2.2 "Checking the oil level of the
planetary gearbox".
3. Turn the planetary gearbox as shown in the figure on the left:
Bore 9 in 6 o'clock position.
4. Place a catch basin with sufficient capacity under the planetary gearbox.
5. Loosen the screw plugs of the bore 10 slowly, so that any existing pressure can
be released.
6. Then remove the screw plugs from bores 10 and 9.
7. Drain the lubricating oil completely in the catch basin.
8. Check visually whether e.g. water, metal particles or mud are in the drained
lubricating oil.
9. In case of important contamination, find out the cause before refilling. Contact
the Rexroth Service located in your area, for the address refer to appendix
A "Address directory" in the material number-specific operating instructions.
10. If the lubricating oil is contaminated, flush the lubricating oil system carefully
before filling the planetary gearbox with new lubricating oil.
11. Dispose of this drained lubricating oil in accordance with local country
regulations.
12. Check whether the seals on the screw plug threads of bore 9 and bore 10 are
still in perfect condition and can be reused. Replace the damaged seals.
13. Seal bore 9 and bore 10 with the corresponding screw plugs.
14. Then fill the planetary gearbox with clean lubricating oil according to the
selection list – industrial gear oils. Proceed as described in chapter 8.1.3
"Filling the planetary gearbox with lubricating oil".
Servicing and repair | HyDrotrAC GFt >130 knm
CorreCtion Copy 1 |17.10.2019 | onLy For internAL USe
RE 79094, Issue 10.2019, Bosch Rexroth AG
49/64
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