Nord Drivesystems B 1000 - Clean and Check Vent Screw; Replacing the Shaft Sealing Ring; Re-Lubrication of Bearings in the Gear Unit; General Overhaul

Gear units – Manual with installation instructions
50 B 1000 en-3921
5.2.9 Clean and check vent screw
1. Unscrew the vent screw.
2. Thoroughly clean the vent screw, e.g. with compressed air.
3. Check the vent screw and the sealing ring. If the sealing ring is damaged, use a new vent screw.
4. Screw the vent screw back in.
5.2.10 Replacing the shaft sealing ring
Once the shaft sealing ring has reached the end of its service life, the oil film in the region of the
sealing lip increases and a measurable leakage with dripping oil occurs. The radial shaft seal must
then be replaced. The space between the sealing lip and the protective lip must be filled
approximately 50 % with grease on fitting (recommended grease: PETAMO GHY 133N). Take care
that after fitting, the new radial shaft seal does not run in the old wear track.
5.2.11 Re-lubrication of bearings in the gear unit
NOTICE
Damage to the gear unit due to insufficient lubricant
There is a risk of bearing failure in the event of inadequate lubrication.
• It is essential to comply with the recommended intervals.
• Only use greases which are approved by Getriebebau NORD.
• Never mix different greases. If different greases are mixed, the gear unit may be damaged due to
inadequate lubrication caused by incompatibility between the different greases.
• Avoid contamination of the grease with foreign substances and washing out of the grease by
lubricating oil.
Please contact the NORD Service department for replacement of the grease in the roller bearings.
Recommended grease: Petamo GHY 133N - Klüber Lubrication. (see chapter 7.2.1 "Roller bearing
greases")
5.2.12 General overhaul
The general overhaul must be carried out by a specialist workshop with suitable equipment and be
qualified personnel with appropriate equipment in observance of national regulations and laws. We
recommend that the general overhaul is carried out by the NORD Service Department.
During general overhaul, the gear unit is completely dismantled. The following work steps are carried
out:
• All gear unit components are cleaned.
• All gear unit components are checked for damage.
• Damaged parts are replaced.
• All roller bearings are replaced.
• Replace all seals, radial shaft seals and Nilos rings.
• Optional: The back stop will be renewed.
• Optional: Replace the elastomers in the coupling.