5. Service and Maintenance
www.nord.com B1000 -23-
Danger!
Warning: Hot oil!
3. Drain all the oil from the gear unit.
4. If the screw lock coating of the oil drain screw or oil level screw is damaged in the
thread, a new oil level screw must be used or the thread cleaned and coated with
securing lubricant, e.g. Loctite 242, Loxeal 54-03 prior to inserting. The seal ring must be
replaced if damaged.
5. Support the seal ring, insert the oil drain screw into the hole and tighten to the correct
torque! (See Section 6.2 for torque values)
6. Using a suitable filling device, refill with oil of the same type through the oil level hole
until oil emerges from the oil level hole. (The oil can also be filled through the pressure
vent screw or a sealing plug located higher than the oil level). If an oil level vessel is
used, fill the oil through the upper inlet (thread G1¼) until the oil level is set as described
in Section 5.2.
7. Wait at least 15 minutes, or at least 30 minutes if an oil level tank is used, and then
check the oil level. Proceed as described in Section 5.2.
Note!
The oil does not need to be changed on gear units without oil level screw (see Section 6.1).
These gear units are lubricated for life.
Standard helical gear units have no oil level screw. Here, the oil is topped up through the
pressure vent bolt using the quantities listed in the table in Section 6.5.
General overhaul
The gear units must be completely dismantled The following work must be carried out:
Clean all gear unit components
Examine all gear unit components for damage
All damaged components must be replaced
All roller bearings must be replaced
Replace back stops if fitted
Replace all seals, radial seals and Nilos rings
Replace plastic and elastomer components of the motor coupling
The general overhaul must be carried out by a specialist workshop with appropriate equipment
and qualified specialist personnel. We recommend that the general overhaul is carried out by the
NORD service department.
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