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Istruzioni per installazione ed uso
10.1.2 Replacement procedure of external sealing rings
Locate the seal to be replaced and proceed as follows:
Drain oil (refer to section OIL CHANGE PROCEDURE);
Remove the sealing ring taking the utmost care not to cause any kind of damage to the seat and to the shaft
(scratches, dents, etc.);
Always use new seals, and in case of the same brand of those removed;
Before assembly, the new ring should be greased on the lip (the one with double lip TC also in the space between the two
sealing lips); this lip must slide always on a protection if on the shaft there are slots for keys and/or grooves for elastic
rings (e.g., spinner, ...); the grease used must be clean and free of dust, shavings and other impurities, the recommended
grease to be used is AGIP-MU EP 2 (for sealing rings with double lip in FPM use the special grease TECNOLUBE BC 101);
Be careful not to match the position of the lip in the same position of the seal lip just gotten off;
Never insert any kind of lubricant in the outer area of the oil seal as it would facilitate its release, and make sure that
the housing is clean and free of grease.
Note, in case of presence of external VRM ring (see the figure below):
Proceed to the installation of oil sealing rings, following the directions above, after having disassembled the VRM.
While disassembling be careful not to damage the shaft;
After the installation of the oil sealing rings, fit the outer VRM ring with the following precautions;
Fill with grease the volume between the oil sealing ring and the VRM;
Make sure that the rubber lip of the VRM enters, uniformly, in contact with the sealing ring;
Ensure that the metal ring of the VRM does not touch the oil sealing ring.
Additional procedures for ATEX units:
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Clean the surface of the gear reducer with materials that do not generate electrostatic discharges;
After 24-hour check for leaks, in the case of oil leakage contact a Motovario Technical Service
authorised for ATEX maintenance.
QL0214 ∕ REV.6
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