34
6.2 Replacing the shaft seal
For the identification of parts see the drawings at pages 37 and 38 .
Disassemble the drive
Empty the lubricating oil out of the sump 12A
Warning : Dispose the used oil in accordance with local regulations
Disassemble the sump 12A
Clean the housing of any residues and/or deposits.
Replace the seal ring pos. 43
Reassemble the sump 12A
Refill the sump 12A with new lubricating oil as per paragraph 6.1.2
Couple the motor as shown in paragraph 4.4.1 o 4.4.2.
6.3 Cleaning of compression chamber
Clean the internal surface of the chamber and the surface of the rotors from any deposits and rust by using
solvents and a scraper
Warning : Keep to prescribed safety rules when using solvents and wear protection glasses
and safety gloves
Note : Do not damage the internal surface of the chamber and the surface of the rotors surface
when using the scraper.
6.4 Check of the gear clearance
For the identification of parts see the sections at pages 37 and 38.
Empty the lubricating oil out of the sump 12B
Warning : Dispose the used oil in accordance with local regulations
Disassemble the gear sump 12B
Measure the clearance between the gear teeth according to the attached table 264468 . In order to do this
secure one of the gears and rotate the other until there is no contact.
Reassemble the sump 12B
Refill the sump 12B with new lubricating oil as shown in paragraph 6.1.2
Send the table 264468 filled out with measured clearances to ROBUSCHI. (or any authorized distributor) for
their review.
6.5 Check of the rotors clearance
Disassemble the inlet piping
Insert gauges into the inlet opening to measure the clearance of the rotors in various positions, turning the
drive shaft by hand according to the attached table 264468.
Warning : During this operation pay attention to rotors, which can cause the squeezing of the
finger and hands.
Reassemble the inlet piping together with the silencer if present
Send the table filled out with measured clearance to ROBUSCHI (or any authorized distributor) for their
review.
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