泽尼特集团 | 04 5月 2021

UNIQA CHOPPER DRY

PTFE V-ring assembly CHOPPER mod. DRY vers.

Clean the surface with compressed air
Insert the O-ring in the seat of the shaft and apply plenty of grease
Tack the lock dowels at the stop bushing
Apply a few drops of Loctite 243 threadlocker or equivalent to the dowels
Insert the stop bushing into the drive shaft and position it correctly with the block
Tighten the lock dowels of the stop bushing
Thoroughly clean the stop bushing removing any leaked threadlocker
Gently squeeze the lower lip of the V-ring for easy insertion using a smooth, rounded tool
Moisten the lower bearing flange with alcohol and position the V-ring in place with the block
Apply a generous amount of grease to the V-ring and O-ring of the lower bearing flange
Using a dial gauge attached to the pump plate, check that the eccentricity value of the stop bushing is less than 0.1 mm
Thoroughly clean the stop bushing and the shaft to remove any residue
Use the tapered insert to insert the V-ring without damaging its rubber edges
Insert the lower bearing flange in the seat and position it correctly with the block
Remove the conical insert
Lock the bearing flange with the circlip
Position the device for the pressure test and secure it by tightening the screw
Connect compressed air to the connection and perform the leak test at a pressure of approx. 2 bar

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