Zenit Group | 04 May 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