Replacing Engagement And Support Rollers - Husqvarna K6500 Ring Workshop Manual

7

REPLACING ENGAGEMENT AND SUPPORT ROLLERS

12
Support rollers
Checking
Make sure that the roller bearings are intact – the rollers must rotate easily,
with a smooth motion and no play.
The support rollers are mounted on arms which change position when
adjusting the roller. Make sure that the arms can move, and that there is no
play in the attachments.
A defective bearing arm is best replaced with a complete new bearing arm
with pre-installed bearings. Replace defective bearings as specified in Chapter 8.
Replacement of support rollers
Secure the tool in a vice
The easiest way to remove the roller is to put a box wrench in a vice.
Lock the carrier with box wrench and remove the nut.
Never put the roller in the vice!
When the nut is removed, lift off the carrier and roller. Also lift off the cover
washer.
Clean the grooves in the sealing collar. Steel wire or string can be used as
cleaning tools. The grooves and the conical inner of the roller helps prevent
slurry from entering the centre.
Lubricate
Clean and apply grease to the radial seal.
Fit the cover washer. Note that it is to be turned with the deeper part inwardly
towards the wear ring shaft.
Lubricate the support roller seat.
Fit the roller – 18 Nm/13 lbf·ft.
Fit the roller, and align the carrier to the profile on the shaft.
Lock the carrier and screw down the nut on this by hand.
Tighten the nut, 18 Nm, with the same method used when removing (wrench
in the vice).
18 Nm