Husqvarna K7000 Ring Workshop Manual page 10

7 REPLACING ENGAGEMENT AND SUPPORT ROLLERS
IMPORTANT!
Worn engagement and support rollers
have a smaller diameter than new rol -
lers. Unscrew the adjuster screws two
turns if only one type of roller is to be
replaced, and four turns if all rollers are
to be replaced before the cover is fitted.
10
Grease – characteristics
The grease used in the service procedures set out below must be stiff and
afford good resistance to water penetration.
The original grease used during assembly in the factory is Shell Alvania RL3
(lithium grease), where the figure '3' indicates the NLGI grade of the grease. If
you opt to use a different brand, the grease used must be of the same NLGI grade.
(The NLGI grade indicates the stiffness of the grease. The higher the NLGI
grade, the stiffer the grease.)
Replacement of engagement rollers
Remove the blade as specified in Chapter 4.
Remove the knobs
Force off the knobs from the snap fasteners by unscrewing the knobs past the
end stop. Unscrew the knobs.
Checking, cleaning
Push or pull off the bearing holders.
Defective bearing holders (wear/corrosion damage) are best replaced with
new bearing holders complete with bearings.
Replace defective bearings as specified in Chapter 8.
Clean old grease from the bearing housing.
Wipe the bearing holders and make sure they are free from damage.
Check that the roller bearing feels intact.
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!