Replacement Of Engagement And Support Rollers - Husqvarna K3600 Mk II Workshop Manual

REPLACEMENT OF 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 guard is fitted.
Grease – characteristics
The grease used in the service proce-
dures set out below must be stiff and
afford good resistance to water pene-
tration.
The original grease used during
assembly in the factory is Shell
Alvania RL3 (lithium grease), where
Engagement rollers
Remove the support roller guard
and the blade.
Unscrew the knob.
Inspection, cleaning
Pull or press out the bearing
bracket.
Clean the bearing housing.
Wipe the bearing bracket and
check that it is not damaged.
Inspect the engagement roller
bearings.
Replace engagement
rollers
Secure the tool in a vice
Lock the nut using the box
spanner and unscrew the socket
head cap screw.
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 stiff-
ness of the grease. The higher the
NLGI grade, the stiffer the grease.)
Engagement rollers
Remove the support roller guard and the
blade.
When replacing the engagement roller,
the bearing bracket assembly must be
removed for inspection and service.
Force the knob from the snap-on fastener
by screwing the knob past the end stop.
Unscrew the knob.
Inspection, cleaning
Pull or press out the bearing bracket.
If the bearing bracket is defective
(wear/corrosion damage), the simplest
thing to do is to replace the entire bea-
ring bracket assembly with bearings.
Replace the bearings as described in
Chapter 8.
Clean all traces of old grease from the
bearing housing.
Wipe the bearing bracket and check that
it is not damaged.
Check the integrity of the engagement
roller bearings.
Replace engagement rollers
Secure the tool in a vice
The simplest way of removing the wear
part is to place a box spanner in a vice.
Lock the nut using the spanner and
unscrew the socket head cap screw.
Never put the roller in the vice!
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