9
REPLACEMENT OF ENGAGEMENT AND SUPPORT ROLLERS
Remove the worn-out
parts
Lift off the engagement rol-
ler.
Clean and grease the
engagement roller’s seat.
Remove the worn-out parts
After removing the hex-head screw,
take off the worn part.
Clean and grease the engagement
roller’s seat. (The grease prevents
penetration of concrete slurry.)
Fit the new parts
Insert the new engagement roller
into place, attach the lock-nut and fit
a
new hex-head screw with
thread-lock
. Press in the lock-nut
against the disc so it locks the shaft
and tighten the screw against the nut.
Place the disc against the tool in the
vice and
tighten the hex-head
screw securely
.
Fit the new parts
Use a
new hex-head screw
with thread-lock
during
fitting. Press in the lock-nut
and tighten the screw
against the nut.
Place the disc against the box
spanner in the vice and
tighten the hex-head
screw securely.
Bearing housing
Old model
Grease the bearing housing
Grease the bearing housing
thoroughly. Be particularly careful to
ensure that the front sealing ring
(arrow) is properly greased.
Grease the knob’s thread too.
New model
Fit the bearing housing
Tighten the knob a few turns. Press
in the bearing housing into the knob’s
snap-in fastener.
Then unscrew the knob to its end
position. Fit the blade and adjust the
rollers as per chapters 4 and 5.
Grease the bearing housing
The knob must be tightened!
Place the grease gun against the
nipples (A) and pump in grease until
clean grease appears from the out-
lets (B).
!
7
A
A
B
B
Fit the bearing housing
Press in the complete bearing hous-
ing with the long groove in line with
the stop screw hole.
Fit the knob and tighten it so far
that the flange (arrow) aligns with
the stop screw’s hole. Tighten the
stop screw by hand until it bottoms
out. Then tighten fully.
Now screw the knob to its end
position. Fit the blade and adjust the
rollers as per chapters 4 and 5.
