Note:
The lapping solution must be kept in free
flowing condition to get even distribution on the
bedknife and reel.
The lapping procedure is as follows:
1.
Adjust the bedknife to the reel so that light
contact is evident.
2.
Operate the lapping machine so that the reel
turns in a reverse direction. Apply lapping
solution continuously and maintain light
bedknife-to-reel contact.
3.
Stop the lapping machine periodically to check
the cutting surfaces for sharpness. Continue
lapping until the sharp cutting edges have been
restored.
Note:
If the cutting edges are severely rounded,
both sharpening and lapping may be required.
4.
Wash off all the lapping solution. Using paper,
check for sharpness along the entire length of
each reel blade. If the paper cannot be cut
cleanly along the entire length of each reel
blade, continued lapping is necessary.
Replacing the Bedknife
1.
To replace the bedknife, remove the 11 screws
holding the knife to the bed bar.
2.
Remove the rust, scale, and corrosion from the
bedbar surface and apply a thin layer of oil to
the bedbar surface.
3.
Clean the screw threads.
4.
Apply anti-seize compound to the screws and
install the bedknife to the bedbar as follows
(
):
g282051
Figure 18
1.
Bedbar
3.
Screw
2.
Bedknife
A.
Torque the 2 outer screws to 1 N∙m (10
in-lb); refer to
.
B.
Working form the center of the bedknife,
torque the screws to 23 to 28 N∙m (200 to
250 in-lb); refer to
g282050
Figure 19
1.
Bedknife screw tool
3.
Torque to 23 to 28 N∙m
(200 to 250 in-lb).
2.
Install and torque these
first to 1 N∙m (10 in-lb).
5.
True the bedknife attached to the bedbar
by grinding. Refer to the Toro Manual for
Sharpening Reel and Rotary Mowers, Form No.
09168SL
13
