Bedknife Replacement And Grinding - Toro Reelmaster 5200-D Service Manual

Bedknife Replacement and Grinding

Replacement
1. Remove bedbar (see Bedbar Removal and Installa-
tion).
2. Remove bedknife screws and remove bedknife.
3. Remove all rust, scale and corrosion from bedbar
surface before installing the new bedknife.
4. Install new bedknife as follows:
A. Make sure bedbar threads are clean.
B. Use new bedknife screws (Toro Part No.
57-4910). Apply anti-seize lubricant to the screw
threads before installing.
IMPORTANT: Do not use an air or manual impact
wrench.
C. Bedknife screws must bottom out on the bed-
knife, not the bedbar. Tighten screws to a torque of
180 to 200 in-lb (20.3 to 22.6 N-m); work from the
center toward each end of the bedbar (Fig. 27)
NOTE: Since there can be variations in the mounting
surface of the bedbar, a new bedknife will not be perfect-
ly flat after it is installed. Because of this, it is necessary
to backlap or grind a new bedknife after installing it to the
bedbar. Follow the existing angle that was ground into
the bedknife and grind only enough to make sure the top
surface is true.
NOTE: For proper grinding of bedknife, follow proce-
dures in the Toro Sharpening Reel and Rotary Mowers
Book, Part No. 80300SL.
Note: When grinding, be careful to not overheat the
bedknife. Remove small amounts of material with each
pass of the grinder.
Note: If the height of cut is a 1/2 inch or lower on the
cutting unit, the front angle can be increased to 30_ for
improved performance.
Bedknife Regrinding Specifications
Relief Angle
Relief Angle Range
Front Angle
Front Angle Range
5. Grind bedknife.
6. Install bedbar (see Bedbar Removal and Installa-
tion).
Cutting Units
(Model 03506, S/N 80001 - 209999999)
(Model 03509, S/N 80001 - 209999999)
5_
3_ to 6_
15_ (see Note above)
13_ to 17_
Page 8 - 18
Rev. A
7 5 3 1
Figure 27
Relief Angle
Front Angle
Figure 28
Reelmaster 5200-D/5400-D
2 4 6
Top Face
Front
Face