Bedknife Replacement And Grinding; Bedknife Regrinding - Toro Reelmaster 5500-D Service Manual

Bedknife Replacement and Grinding

1. Remove bedbar from cutting unit.
2. Remove bedknife screws and remove bedknife
(Fig. 28).
3. Remove all rust, scale and corrosion from bedbar sur-
face before installing new bedknife.
4. Install new bedknife:
A. Make sure bedbar threads are clean. If neces-
sary, use 5/16−18 UNC 2A tap to clean threads.
B. Use new screws. Apply anti-seize lubricant to
screw threads before installing.
C. Tighten screws to a torque of 250 - 300 in.lb. (288
- 345 KgCm). Use a torquing pattern working from
the center toward each end of the bedknife
(Fig. 28). DO NOT use an impact wrench.
5. Since there can be variations in the mounting surface
of the bedbar, a new bedknife will not be perfectly flat af-
ter it is installed. Because of this, it is necessary to back-
lap 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.
Regrinding Bedknife
Remove bedbar/bedknife assembly from cutting unit
before attempting to regrind a used bedknife. Keep the
bedknife fastened to the bedbar when grinding.
Note: When grinding, be careful to not overheat the
bedknife. Remove small amounts of material with each
pass of the grinder.
Bedknife Regrinding Specifications (Fig. 29)
Relief Angle
Relief Angle Range
Front Angle
Front Angle Range
Cutting Units
5_
3_ - 6_
15_
13_ - 17_
Page 8 - 20
Use a torque
wrench and
bedknife screw tool
7 5 3 1 2
Figure 28
Top Face
Relief Angle
Front Angle
Figure 29
4 6 8
Front
Face
Reelmaster 5500-D