Service Manual

Reelmaster 5500-DPage 8 - 20Cutting Units
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
5
Relief Angle Range
3 - 6
Front Angle
15
Front Angle Range
13 - 17
12468357
Use a torque
wrench and
bedknife screw tool
Figure 28
Relief Angle
Front Angle
Top Face
Front
Face
Figure 29