Toro Greensmaster e1021 Service Manual page 176

Grinding the Bedknife (continued)
DPA Cutting Units: Service and Repairs
g227152
1. Service limit (reel contacts back of bedknife scallop during operation)
2. Service limit (bottom of bedknife scallop reached when grinding)
Do not grind the bedknife below it's service limit; refer to
Operating the cutting unit with the bedknife below the service limit
may result in poor after-cut appearance and reduce the structural
integrity of the bedknife.
The bedknife service limit occurs when the reel contacts the back of the bedknife
scallop during operation. Check for reel contact marks at the back of the bedknife
scallop prior to grinding. The bedknife service limit may also occur when the
bottom of the bedknife scallop is reached when grinding the bedknife.
When grinding the bedknife, be careful to not overheat the bedknife. Remove
small amounts of material with each pass of the grinder. Also, clean and dress
grinding stone often during the grinding process.
EdgeMax® bedknives are extremely hard. Using a diamond grinding
wheel is recommended to prevent overheating or damaging the
bedknife edge while grinding.
Because the top grind angle on bedknives is critical for edge retention, and
therefore after−cut appearance, Toro has developed special service tools for
accurately measuring the top grind angle on all bedknives; refer to
Indicator and Magnetic Mount (page
1. Use Toro General Service Training Book, Reel Mower Basics (part no.
09168SL) and grinder manufacturer's instructions for bedknife grinding
information.
2. After grinding the bedknife, install the bedbar assembly in the cutting unit;
refer to Installing the Bedbar (page
Note: Always adjust the cutting unit after grinding the reel and/or bedknife;
refer to the Cutting Unit Operator's Manual. If a properly adjusted cutting unit
does not cut paper cleanly after grinding, the grind angle may be incorrect.
To extend the cutting unit performance by allowing the reel and the bedknife
to hold their edge longer, an additional adjustment may be required after the
first few minutes of operation as the reel and bedknife conform to each other.
Figure 103
IMPORTANT
IMPORTANT
2–15).
7–8).
Page 7–14
Figure 103.
Angle
Greensmaster ® e1021/e1026
20246SL Rev A