Toro Greensmaster eTriFlex 3360 Service Manual page 311

Grinding the Bedknife (continued)
Greensmaster® eTriFlex 3360 and 3370
19239SL Rev B
Do Not grind the bedknife below it's service limit. 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; refer to
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.
g227152
1. Service limit (reel contacts back of bedknife scallop during operation)
2. Service limit (bottom of bedknife scallop reached when grinding)
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. fter 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.
IMPORTANT
Figure 156. Check for reel contact marks at
Figure 156
IMPORTANT
2–16).
7–7).
Page 7–13
Angle
DPA Cutting Units: Service and Repairs