John Deere RG5500 Lawn Mower User Manual


 
14
ALIGNMENT GAUGE
A properly ground reel should be cylindrical. All taper
must be ground out of the reel. To ensure the reel will
be ground correctly it MUST be aligned precisely prior
to grinding. The digital alignment gauge is used for
accurate reel setup. The gauge is used for setting the
horizontal alignment and checking for taper within
thousands of an inch. The digital gauge allows you to
measure one end of the reel by extending the slide rail
until you make contact with the center shaft of the reel.
See FIG. 8. By measuring at the far left and the far right
on the center shaft you can adjust the horizontal
alignment using the front tooling adjustment knobs until
the alignment is within .005 inches [.13mm].
When this is completed, you can then reset the gauge
to zero on the center shaft, retract the gauge slide
and measure the outer surface of a reel blade. By
comparing the readings on the left side of the reel to
the right side of the reel, you can determine exactly how
much taper you have in the reel. Compensating for
taper will be explained later in the grinding procedure.
NOTE: The gauge can be set for both inch and metric
readout.
FIG. 8
GETTING TO KNOW YOUR GRINDER (Continued)
REEL CENTER SHAFT
INDICATOR SLIDE RAIL
IN / mm
ZERO RESET
ON/OFF