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23
OPERATING INSTRUCTIONS (Continued)
RELIEF GRIND
To change over to the relief grind, disengage the spin grinding wheel
hub assembly and park it as far to the right as possible. Bring the
relief hub assembly over to the reel for relief grinding. This will
require repositioning the travel proximity switch brackets.
Note: As the reel diameter gets smaller and the number of blades
increases the relief grinding wheel diameter works better when
smaller. For example a 5" [127 mm] diameter greensmower reels
with 11 blades achieve a greater relief angle with a smaller grinding
wheel.
REEL SPIRAL
Check to see if your mowing unit is normal or reverse helix.
NOTE: As you look into the guide finger on THE NEXT PAGE, IT
SHOWS THE NORMAL REEL HELIX. As you look into the guide
finger on the FOLLOW PAGE, IT SHOWS THE REVERSE
REEL HELIX. The high point of the relief finger is on the right hand
side of the grinding wheel.
Most mowing units are normal helix.
THE HIGH POINT OF THE RELIEF FINGER MUST
ALWAYS BE AT THE CORNER OF THE GRINDING WHEEL
THAT IS MAKING CONTACT WITH THE REEL. ON THIS
GRINDER THAT IS ALWAYS THE RIGHT HAND SIDE OF
THE GRINDING WHEEL.
WHEEL DRESSING
If the grinding wheel becomes loaded with material it may be
necessary to dress the wheel. The RG5500 is supplied with a
diamond dresser. To use, place the dresser on the spin drive
horizontal arm in the area where the wheel is to be dressed.
Adjust the dresser to the appropriate position and angle. Raise
the grinding wheel so it is nearly touching the dresser.
For dressing the spin grinding wheel, put the dresser in the straight
position. Close the doors and infeed the spin grinding wheel into
the dresser and then move the grinding wheel side to side against
the dresser which will dress the full face of the wheel.
Typically only infeed .002" [.05 mm] per pass. Infeeding too heavy
can damage the dresser or the wheel. Continue dressing until the
wheel looks new or the proper shape is achieved.
For dressing the relief wheel, put the dresser at the correct angle
for normal helix reel or reverse helix reel. Close the doors and
infeed the relief grinding wheel into the dresser. Do NOT move
the grinding wheel from side to side.
!
FIG.23