Checking And Correcting Cutting Blade Mismatch - Toro 30582 Groundsmaster 580-D Operator's Manual

6. To install cutting unit, assemble in reverse order.
1
Figure 71
1. Deck cover
2. Gearbox plate
3. Deck pivot shaft
Checking and Correcting
Cutting Blade Mismatch
If there is mismatch between the blades, the grass will
appear streaked when it is cut. This can be corrected by
ensuring all blades are straight and cutting on the same
plane.
1. Adjust cutting unit to highest height–of–cut. Position
castor wheel axles in lower castor fork holes (Fig. 72
and 73). If checking front cutting unit, reposition two
rear castor's clevis pins to highest height–of–cut setting
(Fig. 72). On the front castors, move all castor spacers
to the underside of the castor arms (Fig. 72). To check
outboard units, move all castor shaft spacers to the
underside of the castor arms and castor wheel axles to
lower castor fork holes.
1
Figure 72
1. High range height-of-cut
5
4
3
2
4. Deck clevis
5. Lift bar
2
2. Move to highest
height-of-cut setting
1
1. High range height-of-cut
2. Move to underside of
castor arm
2. Place a flat 4 X 8 sheet of plywood at least 3/4 in.
(20 mm) thick down on a level surface and lower the
cutting unit onto the flat surface.
3. Rotate blade so ends face fore and aft. Measure from
flat surface to front tip of cutting blade and record
dimension. Rotate same blade so opposite end faces
forward and repeat measurement. Difference between
the two measurements must not exceed 1/8 in. (3 mm).
If difference exceeds 1/8 in. (3 mm), the blade is bent.
Replace it. Use same procedures to measure all blades.
4. Rotate blade so ends face fore and aft. Measure from
flat surface to front of cutting blade and record
dimension. Repeat process with all blades and compare
measurements. Maximum difference allowed between
any two adjacent blades is 1/4 in. (6 mm). Maximum
difference allowed between the highest and lowest
blade measurement is 3/8 in. (10 mm). If measurements
do not fit recommended standards, add shims between
the cutting deck and spindle housing; proceed to step 6.
If measurements meet standards, proceed to step 5.
5. Rotate blades so tips line up with one another. Tips of
adjacent blades must be within 1/8 in.(3 mm) of each
other. If tips are not within 1/8 in. (3 mm) of one
another, add shims between spindle housing and bottom
of cutter deck; proceed to step 6.
6. Remove locknuts securing spindle housing to deck in
area where shims are to be added. To lower a blade, add
a shim (Part No. 3256–24), to each mounting bolt,
between spindle housing and cutter deck. Repeat step 5.
Continue process until blade tips are within the required
dimensions.
55
2
3
Figure 73
3. Castor arm