Belt Tension Adjustment; Wing Deck Clutch Adjustment - Toro Groundsmaster 455-D Service Manual

Belt Tension Adjustment

Each cutting unit drive belt is individually tensioned by
a self tensioning spring loaded idler. When the idlers are
properly adjusted, the black plastic sleeve should be
flush (even) with the edge of the idler support. When
1/2" of the plastic sleeve is exposed, an adjustment is
required. To assure proper operation of the cutting unit,
check adjustment of spring loaded idler after first 10
hours of operation and every time maintenance on the
belt is required.
1. Lower cutting unit to the shop floor. Remove belt
covers from center and wing cutting units.
2. Measure the length of the exposed black plastic
sleeve. If distance is 0 to 1/2", spring loaded idler is
properly adjusted and belt tension is correct. If dimen­
sion is not correct, proceed to next step.
3. Loosen (2) flange head nuts securing idler adjust or
tube to top of cutting deck.
4. Loosen jam nut on adjusting screw and rotate screw
until the black plastic sleeve is flush (even) with the edge
of idler support.
5. When distance is attained, tighten jam nut on adjust­
ing screw and (2) flange head nuts securing idler ad ­
juster tube to top of cutting deck.
6. Check adjustment on other adjusters and repeat
procedure if required.

Wing Deck Clutch Adjustment

The deck clutches are adjustable to ensure proper
engagement and blade braking.
1. To adjust clutch, tighten or loosen locknuts on flange
studs.
2. Check adjustment by inserting feeler gauge through
slots next to flange studs.
3. The proper disengaged clearance between the clutch
plates is 0.011 - 0.021 inches. It will be necessary to
check this clearance at each of the three slots to ensure
the plates are parallel to each other.
Adjustments
0 - 1/2"
1
Page 8 - 8
2
3
Figure 11
1. Spring loaded idler
2. Idler support
3. Black plastic sleeve
1
2
Figure 12
1. Clutch
2. Flange studs
Groundsmaster
®
455-D