Toro Greensmaster 3120 Service Manual page 272

Servicing the Rear Roller Brush (with or without a belt driven groomer) (continued)
DPA Cutting Units: Service and Repairs
Contact with the reel or other cutting unit parts can result in personal
injury. Use heavy gloves when handling the cutting reel.
Replacing the Roller Brush Element
1. Remove the cutting unit from the machine and place it on a level work
surface.
2. Loosen the set screw in the bearing locking collar on right side of brush shaft.
3. Using the blind hole in the bearing locking collar as an impact point, unlock
the collar by striking it with a punch in the opposite direction of brush rotation.
4. Remove the RH brush support, bearing and locking collar.
5. Remove the brush element from the shaft.
6. Slide the new brush element onto the shaft while rotating the brush.
7. Install the J-bolts and lock nuts making sure the threaded portion of the
J-bolts are installed on the outside of the brush element. Tighten the lock
nuts from 2.3 to 2.8 N∙m (20 to 25 in-lb).
8. Install the RH bearing support.
9. Tighten the bearing locking collar.
A. Slide the locking collars outward onto the bearing collars. Rotate the
locking collars by hand in the direction of normal brush rotation until the
collars are tight on the shaft.
B. Using the blind hole in the bearing locking collar as an impact point, lock
the collar by striking it with a punch in the normal direction of the brush
rotation.
C. Tighten the set screw in the locking collar.
If brush to roller contact is incorrect, brush operation will be
adversely affected.
10. Check that the roller brush is parallel to the rear roller within 0.25 mm (0.010
inch) clearance to light contact. Adjust the roller support or drive plate
as necessary.
Replacing the Drive Belt
1. Remove the cover.
2. Loosen the idler pulley assembly from the drive plate to relieve the belt
tension.
3. Replace the drive belt making sure that the belt and the pulley grooves are
aligned and the belt is centered in the pulleys.
4. Push down on the idler pulley and secure it to the drive plate. Make sure
the cover plate (item
entering the drive area.
CAUTION
IMPORTANT
7 in Figure 130) is positioned to prevent debris from
Page 7–36 Greensmaster 3120
17230SL Rev C