Toro Groundmaster 31900, Service Manual

Page: 291 / 355

Removing the Lift Arms (continued)
4. When removing the right side lift arm, carefully remove the cutting unit high
trim height switch sensing plate from the lift arm.
CAUTION
Each lift arm weighs approximately 27 kg (60 lbs).
5. Support the lift arm and remove the lift arm pivot pin. Remove the lift arm
from the machine.
6. Check the pivot pin and lift arm bushings for damage or wear and replace
as necessary.
7. Continue to disassemble the lift arm as necessary.
Installing the Lift Arms
1. Tighten the bumper pad mounting screws until the screw head is flush with
the surface of the pad.
2. Lightly grease and install the spherical bearing and shoulder bolt in the front
lift arm hub if previously removed. Tighten the flange nut from 114 to 135
N·m (84 to 100 ft-lb) .
3. Use an arbor press to install new flange bushings in the rear lift arm hub
if necessary.
4. Lightly grease the lift arm pivot pin. Position the lift arm in the machine and
install the pivot pin and pivot pin fasteners.
5. Lightly grease the lift cylinder pin. Support the lift arm and the lift cylinder and
install the cylinder pin and cylinder pin fasteners.
6. When installing the right side lift arm, carefully install the cutting unit high
trim height switch sensing plate to the lift arm. Check and adjust the cutting
unit high trim height switch clearance; refer to
Adjusting the Cutting Unit
High Trim Height Switch (page 6–34) .
7. Install or check and adjust the height of cut (HOC) chain U-bolts as shown in
Figure 130 .
g314384
Figure 130
Groundsmaster ® 3200, 3300 and 3310 Page 7–31 Chassis: Service and Repairs
19240SL Rev A