Bleed Speed Control System - Toro Workman HDX Auto Service Manual

Bleed Speed Control System

The speed limiter cover assembly is used on the Work-
man Auto vehicle to adjust the maximum opening of the
primary clutch moveable sheave. The speed limiter con-
trol uses a manually operated hydraulic cylinder to
change the location of the piston in the speed limiter cov-
er assembly. The piston location determines the maxi-
mum primary clutch opening. If the speed limiter cover
assembly is removed or disassembled, use the following
procedure to bleed the speed control system for proper
operation.
1. Park vehicle on a level surface, shut engine off, re-
move key from ignition switch and apply parking brake.
2. Remove knobs from speed range lever and hydraulic
lift lever on seat base console (Fig. 15).
3. Remove six (6) washer head screws that secure con-
trol plate to seat base console. Lift control plate from seat
base to access the speed control system reservoir
(Fig. 16).
IMPORTANT: Use DOT 3 brake fluid in the speed
control system.
4. Bleed speed control system:
NOTE: Make sure fluid level is maintained in speed
control reservoir at all times during bleeding process.
Also, clean reservoir around cap area before remov-
ing cap from reservoir.
A. Move speed range lever between all positions (A
through D and T) three (3) or four (4) times which will
cause piston in speed limiter assembly to move and
properly fill speed control system with fluid.
B. After bleeding the speed control system, make
sure that fluid level in reservoir is correct.
5. After speed control system bleeding, install control
plate to seat base and secure with six (6) washer head
screws. Install knobs to speed range lever and hydraulic
lift lever.
Drive Train
3
1. Speed range lever
2. Speed range settings
3
1
1. Speed control reservoir
2. Reservoir cap
Page 4 − 14
1
Figure 15
3. Hydraulic lift lever
2
Figure 16
3. Speed range lever
Workman HDX Auto
2