Toro Workman 3000 Series Service Manual page 259

Clutch Disassembly and Inspection
1. Insert special tool (or transaxle main shaft) in flywheel
pilot bearing hole to keep disk from falling off.
2. Loosen clutch cover capscrews (Item 10) in a diago-
nal sequence.
3. Remove capscrews, washers (Item 11) and clutch
cover (Item 12), then pull out the special tool and remove
clutch disk (Item 13).
4. Inspect diaphragm spring end of cover for wear and
uneven height. Replace if wear is evident or height differ ­
ence exceeds the limit.
Height difference
5. Check pressure plate surface for wear, cracks and
color change.
6. Check strap plate rivets for looseness and replace
clutch cover assembly if loose.
7. Check clutch disk facing for loose rivets, uneven con­
tact, deterioration due to seizure, adhesion of oil or
grease. Replace clutch disk if damaged.
8. Measure rivet sink and replace clutch disk if out of
specification.
Clutch disk thickness
standard value
Clutch disk rivet sink
9. Check for torsion spring play or damage and replace
clutch disk if necessary.
10. Install clutch disk on transaxle main shaft. Make sure
clutch slides freely on splines of shaft. Check for exces-
sive play in rotating direction.
11. Inspect flywheel pilot bearing (Item 14) for wear or
damage and replace if necessary. Inspect flywheel sur­
face for scratches and cracks. Clean any oil or rust off
surface with a light abrasive.
Installing Clutch Disk and Cover
1. Apply a coating of grease to clutch disk spline, then
use a brush to rub it in. Wipe off any excess grease.
2. Use special tool (or transaxle main shaft) to place
clutch disk on flywheel.
3. Install clutch cover assembly. Tighten capscrews a
little at a time, working in a diagonal sequence.
Clutch cover capscrew torque
Workman 3000/4000 Series
0.5 mm (.020 in.) maximum
7.8 – 8.6 mm (.307 – .339 in.)
0.3 mm (.012) minimum
7.0 – 9.0 Nm (5 – 7 ft–lb)
Page 6 – 21
Figure 33
Pressure plate
Torsion spring
Figure 34
Figure 35
Special tool
(or transaxle main shaft
Figure 36
Special tool
(or transaxle main shaft
Diaphragm spring
Rivet sink
Drive Train