Clutch Disassembly and Inspection (Fig. 20)
Insert clutch alignment tool (see Special Tools) in fly-
wheel pilot bearing hole to keep clutch disk from falling
off (Fig. 21).
3. Install pressure plate. Install and tighten six cap
screws and lock washers a little at a time, working in a
diagonal sequence. Torque screws from 5 to 7 ft--lb (7 to
1.
9
N--m). Remove alignment tool from flywheel bearing.
2.
Loosenpressureplatescrews(Item 10)inadiagonal
sequence.
Clutch Alignment Tool
3.
Remove cap screws, washers (Item 11) and pres-
sure plate (Item 12), then slide out the transaxle main
shaft and remove clutch disk (Item 13). Note orientation
of clutch disk as it is removed (Fig. 22).
4.
wear and uneven height. Replace if wear is evident or if
height difference exceeds 0.020 in. (0.5 mm).
Inspect diaphragm spring end of pressure plate for
Figure 21
5.
Check pressure plate surface for wear, cracks and
color change.
Clutch Disc
6.
Check strap plate rivets for looseness and replace
pressure plate if loose.
7.
tact, deterioration due to seizure, adhesion of oil or
grease. Replace clutch disk if damaged.
Checkclutchdiskfacingforlooserivets,unevencon-
Engine
Pressure
Plate Side
Flywheel
Side
8.
Measure rivet sink and replace clutch disk if out of
specification (Fig. 24).
Clutch disk thickness
standard value
0.307 to 0.339 in. (7.8 to 8.6
mm)
Figure 22
Clutch disk rivet sink
0.012 in. (0.3 mm) minimum
Pressure plate
9.
Check for torsion spring play or damage. 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.
Diaphragm spring
Torsion spring
11.
Inspect flywheel surface for stepped wear, streaking
or seizure. Replace if necessary. Clean any oil or rust
fromflywheelsurfacewithlightabrasive.Checkflywheel
runout and replace if runout exceeds 0.005 in. (0.13
mm).
Figure 23
Rivet sink
12.Inspect
flywheel pilot bearing for wear or damage
and replace if necessary.
Installing Clutch Disk and Pressure Plate
1.
use a brush to rub it in. Wipe off any excess grease.
Apply a coating of grease to clutch disk spline, then
2.
Use clutch alignment tool (see SpecialTools) toposi-
tion clutch disk on flywheel.
Figure 24
Workman 3000/4000 Series
Page 6 -- 21 Rev. C
Drive Train
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