2-S14
L2800, L3400, WSM
CLUTCH
Checking Pressure Plate Assembly and Flywheel
1. Wash the disassembling parts except clutch disc with a suitable
cleaning solvent to remove dirt and grease before making
inspection and adjustment.
2. Check friction surface of pressure plate and flywheel for scoring
or roughness.
- Slight roughness may be smoothed by using fine emery cloth.
- If these parts have deep scores or grooves on their surface,
they should be replaced.
3. Inspect the surface of the diaphragm spring for wear.
If excessive wear is found, replace clutch cover assembly.
4. Inspect thrust rings (wire ring) for wear or damage.
As these parts are invisible from outside, shake pressure plate
assembly up and down to listen for chattering noise, or lightly
hammer on rivets for a slightly cracked noise. Any of these
noises indicates need of replace as a complete assembly.
W1014308
Pressure Plate Flatness
1. Place a straight edge on the pressure plate and measure
clearance with a feeler gauge at several points.
2. If the clearance exceeds the allowable limit, replace it.
3. When the pressure plate is worn around its outside and its inside
surface only is in contact with the straight edge, replace even if
the clearance is within the allowable limit.
W1017610
(2) Dual Stage Clutch (L3400)
Backlash between Clutch Disc Boss and Shaft
1. Mount the PTO clutch disc to the 16T gear shaft.
2. Hold the gear 16T gear shaft so that it does not turn.
3. Rotate disc lightly and measure the displacement around the disc
edge.
4. If the measurement exceeds the allowable limit, replace.
5. perform measurement for the traveling clutch disc and the main
shaft in the same way as a above.
W1016866
Diaphragm spring
mutual difference
Allowable limit
0.5 mm
0.020 in.
Clearance between
pressure plate and
straight edge
Allowable limit
0.2 mm
0.008 in.
A : Inside B : Outside
Backlash
(Displacement around
disc edge (PTO))
Allowable limit
2.0 mm
0.079 in.
Backlash
(Displacement around
disc edge (Travelling))
Allowable limit
2.0 mm
0.079 in.
Tractor Manuals Scotland - Please Do Not Copy
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