Yanmar YM155 - Page 150

Remedy
Replace.
Replace.
Replace.
Adjust or replace.
Replace.
4. CLUTCH AND RELATED ITEMS
I I
/ Oil adhered to friction disc. 1 Clean
Probable cause
1. Faulty brake shoe springs; excessive
wear; uneven wear.
2. Uneven brake drum wear; foreign
matter infiltrated into drums.
3. Excessive wear of brake shaft rod.
1. Faulty parking brake lever, claws
worn.
1. Return spring.
1. Return sprlng worn or damaged.
Trouble
3. Release sleeve bearing seized.
I I
/ Friction disc worn. I Replace.
3.
4.
5.
6.
Remedy
Replace.
Adjust.
Replace.
No clearance between release
lever and release bearing.
2. Clutch rod:
1. Return spring worn or damaged.
Vibration can be
felt through the
brake pedals.
Parking brake does
not work.
Parking brake does
not return when
re
leased.
Brake pedals do not
return.
Probable cause
1. Friction disc scored or burned.
2. No effective clutch rod stroke.
Trouble
2.1 clutch slius. I I. clutch:
Adjust.
7.
Adjust.
Replace.
Clutch does not
disengage.
not
reNrn.
4. / Power transmission 1 1. Friction late:
I I isenough. I unevenwear of facings. / Replace.
5. Pedals are loose.
I---
Torsion springs worn or damaged.
2. Flywheel:
Face is rough and uneven.
1. Rod shaft "0 rings worn:
Rod is bent.
1. Main drive shaft or s~lines worn.
6.
2. Friction disc loose (from rivet
sections.
3. Flywheel and nut loose.
Strange noises heard
from the vicinity
of
clutch (when em
gaged)
Replace.
Replace.