Macdon 9352c SP User Manual download pdf (Page 129)

Form # 147459 Issue 11/06 Web Rev_01

127

TROUBLE SHOOTING

SYMPTOM

PROBLEM

SOLUTION

REF

Header Drive

Sickle drive not

engaging (continued)

Appropriate solenoid not

being energized by

activating switch.

Check electrical

connections; repair or

replace solenoid.

*

Header drive belt

tension too low.

Check hydraulic

pressure at tensioning

cylinder. Should be

between 150 & 250 psi.

Check for plugged

orifice at cylinder.

If pressure is below 150:

1) Check charge

pressure

2) Repair/replace pump

---

---

96

*

Sickle drive engages

but lacks power.

Header drive belt

tension too low.

See "Sickle drive not

engaging" above.

---

Worn belt.

Replace belt.

92

Belt will not disengage.

Tensioning cylinder

front pivot bolt too tight,

preventing idler bracket

from rotating away from

switch.

Adjust locknuts to allow

free movement of

cylinder ram on bolt.

---

Rear lower belt support

pivot too tight,

preventing cylinder from

disengaging switch at

front.

Adjust locknuts to allow

free movement of

support on pivot bolt.

95

Belt has shrunk due to

over-heating when

disengaged, or

excessive slipping when

engaged.

Replace damaged or

worn belt. Adjust belt

guides and keepers.

Check hydraulic

pressure at tensioning

cylinder (see above).

96

Belt vibration.

Burnt spot or band cut

in one place.

Replace belt.

92

Band split full length of

belt.

Misalignment of pulleys.

Replace belt and adjust

pulleys.

92

Sections of band

missing from belt.

Misalignment of pulleys.

Replace belt and align

pulleys.

92

Idlers not square with

pulleys.

Align idlers.

93

* See your Windrower dealer.

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