MacDon 9352c SP - Manual (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.