MacDon 3020 Pull-Type Windrower - Manual (Page 83)

72
TROUBLE SHOOTING
SYMPTOM PROBLEM SOLUTION REF.
DRIVES
Sickle drive pounds
(continued).
Loose guards or
sections.
Tighten. 48
Sickle driving hard
(plugging).
Clean sickle.
Adjust sickle hold-
downs.
Replace worn parts.
29
50
---
Sickle running too fast. Install pulleys for correct
PTO speed.
7
Ragged cut stubble. Ground speed too fast. Reduce ground speed. 19
Sickle operating too
slow.
Maintain proper RPM on
PTO.
---
Install pulleys for correct
PTO speed.
7
Sections or guards worn
or damaged.
Replace and adjust. 48
Sections above guard
cutting edge.
Adjust sickle hold-
downs.
50
Excessive braking of
guards.
Float set too heavy. Tighten float springs. 42
Main drive belt whips
excessively and/or turns
over.
Loose belt.
Main drive idlers not
aligned with drive
pulley.
Tighten belt.
Adjust idler alignment.
Replace belt if it has
turned over.
47
46
47
Pulleys bent. Replace pulleys. 47
Shafts bent. Replace shafts. ---
Sickle loads excessive. Clean and adjust sickle.
Reduce ground speed.
48
19
PTO speed too high. Maintain proper RPM on
PTO.
Install correct pulleys for
PTO speed.
---
7