MacDon A40-D User Manual
Page 186

SECTION 8 TROUBLESHOOTING
169000 / 169040
184
Revision E
SYMPTOM PROBLEM SOLUTION
SECTION
Knocking In Sickle Drive.
Worn needle bearing in sickle 
head. 
Replace.
7.8.4
Worn sickle head pin.
7.8.3
Incorrect end guards.
Replace with special end 
guards. 
7.8.7
Header Turns While 
Unloaded But Slows Or 
Stops When Starting To Cut. 
Cold oil in system.
Reduce ground speed until 
oil reaches operating 
temperature. 
---
Sickle Back Breakage.
Dull sickle.
Replace.
7.8.4
Worn sickle head pin.
7.8.3
Bent or broken guard.
Straighten or replace.
7.8.7
Incorrect end guards at sickle 
head. 
Replace with correct number 
of special guards. 
Windrower Side Drift.
Header is dragging on one end 
and pulling to that side. 
Adjust skid shoes to prevent 
cutterbar dragging. 
6.17.8.4
Adjust header flotation.
6.17.10
Low tire pressure on one side 
(pull-type). 
Check and correct tire 
pressure [30 psi (207 kPa]). 
7.14.4
Lights Malfunctioning.
Improper ground.
Check for proper grounding 
between light base and 
header. 
7.17
Burned out bulb.
Replace bulb.
Poor connection.
Check connector at 
tractor/windrower. 
6.4.3
