28
8. FAULT ISOLATION CONTINUED
8.2 SPREADING SYSTEM OPERATES INCORRECTLY
FAILURE MODE CAUSE OF PROBLEM CORRECTIVE ACTION
Spreader pattern is uneven or
spreader does not operate.
The gate opening in the bottom of
the hopper is blocked.
Remove the material from the
hopper and dislodge any clumps
around the gate opening. Inspect
the agitator wire and make sure
that it is not worn, damaged, or
missing.
The spread control bafe is posi-
tioned incorrectly.
Follow the procedure outlined
in Section 4.2 for centering the
spread pattern.
The input shaft of the spinner gear-
box is not turning.
Inspect the tension of the drive
belts. Make sure that the idler
pulleys are maintaining pressure
on the belts. Inspect the belts for
severe wear or damage.
The shaft coupler is loose. Make sure that the coupler con-
necting the spinner shaft to the
spinner gearbox is tightened cor-
rectly.
The spinner is dirty, worn or dam-
aged.
Inspect the spinner and clean or
replace if necessary.
The spinner clip is damaged or
missing.
Inspect the spinner clip on the bot-
tom of the spinner. If it is damaged
or missing, the spinner may not
spin even though the spinner shaft
is rotating. Replace the spinner clip
if necessary.