Classic Series
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24
TROUBLESHOOTING – FEED RATE CONTROL
PROBLEM
POSSIBLE CAUSE
SOLUTION
Dial ring will not turn
Seized or broken variable cam
Apply Aquashield
™
to variable cam &
cam slot in feed rate control housing
Seized dial ring
Clean then lubricate dial ring & cam slot
with AquaShield
™
Dial ring turns,
Variable cam disengaged from
Re-insert 90˚ end into ring
output doesn’t change
dial ring
Broken variable cam
Replace variable cam
Pump head does not rotate
Worn index plate
Turn over or replace index plate
Motor problem
Refer to Motor section
Pump head roller assembly stripped
Replace roller assembly
Index pin holder loose
Tighten holder into spider assembly
Index pin broken
Replace index pin and lifter assembly
Pump head rotates continuously
Variable cam out of place or worn
Replace or re-insert variable cam
Ratcheting sound
Index plate worn
Turn over or replace index plate
Variable cam worn
Replace variable cam
Lifter worn
Replace lifter or complete spider assembly