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FEED RATE CONTROL
FEED RATE CONTROL WEAR
Indication of wear is apparent when the feed rate control makes a skipping or ratcheting
sound. The pump output is less than the desired setting.
GROOVE IN CAM
More cam is exposed to the rotation of the
lifter at lower dial ring settings leading to
cam wear and causing index malfunctioning.
Higher settings will reduce cam wear.
Inspect and replace cam as needed.
WORN LIFTER
If the lifter arm wears and flattens it may
not fully lift the pin out of the index plate.
The pin will make a ratcheting sound from
dragging across the plate. The feed rate
control will index inconsistently at different
settings. Replace the lifter as needed.
WORN INDEX PLATE
A worn cam or lifter can cause the index
pin to drag across the index plate and
elongate the holes. The pin will skip across
the holes and cause index malfunction.
The plate can be flipped to use the other
side, or it may be replaced. Remember to
grease with AquaShield
®
.
Corrective Action
To reduce wear on the feed rate parts,
specify the pump closest to its
maximum output capacity within the
needs of the application. Check the
lifter, cam and index plate during
scheduled maintenance.
USA and Canada 800.683.2378, International 904.641.1666.
Worn groove in
plastic cam
Flat area
Should look like this
Index plate with elongated holes
