Page Number - 8
Form 422891
PILE DRIVER
®
III PUMP ASSEMBLY
MODELS 84900, 84901 and 84902
TROUBLESHOOTING
Problem
Possible Cause
Solution
Pump does not operate.
Restricted or inadequate air supply.
Check air supply pressure and air hose
diameter (see Airmotor manual for
minimum air supply hose diameter).
Obstructed material output.
Check output line for restrictions.
Erratic or accelerated operation.
Pump is not primed.
Prime pump (see "Pump Priming"
instructions).
Insufficient material supply.
Refill material supply.
Material is too heavy for priming.
Decrease output with material valve.
Increase pressure to pressure primer (if
in use). Check for inlet restrictions.
Pump operates on "down" stroke only Worn or damaged piston u-cup (Item 17) Check and replace if needed.
(missing "up" stroke).
or piston check (Items 19 and 20).
Pump operates on "up" stroke only
Worn or damaged inlet check (Items 29
Check and replace if needed.
(missing "down" stroke).
and 30) or priming rod packing (Item 27).
Insufficient material supply. Pump is not
Check inlet for restrictions. Decrease
intaking enough material to dispense on
output with material valve.
both strokes.
Pump is operating but not dispensing Inlet check (Items 29 and 30) is not
Check and replace if needed.
material.
seating or is damaged.
Americas:
One Lincoln Way
St. Louis, MO 63120-1578
USA
Phone +1.314.679.4200
Fax +1.800.424.5359
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D-69183 Walldorf
Germany
Phone +49.6227.33.0
Fax +49.6227.33.259
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#01-65 German Centre
Singapore 609916
Phone +65.562.7960
Fax +65.562.9967
© Copyright 2007
Printed in USA
Web site:
www.lincolnindustrial.com