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Reassembly
To reassemble the pump lower and air motor, reverse
the steps on the preceding pages. Follow the torque
requirements listed in the Parts - Model 295616 draw-
ing on page 16.
Troubleshooting
Problem
The pump fails to operate
The pump operates, but the output is
low on both strokes.
The pump operates, but the output is
low on the downstroke.
The pump operates, but the output is
low on the upstroke.
Erratic or accelerated operation.
Pump slowly moves after fluid shutoff
in downstroke.
Pump slowly moves after fluid shutoff
in upstroke.
311882C
Cause
Dirty or worn air motor.
Inadequate air supply or restricted
lines.
Closed or clogged air valves.
Clogged fluid hose or valve.
Worn or damaged valves or seals.
Clogged fluid hose or valve.
Exhausted fluid supply.
Worn or damaged valves or seals.
Held open or worn intake valve.
Worn or damaged valves or seals.
Held open or worn piston valve.
Worn or damaged valves or seals.
Exhausted fluid supply.
Broken air motor compression spring. Replace the spring.
Clogged or dirty intake valve check
ball.
Worn or damaged valves or seats.
Clogged or dirty lower piston ball or
seat.
Worn or damaged valves or seats.
See Air Motor Repair, step 2 and step 3 (F
and F
. 12) for special notes on reassembly.
IG
Clean, service
Clean lines or increase the air supply
(see Technical Data).
Open or clear the valves.
Clear the hose or valves
Service the valves or seals.
Clear the hose or valves.
Refill the fluid supply and reprime the
pump.
Service the valves or seals.
Clear or service the valve.
Service the valves or seals.
Clear or service the valve.
Service the valves or seals.
Refill the fluid supply and reprime the
pump.
Clean ball and seat.
Install repair kit.
Clean ball and seat.
Install repair kit.
Reassembly
. 11
IG
Solution
15
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