Graco 295616 important safety instructions Reassembly, Troubleshooting, Problem Cause Solution

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 18.

Reassembly

NOTE: See Air Motor Repair, step 3 and step 4 (FIG. 12) for special notes on reassembly.

Troubleshooting

Problem	Cause	Solution
The pump fails to operate	Dirty or worn air motor.	Clean, service
	Inadequate air supply or restricted	Clean lines or increase the air supply
	lines.	(see Technical Data).
	Closed or clogged air valves.	Open or clear the valves.
	Clogged fluid hose or valve.	Clear the hose or valves
	Worn or damaged valves or seals.	Service the valves or seals.
The pump operates, but the output is	Clogged fluid hose or valve.	Clear the hose or valves.
low on both strokes.
	Exhausted fluid supply.	Refill the fluid supply and reprime the
		pump.
	Worn or damaged valves or seals.	Service the valves or seals.
The pump operates, but the output is	Held open or worn intake valve.	Clear or service the valve.
low on the downstroke.
	Worn or damaged valves or seals.	Service the valves or seals.
The pump operates, but the output is	Held open or worn piston valve.	Clear or service the valve.
low on the upstroke.
	Worn or damaged valves or seals.	Service the valves or seals.
Erratic or accelerated operation.	Exhausted fluid supply.	Refill the fluid supply and reprime the
		pump.
	Broken air motor compression spring.	Replace the spring.
Pump slowly moves after fluid shutoff	Clogged or dirty intake valve check	Clean ball and seat.
in downstroke.	ball.
	Worn or damaged valves or seats.	Install repair kit.
Pump slowly moves after fluid shutoff	Clogged or dirty lower piston ball or	Clean ball and seat.
in upstroke.	seat.
	Worn or damaged valves or seats.	Install repair kit.

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