Graco T2 User Manual

Reassemble the Air Motor and the Pump Lower
311882U 21
Reassemble the Air Motor and the Pump Lower
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
drawing on page 22.
NOTE: See Repair the Air Motor, page 16, step 4 and
step 5 (F
IG. 12) for special notes on reassembly.
Troubleshooting
1. Follow Pressure Relief Procedure, page 14,
before checking or repairing pump.
2. Check all possible problems and causes before
disassembling pump.
Problem Cause Solution
The pump fails to operate Dirty or worn air motor. Clean, service
Inadequate air supply or restricted
lines.
Clean lines or increase the air
supply (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 low on both strokes.
Clogged fluid hose or valve. Clear the hose or valves.
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 low on the downstroke.
Held open or worn intake valve. Clear or service the valve.
Worn or damaged valves or seals. Service the valves or seals.
The pump operates, but the output
is low on the upstroke.
Held open or worn piston valve. Clear or service the valve.
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 in downstroke.
Clogged or dirty intake valve check
ball.
Clean ball and seat.
Worn or damaged valves or seats. Install repair kit.
Pump slowly moves after fluid
shutoff in upstroke.
Clogged or dirty lower piston ball or
seat.
Clean ball and seat.
Worn or damaged valves or seats. Install repair kit.

Graco T2 Specifications

General

Brand	Graco
Model	T2
Category	Water Pump
Language	English