Troubleshooting - Graco Husky 1050 Repair Parts

Troubleshooting

Troubleshooting
Problem
Pump cycles but will not prime.
Pump cycles at stall or fails to hold
pressure at stall.
Pump will not cycle, or cycles once
and stops.
Pump operates erratically.
8
Cause
Pump is running too fast, causing
cavitation before prime
Check valve ball severely worn or
wedged in seat or manifold.
Seat severely worn.
Outlet or inlet clogged.
Inlet or outlet valve closed.
Inlet fittings or manifolds loose.
Manifold o-rings damaged.
Worn check valve balls, seats, or
o-rings.
Air valve is stuck or dirty.
Check valve ball severely worn and
wedged in seat or manifold.
Pilot valve worn, damaged, or
plugged.
Air valve gasket damaged.
Check valve ball is wedged into seat
due to overpressurization.
Dispensing valve clogged.
Air tubing is plugged
(remote air control models).
Clogged suction line.
Sticky or leaking check valve balls.
Diaphragm (and backup) ruptured.
Restricted exhaust.
Pilot valves damaged or worn.
Air valve damaged.
Air valve gasket damaged.
Air supply erratic.
Exhaust muffler icing.
Solution
Lower air inlet pressure.
Replace ball and seat. See page 14.
Replace ball and seat. See page 14.
Unclog.
Open.
Tighten.
Replace o-rings. See page 14.
Replace. See page 28.
Disassemble and clean air valve.
See page 11. Use filtered air.
Replace ball and seat. See page 14.
Replace pilot valve. See page 15.
Replace gasket. See page 10.
Install pressure relief kit. See Acces-
sories, page 32.
Relieve pressure and clear valve.
Clear tube.
Inspect; clear.
Clean or replace. See page 14.
Replace. See page 15.
Remove restriction.
Replace pilot valves. See page 15.
Replace air valve. See page 10.
Replace air valve gasket. See
page 10.
Repair air supply.
Use drier air supply or use low ice
muffler (Graco part 102656).
313435ZAA