Troubleshooting - AIRLESSCO 3A1186A Operation - Repair - Parts

Troubleshooting

Troubleshooting
Problem
Unit doesn't prime
Unit primes but has poor or no
pressure
Unit does not maintain good
spraying pressure
16
General
Cause
Airleak due to loose suction nut
Airleak due to worn o-rings
Hole in suction hose
Stuck or fouled balls
Pressure set too low
Filter(s) are clogged
Outlet valve fouled/worn.
Prime/pressure relief valve
bypassing
Packings and/or piston worn
Blown spray tip
Packings and/or pistons worn
Upper seat worn
Solution
Tighten suction nut.
Replace o-ring (108526) on suction seat and
suction hose (331290), if so equipped.
Service outlet valve suction assembly.
Turn up pressure.
Clean or replace gun filter, inlet filter, and/or
manifold filter.
Service outlet valve.
Clean or replace prime valve.
Tighten packing nut, repack unit.
Replace spray tip.
Repack unit.
Replace upper seat.
3A1186A