Troubleshooting
3A0732U 15
Pump operates, but output is low
on downstroke.
Held open or worn ball check valves
or piston packings.
Clear valve; replace packings. See
page 17.
Erratic or accelerated pump
speed.
Exhausted fluid supply. Refill and prime.
Held open or worn ball check valves
or packings.
Clear valve, replace packings. See
page 17.
Fluid being pumped is visible in
the packing nut wet-cup.
Worn throat packings. Tighten packing nut.
Replace throat packings. See page
17.
Bad spray pattern. Clean or repair spray gun or tip. See manual 3A8099.
Problem Cause Solution
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