DeWalt Graco PowerFill 3.5 Standard 26B417, Operation, Parts

Page: 28 / 40

Troubleshooting
28 3A8110C
Equipment runs with
intermittent flow
Inlet filter is clogged. Remove filter and clean.
Inlet valve is stuck open.
Remove and clean inlet to allow
for proper functionality
Inlet is not installed or loose.
Check inlet and ensure it is fully
installed.
Damaged inlet flapper valve.
Remove inlet and check flapper
valve for damage and replace if
necessary.
Faulty outlet flapper valve.
Remove cylinder or piston to
check piston flapper valve for
damage, or obstruction.
Too thick of material.
Thin material or use a different
material.
Equipment runs but no material
comes out
Pump is not primed.
Pour some water down outlet to
wet the seals.
Ensure pump is assembled
properly with throat seal, piston
seal, and inlet housing installed.
Piston isn't properly connected
to ProConnect.
Ensure piston is properly
assembled into slider, see Pro
Connect Removal and
Assembly , page 25.
Pump is starting to get worn out.
Inspect seals and replace if
necessary.
Material is too thick.
Thin material or use a different
material.
Material leaks around box filler
Internal o-ring failed or is
missing.
Install or replace if necessary.
Hard to install and remove
attachments to unit
O-rings dried out from joint
compound/pumping fluid.
Lubricate o-rings, see Box
Filler , page 13.
Power Head ProConnect won't
go together
Piston and slider and pins are
not properly aligned.
See ProConnect Operation, see
Pro Connect Removal and
Assembly , page 25.
Pins or mating holes have
contamination on them from
dried material.
Clean parts, lubricate, and
reassemble.
Pins or holes are bent.
Try to straighten out pins or
replace drive housing. See
Parts , page 32.
Problem Cause Solution