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Maintenance
Follow these procedures when encountering problems indicated
in the troubleshooting section.
Removing and Cleaning the Inlet Valves
1. Be certain that the sprayer is off.
2. Remove the inlet valve assembly using a 27 millimeter
socket or box end wrench.
3. Test movement of the valve by pushing on it from the
open end of the valve housing with a screwdriver or the
eraser end of a pencil. It should move about 1/16 of an
inch. If it does not move, it should be cleaned or replaced.
NOTE: The inlet valve must be oiled after every job.
This will reduce or eliminate priming problems
thenexttimethesprayerisused.
4. Thoroughly clean the valve assembly with water or the
appropriate solvent. Use a small brush.
5. If you have properly cleaned the valve and water drips out
of the bottom, the valve is worn and needs to be replaced.
A properly seated valve lled with water and held vertically
will not drip.
6. Install a new or cleaned valve in the pump block and then
ll the valve with light oil or solvent.
Removing and Cleaning the Outlet Valve
It may be necessary to remove and clean the outlet valve or to
replace parts inside the valve worn out through normal use.
1. Remove the outlet valve body with a wrench.
2. Remove and clean the ball stop and small spring inside
the valve using a wire hook or tweezers. Replace the
spring if it is broken or worn.
NOTE: Thisspringismanufacturedtoaveryspecic
tension. Do not put in an unauthorized
substitute. See the paint pump assembly
parts diagram for the proper replacement part
number.
3. Remove the seat and ball assembly.
4. Clean all parts thoroughly. If the ball or seat show any
sign of wear or damage, replace them with new parts.
This carbide ball must seal tightly against its seat for the
valve to function properly.
5. Cover all parts with a thin coat of light oil before
reassembling.
NOTE: You will need to align the ridge on the seat
with the groove in the pump housing when
reassembling.
6. Drop in the valve ball.
7. Insert the ball stop and spring and replace the valve body.
Be sure that the o-ring is positioned properly and that the
tongue on the cap ts inside the spring.
8. Tighten the valve body securely with an adjustable
wrench. Do not over-tighten.
Valve Body
O-ring
Seal
Seat
Ball
Spring
Ball Stop
Cleaning the Hopper Screen
The screen at the bottom of the paint hopper may need cleaning
periodically. Check it every time you add paint. Remove
the screen by pulling it out of the hopper with a pliers. Clean
the screen with water or solvent and a soft-bristle brush, if
necessary.
