NOTE: If the motor will not dislodge from the pump
housing:
Remove the front cover plate.
Using a rubber mallet, carefully tap on the front of the
motor crankshaft that extends through the connecting
rod.
5.Inspect the armature gear on the end of the motor for
damage or excessive wear. If this gear is completely
worn out, replace the entire motor.
6.Remove and inspect the 2nd stage gear for damage
or excessive wear. Replace if necessary.
7.Remove and inspect the gear and crank assembly for
damage or excessive wear. Replace if necessary.
8.Reassemble the pump by reversing the above steps.
During reassembly, make sure the thrust washers is in
place plug-in.
NOTE:Refill the gear box with five ounces of
Lubriplate
Replacing the Transducer
1.Loosen and remove the four front cover screws.
Remove the front cover.
2.Stop the sprayer at the bottom of its stroke so that the
piston is in its lowest position. Turn off and unplug
the sprayer.
WARRING
Before proceeding, follow the Pressure Relief
Procedure outlined previously in this manual.
Additionally, follow all other warnings to reduce the risk
of an injection injury, injury from moving parts or electric
shock. Always unplug the sprayer before servicing!
3.Tilt the pump back for easy access to the fluid
section.
4.Using a 3/8” hex wrench, loosen and remove the two
pump block mounting screws.
5.Pull the pump block down approximately 1/2¡± from
the pump housing to clear the transducer.
6.Slide the pump block and piston rod forward until the
piston rod is out of the T-slot on the connecting rod.
7.Loosen and remove the four electronic pressure
control (EPC) mounting screws.
8.Pull back the EPC for access to the transducer
9.Unplug the transducer connection from EPC board
location “JP3” (refer to the electrical schematic in the
Parts List section of this manual).
10.Using an 1/8” hex wrench, loosen and remove the
set screw from the bottom of the pump housing.
11. Slide the transducer assembly out of the bottom of
the pump housing.
12.Install the new transducer assembly into the pump
housing.
13.Thread the set screw into the pump housing and
tighten securely.
14.Plug the transducer connection into the EPC board
at location “JP3”(refer to the electrical schematic in the
Parts List section of this manual).
CAUTION
Make sure the transducer is aligned properly with the
hole in the pump block during reassembly. Improper
alignment may cause damage to the transducer
gasket.
Replacing the PRIME/SPRAY Valve Perform the
following procedure using PRIME/SPRAY valve
replacement kit
1
.Push the groove pin out of the valve handle.
2.Remove the valve handle and the cam base.
3.Using a wrench, loosen and remove the valve
housing assembly.
4.Make sure the gasket is in place and thread the new
valve housing assembly into the pump block.
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