8. Reassemble the pump by reversing the above steps.
During reassembly, make sure the thrust washers is in
place.
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.
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. Using an 1/8” hex wrench, loosen and remove the set
screw from the bottom of the pump housing.
8. Slide the transducer assembly out of the bottom of the
pump housing.
9. Remove the transducer o-ring from the old transducer
assembly.
10. Apply a thin film of grease to the transducer o-ring and
place it into the bottom of the new transducer assembly.
11. Install the new transducer assembly into the pump
housing.
12. Thread the set screw into the pump housing and tighten
securely.
13. Reassemble the pump by reversing steps 1–6.
Make sure the transducer is aligned properly with the hole
in the pump block during reassembly. Improper alignment
may cause damage to the transducer o-ring.
Front Cover
Pump Housing
Front Cover Screw
2nd Stage Gear
Thrust Washer
Motor
Gear and Crank
Assembly
Armature Gear
Motor Mounting
Screw
Motor Cover
Motor Cover Screw
NOTE: Refill the gear box with five ounces of
Lubriplate (P/N 314-171).
Replacing the PRIME/SPRAY Valve
Perform the following procedure using PRIME/SPRAY valve
replacement kit P/N 700-258.
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. Tighten securely
with wrench.
5. Place the cam base over the valve housing assembly.
Lubricate the cam base with grease and line up the cam
with the pump block.
6. Line up the hole on the valve stem with the hole in the
valve handle.
7. Insert the groove pin into the valve handle and through
the valve stem to secure the valve handle in position.
Gasket
Cam Base
Valve Stem
Pump Block
Valve Housing
Assembly
Valve
Handle
Groove Pin
T-Slot
Pump
Housing
Pump
Block
Pump
Block
Mounting
Screw
Front
Cover
Front
Cover
Screw
Set
Screw
Transducer
Assembly
Transducer O-Ring
© Titan Tool Inc. All rights reserved. 9
