IMPORTaNT: Do not allow solvent to drain into the motor
enclosure of the pump.
12. Wipe out excess moisture from cavity and apply a film of
piston lube or light grease to the inside of the cavity.
13. Replace the seal in the bushing:
a. Place bushing in vise (do not
over clamp - may egg-shape
the hole)
b. Using a small flat blade
screwdriver, carefully pry the
seal from the bushing.
c. Using a brush and solvent,
clean and inspect the
bushing.
d. Measure the bushing. If the
bushing inner diameter at
either end is more than 0.441 inches, then the bushing
should be replaced. A new bushing will prolong seal
life.
e. Placing the new seal flat on a
stable surface, snap the bushing
over the seal.
14. Fill the bushing cavity with light
grease and temporarily slide the
piston through to force out any
excess. Wipe off grease from tip of
piston and remove.
15. Slide the bushing into the bushing/
seal cavity in the housing up to the
start of the threads.
16. Engage the threads while rotating the bushing/seal
assembly.
17. Screw the assembly in until the hex bottoms against the
spot face in the housing (35-45 in-lbs).
18. Placing the yoke/piston assembly in a vise, remove and
replace the old piston with the new piston in the seal/
piston kit (torque the socket head screw to 60-70 in-lbs).
NOTE: If the yoke is worn excessively, it should be
replaced at this time along with the driver
bushing and driver screw. If the yoke slot
measures greater than .510 inches wide, then
the yoke, shoulder bolt and eccentric bushing
should be replaced as a set.
19. Slide the new piston and yoke assembly into the bushing/
seal assembly oriented as shown.
20. Align the yoke slot with the eccentric threaded hole.
21. Thread the shoulder screw and bushing into the eccentric
while jamming the yoke again with the wrench. Torque
shoulder screw to 50-60 in-lbs.
22. Replace the heel cover and screws - Torque screws to 6-8
in-lbs.
English
Replacing the Pressure Setting valve
Seal
assembly
Bushing
10. Carefully pry the worn seat from the pump housing.
11. Clean the seat bore in the pump housing.
12. Apply a thin film of adhesive into the seat recess.
13. Press new seat into seat bore and wipe away excess
14. Assemble diaphragm assembly into the pump, taking care
15. Apply a generous coat of grease the stem threads
16. Assemble spring, stem and locking nut.
17. Torque locking nut to 100-120 in-lbs
18. Rotate stem counter-clockwise until it is backed out as far
19. Without turning the stem,
20. Apply Loctite 243 to the threads
10
1. Perform CLEANUP procedure.
2. Adjust pressure to PRIME position.
3. Remove material hose.
4. Remove pump from turbine, ensuring power is removed.
5. Tip pump on its side to drain excess solvent. The unit
should be tipped on the side that contains the fittings for
the siphon/return tubes.
6. Remove pressure adjustment knob
set screw using a 1/8 allen wrench.
Remove the knob.
7. Remove diaphragm locking nut
using an adjustable wrench.
8. Remove stem from locking
nut, taking care not to lose the
compression spring.
9. Remove the diaphragm assembly from the pump housing.
adhesive.
to ensure the edge of the diaphragm disk are pushed past
the threads and within the thread relief.
as possible. This is the PRIME position.
assemble the pressure
adjustment knob and lock
down so the PRIME notation is
oriented as shown.
of the set screw. Tighten the
set screw on the pressure
adjustment knob. Torque to 6-8
in-lbs.
Set screw
Pressure
knob
Locking
nut
Stem
Spring
Diaphragm
assembly
Seat
PRESSURE
PRIME
6:00
© Titan Tool. All rights reserved.