© Titan Tool Inc. All rights reserved. 15
11. Line up the three screw holes and dowel pin hole on the
clutch rotor with the screw holes and dowel pin on the
drive shaft assembly hub. Place the clutch rotor onto the
hub.
12. Using a 3/16” hex wrench, thread the three socket screws
and lock washers through the clutch rotor and into the
drive shaft assembly hub. Evenly snug, tighten, and
torque the socket screws to 75–85 in/lbs.
13. Make sure the friction surface of the clutch rotor is clean
and free from oil or grease.
14. Follow steps 17–20 in the “Replacing the Gears”
procedure to mate the pump housing with the gear
housing.
Electrostatic discharge (ESD) potential could cause
damage to electronic pressure control. Use Titan
ESD wrist strap P/N 700-1037 or equivalent when
working on electronic pressure control.
15. Locate the two clutch eld wires in the EPC housing.
Gently pull the wires fully into the EPC housing so that
there is no slack in the gear housing. Connect the wires
to their proper terminals on the EPC board (refer to the
labels created earlier in this procedure or the electrical
schematic in the Parts List section of this manual).
16. Carefully place the EPC assembly over the EPC housing
taking care not to pinch any wires.
17. Install the four screws that secure the EPC assembly to
the EPC housing. Tighten securely.
Mating the Gear Housing and the Clutch Housing
1. Place the gear housing assembly onto the cart in front
of the clutch housing. Line up the dowel pins in the
gear housing with their corresponding holes in the clutch
housing. Slide the gear housing assembly onto the clutch
housing until there is no gap between the housings.
2. Thread the four hex screws and lock washers through the
clutch housing and into the gear housing.
3. Using a 1/2” wrench, snug and tighten the hex screws in a
crossing pattern. Torque to 140–155 in./lbs.
4. Using a 9/16” socket, thread the two hex screws that
secure the gear housing to the cart through the underside
of the cart and into the gear housing. Torque to 100–120
in./lbs.
5. Connect the wire from the EPC housing to its mating
connector on the engine wire harness.
6. Make sure that there is a white Teon o-ring on the end
of the transducer that gets inserted into the lter housing.
Insert the transducer into the lter housing port.
7. Hold the transducer tube with a pliers to prevent it from
rotating, and turn the transducer nut clockwise with a
3/4” open-end wrench to tighten it into the lter housing.
Torque the nut to 360–400 in./lbs.
Checking the Clutch Gap
1. Remove the plastic plug from the top of the clutch
housing. Look through the port to locate the clutch
armature and the clutch rotor.
2. Check the gap between the clutch armature and the clutch
rotor using a .016” feeler gauge and a .035” feeler gauge.
a. Insert each feeler gauge through the port and into the
gap between the clutch armature and the clutch rotor.
The .016” feeler gauge should t in the gap. The
.035” feeler gauge should not t in the gap.
b. Pull the engine pull cord several times to rotate the
clutch armature, checking the gap with each feeler
gauge between each pull.
c. If the .016” gauge does not t or the .035” gauge
does t at any checkpoint, the gap must be
readjusted. This is done by relocating the clutch hub
and armature assembly on the engine shaft. Refer
to the “Removing/Replacing the Clutch Hub and
Armature Assembly” procedure.
Servicing the Fluid Section
Use the following procedures to service the valves and repack
the uid section.
1. Start the engine (refer to the procedures in the Operation
section of this manual). Turn the pressure control knob
clockwise to its maximum pressure setting.
2. Toggle the sprayer ON/OFF switch between the ON and
OFF positions in short bursts until the slider assembly
stops in a position where the uid section connecting pin
and retaining ring are visible through the slot in the slider
housing.
3. Turn off the engine and perform the Pressure Relief
Procedure.
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.
Connecting
Pin
Fitting
Retaining
Ring
Slider
Assembly
Slider
Housing
Jam Nut
Cylinder
Inlet Valve
Housing
4. Loosen and remove the uid
hose from the tting on the
back of the cylinder of the uid
section.
5. Loosen and remove the four
front cover screws. Remove
the front cover.
6. Slide the retaining ring up on
the slider assembly to expose
the connecting pin.
7. Push the connecting pin
forward through the slider
assembly and piston. The
connecting pin will fall out
from the rear window of the
slider housing where it can be
retrieved.
8. Using a wrench, turn the jam
nut counterclockwise to loosen
it from the pump housing.
9. Turn the uid section counterclockwise to remove it from
the pump housing.
Inlet Valve
Housing
Viton
O-Ring
O-ring
Teflon
Back-Up
Ring
Inlet
Screen
Snap Ring
Inlet Valve
Seat
Inlet Valve
Ball
Inlet Cage
Lower
Housing
Cylinder
10. Place the uid section cylinder
upright in a vise by clamping
on the wrench ats.
NOTE: Do not over-tighten the
vise. Damage to the
cylinder may occur.
11. Loosen and remove the
lower housing and inlet valve
housing.
12. Remove the inlet cage, inlet
valve ball, inlet valve seat, and
o-ring from the inlet valve.
13. Clean out any debris in
the inlet valve housing and
examine the housing and the
inlet valve seat. If the seat
is damaged, reverse to the
unused side or replace the
seat. If necessary, remove
and clean inlet screen. Use
snap ring pliers to remove
retaining ring.
