Servicing The Fluid Section - Titan 0528900D Owner's Manual

12. When the set screw is properly seated, install the remaining
three pointed set screws. Do not tighten the set screws.
13. Using a crossing pattern, tighten each of the pointed
setscrews until they are snug. Once all four pointed set
screws are snug, use a crossing pattern to tighten and
torque the set screws to 70–80 in./lbs.
IMPORTANT: It is very important to evenly snug, tighten,
and torque the clutch field pointed set screws in a crossing
pattern. This ensures the clutch field will stay centered in
the gear housing.
15. 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.
16. 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.
17. Make sure the friction surface of the clutch rotor is clean
and free from oil or grease.
18. Locate the two clutch field wires in the control 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 relay (refer to the labels
created earlier in this procedure or the electrical schematic
in the Parts List section of this manual).
19. Carefully place the heat sink assembly over the control
housing taking care not to pinch any wires.
20. Install the four screws that secure the heat sink assembly
to the control 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 12 point, 5/16" 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 hex screw that secures
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.
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 fit in the gap. The .035" feeler
gauge should not fit 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 fit or the .035" gauge does
fit 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 Armature Assembly" procedure.
© Titan Tool Inc. All rights reserved.

Servicing the Fluid Section

Use the following procedures to service the valves and repack
the fluid section.
1. Using a Phillips screwdriver, remove the four front cover
screws. Remove the front cover.
2. 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.
3. Toggle the sprayer ON/OFF switch between the ON and
OFF positions in short bursts until the slider assembly and
piston rod stop at the bottom of their stroke (in their lowest
position).
4. 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.
Servicing the Valves
The design of the fluid section
allows access to the inlet valve
and seat as well as the outlet
valve and seat without completely
disassembling the fluid section. It
is possible that the valves may not
seat properly because of debris
stuck in the inlet valve seat or
outlet valve seat. Use the following
instructions to clean the valves and
reverse or replace the seats.
NOTE: Keep the sprayer in
the upright position for
this procedure.
1. Using a wrench, loosen
and remove the inlet valve
housing from the fluid
section housing.
2. Clean out any debris in the inlet valve housing and
examine the valve housing and seat. If the inlet valve
seat is damaged, reverse the seat to the unused side or
replace the seat.
NOTE: If the inlet valve seat is reversed or replaced, the
inlet valve ball must be replaced.
3. Using a 3/8" hex wrench, loosen and remove the outlet
valve retainer from the piston rod.
NOTE: Always service the
outlet valve with the
piston rod attached
to the pump. This will
prevent the piston rod
from rotating during
disassembly of the
outlet valve.
4. Clean out any debris and
examine the outlet valve retainer
and seat. If the outlet valve
seat is damaged, reverse to the
unused side or replace the seat.
NOTE: If the outlet valve seat is reversed or replaced,
the outlet valve ball must be replaced.
5. Remove, clean, and inspect the outlet cage and outlet
valve ball. Replace if they are worn or damaged.
6. Reassemble the valves by reversing the steps above.
13
Fluid Section
Housing
Piston Bushing
Inlet Cage
Inlet Valve Ball
Inlet Valve Seal
Inlet Valve Seat
PTFE O-Ring
Inlet Valve
Housing
Piston Rod
Upper Seal
Upper Cage
Nylon Washer
Outlet Valve
Ball
Outlet Valve
Seat
Outlet Valve
Retainer
English