Titan 11440i - Manual

0602 © 2002 Titan Tool Inc. All Rights Reserved.

1

Servicing the Fluid Section

Use the following procedures to service the valves and repack the
fluid section. Perform the following steps before performing any
maintenance on the fluid section. For best results use all parts sup-
plied in this kit.

1. Loosen and remove the four front cover screws. Remove the

front cover.

2. Position the crankshaft/slider assembly at the bottom, dead-

center of its stroke so that the connecting pin and retaining ring
are visible below the slider assembly. This is done by turning
the sprayer on and off in short bursts until the connecting pin is
visible below the slider housing.

3. Perform the “Pressure Relief Procedure” in the Owner’s Manual

and unplug the unit.

Before proceeding, follow the Pressure Relief Procedure
outlined in the Owner’s 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!

4. Remove the return hose from the clamp on the siphon tube.
5. Unscrew the siphon tube/siphon set from the foot valve.
6. Loosen and remove the high-pressure hose from the nipple on

the back of the upper housing of the fluid section.

Servicing the Valves

The design of the fluid section allows access to the foot 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 foot valve seat or outlet
valve seat. Use the following instructions to clean the valves and
reverse or replace the seats.

1. Loosen and remove the foot valve

housing from the lower housing.

2. Clean out any debris in the foot valve

housing and examine the housing
and the foot valve seat. If the seat is
damaged, reverse or replace the
seat.

3. Using two wrenches, hold the upper

housing at the wrench flats with one
wrench and loosen the lower housing
with the other. Remove the lower
housing.

Foot Valve

Housing

Black
O-Ring

O-Ring

White

Back-Up

Ring

Foot Valve

Seat

Foot Valve

Ball

Foot Valve

Cage

Lower

Housing

Upper

Housing

WARNING

Fluid Section Repacking Kit

For 840i, 1140i, and 3411i airless sprayers

P/N 800-273

4. Using a 3/8” hex wrench, loosen

and remove the outlet valve
retainer from the piston rod.

5. Clean out any debris and

examine the retainer and outlet
valve seat. If the seat is
damaged, reverse or replace
the seat.

6. Remove, clean, and inspect the

outlet valve cage and outlet
valve ball. Replace if they are
worn or damaged (the outlet
valve cage is not included with
this kit but can be ordered
separately).

7. Reassemble the valves by

reversing the steps above. During reassembly of the outlet valve,
use the new outlet valve ball, nylon washer, and outlet valve seal
supplied with this kit. During reassembly of the foot valve, use the
new o-ring and foot valve ball supplied with this kit.

Repacking the Fluid Section

1. Remove the foot valve assembly and

the lower housing using the steps in
the “Servicing the Valves” procedure
above.

2. Slide the retaining ring up on the

slider assembly to expose the
connecting pin.

3. Push the connecting pin back through

the slider assembly and piston. The
connecting pin will fall into a
recessed area of the gear box
housing where it can be retrieved.

4. Tap the knock-off nut with a soft

hammer so that it turns
counterclockwise and loosens.

5. Turn the fluid section

counterclockwise to remove it from
the gear box housing.

6. Place the upper housing upright in a

vise by clamping on the wrench flats.

7. Using a wrench, remove the upper

seal retainer.

8. Slide the piston rod out through the

bottom of the upper housing.

9. Inspect the piston rod for wear and

replace if necessary.

10. Remove the upper and lower

packings from the upper housing.

NOTE: Be careful not to scratch,

score, or otherwise damage
the upper housing during
removal of the packings.

NOTE: Do not over-tighten the

vise. Damage to the upper
housing may occur.

NOTE: The outlet valve does

not need to be
disassembled from
the piston rod for this
procedure.

Retaining

Ring

Connecting

Pin

Slider

Assembly

Crankshaft

Knock-Off

Nut

Upper Seal

Retainer

Spacer

Upper

Packing

Lower

Packing

Upper

Housing

Piston Rod

Wear Ring

NOTE: During reassembly, make sure the new black o-

rings and the new white back-up rings between the
upper housing and lower housing as well as
between the lower housing and the foot valve
housing are lubricated with grease and in position.

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.

Outlet Valve

Retainer

Black O-Ring

White Back-Up

Ring

Nylon

Washer

Outlet Valve

Seat

Outlet Valve

Ball

Outlet Valve

Cage

Outlet Valve

Seal

Piston Rod

Upper

Housing

Lower

Housing

Instruction Sheet

For professional use only

Form No. 313-1875A