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Customer Service: 800-880-0993 14 © 2003 Wagner Spray Tech - All rights reserved.
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DISASSEMBLY OF THE FLUID SECTION
1. Remove the suction set.
2. Remove the front cover and the four
screws that secure it using a T20
Torx head driver.
3. Remove the yoke screw and washer
that secures the dowel pin. The
dowel pin connects the yoke to the
piston.
4. Using the pliers, pull the dowel pin
out.
5a. For models 9140, 9140S, and 9150, rotate the pump
shaft so the piston is in the top dead center position. This
can be done by pushing on the yoke. This is required to
disassemble all the parts.
5b. For models 9170, 9190, and 9210, inspect the yoke
assembly and piston. In order to remove all the necessary
parts, the piston must not be in the bottom dead center
position. If the piston is at the bottom of the stroke, install
the front cover and screws, turn the pump on briefly to
index the piston, unplug the unit, and repeat step 2.
6. Unscrew and remove the inlet valve assembly using an
adjustable wrench.
7. Remove the piston assembly by pushing down on the
piston near the yoke.
8. Unscrew and remove the top nut using and adjustable
wrench.
9. Remove the worn seals using a flat head screwdriver or
punch. Remove the top seal from the top and the bottom
seal from the bottom by pressing against the side of the
seal and popping it out. Be sure not to scratch the
housing where the seals are located.
10. Clean the area where the new seals are to be installed.
ASSEMBLY OF THE FLUID SECTION
1. Lubricate the new top seal with Separating Oil (P/N
0154908) or light household oil and by hand place the seal
(cup side of seal down) into the top port of the housing.
2. Place a small amount of anti-seize on the threads of the
nut. Place the top nut into the top of the housing and
tighten with an adjustable wrench. This will drive the top
seal into the correct position.
3. Turn the pump upside down.
Lubricate the seal on the
piston/seal assembly similar to
the top seal. Place the
piston/seal assembly into the
bottom of the housing. Insert
the plastic insertion tool and
thread into position to properly
seat the piston/seal. Thread
fully until tight. Remove the
insertion tool.
4. Install the new O-ring on the inlet valve assembly,
lubricate with Separating Oil (P/N 0154908), thread into
the bottom (inlet) of the housing, and tighten with an
adjustable wrench. This will drive the bottom seal into the
correct position.
5. Align the piston with the yoke. A rubber mallet may be
used. Be careful not to damage the piston.
6. Apply any type of household grease to the piston and yoke
area to prolong life. Apply to the holes in the yoke where
the dowel is inserted.
7. Install the dowel pin to connect the yoke to the piston. The
piston may have to be moved up or down to do this.
8. Install the yoke screw and washer to secure the dowel pin.
9. Turn pump right side up and apply a few drops of Wagner
Separating Oil or light household oil between the top nut and
piston. This will prolong the seal life.
10. Install front cover and four (4) screws.
11. Install the suction set.
Dowel
Screw
0512229 Kit
(9170, 9190,
and 9210)
0512228 Kit
(9140, 9140S
and 9150)
0512229 Kit
(9170, 9190,
and 9210)
0512228 Kit
(9140, 9140S,
and 9150)
Washer
Retaining
ring
Yoke
Piston/seal
assembly
Top seal
(cup down)
Top nut
O-ring
Inlet valve assembly
CAUTION! DO NOT
attempt to remove the
seals from the piston.
Insertion
tool
FLUID SECTION SEAL REPLACEMENT INSTRUCTIONS
KIT 0512228 (MODELS 9140, 9140S, AND 9150)
KIT 0512229 (MODELS 9170, 9190, AND 9210)
Always wear protective eye wear while servicing the pump. Be sure to follow the PRESSURE RELIEF PROCEDURE (page 6)
when shutting the unit down for any purpose, including servicing or adjusting. After performing the pressure relief
procedure, be sure to unplug the unit before servicing or adjusting. Area must be free of solvents and paint fumes.
WARNING
SER
VICE NOTE--MODEL 9210
The inlet check ball is a wear part. Erosion of the check
ball can result in a loss of performance similar to a worn
piston and seals. Inspect the inlet ball by removing the
inlet valve assembly. If worn, replace the assembly with
P/N 0512224. This part number is available at Wagner
authorized service centers or by calling 1-800-880-0993.