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6. Remove the piston assembly by pushing down on the piston near the yoke.
7. Unscrew and remove the top nut using and adjustable wrench.
8. 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.
9. Clean the area where the new seals are to be installed.
Assembling the fluid section
1.
Lubricate the new top seal with separating oil 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 top 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 as you did with the
top seal. Place the piston/seal assembly into the bottom of the housing. Insert the plastic inser-
tion 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, 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. 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 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. Replace inlet valve. Install the suction set.
https://www.XPOtool.com
The Tool Experts
Item 63003
Page 22
01
2022-1
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