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2. Remove the five screws securing the front cover and remove the cover.
If replacing the pump shaft seal only, remove the old seal and install the replacement as shown in
the illustration below, then go to Step 5.
If replacing the pump vanes, go to Step 3.
3. Grasp the pump shaft and carefully pull the rotor assembly straight out of the pump housing far
enough to expose the vanes. IMPORTANT: The vanes are spring-loaded. Use one hand to
hold the vanes while pulling the rotor assembly the rest of the way out of the housing. Carefully
release the vanes and discard the worn vanes, springs, and rods.
Step 4 - Replace
vanes, spring,
and rod.
4. Assemble the replacement vanes, spring and rod into the rotor assembly. Compress the vane
spring and carefully insert the rotor assembly back into the pump housing.
5. Position the replacement gasket on the pump body, slip the cover over the shaft, and align the
pins in the cover with the holes in the pump housing. Reinstall the five screws removed in Step
2 and tighten securely (torque to approximately 60 inch-pounds).
6. Slip the pump handle back onto the shaft and align the screw hole in the handle with the screw
hole in the shaft. Tighten the setscrew loosened in Step 1 securely.
Pump shaft seal fits into the
recess of the pump cover.
Step 5 - Replace gasket.
Step 3 - Grasp
shaft and pull
rotor assembly
out of housing.
6
Step 1 - Loosen
setscrew and
remove handle.
Step 2 - Remove cover
screws and cover.
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