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page 77
page 77
375 SE
800-00162
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Locate the scribe mark on the cam ring, the outlet support plate, and the flex side plate.
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Hold the outlet support plate and flex side plate together and assemble over the cam ring and rotor with
the scribe marks in- line.
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Hold the cartridge together to prevent movement and turn the assembly over so the outlet support plate
rests on a flat surface, and the flat wooden board is up.
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Remove the flat wooden board.
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Lubricate the exposed surface of the rotor and vanes with system fluid.
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Locate the scribe mark on the inlet support plate and flex side plate.
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Hold the inlet support plate and flex side plate together and assemble over the cam ring and rotor with
scribe marks in-line.
NOTE:
NOTE:
NOTE:
NOTE:
NOTE: The cast-in arrows located next to the socket head screws, indicate cartridge direction of rotation.
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Thread the two socket head screws into the cartridge until snug, (hand tight).
NOTE:
NOTE:
NOTE:
NOTE:
NOTE: The O.D. of all component parts of the cartridge kit must be in-line with each other or the cover cannot
be installed.
Align the cartridge as follows:
a. Install the cover over the cartridge. Tap lightly on the cover with your hand until each part centers. Remove
the cover gently so as not to disturb alignment. Torque socket head screws to the torque noted on Figure
7a, and recheck kit alignment with the cover. Repeat until cartridge kit is aligned.
b. Check the rotor for bind by inserting the index finger through the shaft opening of the inlet support plate. Hold
the cartridge kit in a horizontal shaft position and lift the rotor with the finger. The rotor should move freely
back and forth within the cartridge. If the rotor binds, open the kit, clean and stone all possible areas of bind,
then reassemble using the afore- mentioned procedure. The rotor MUST move freely within the cartridge
when assembled.
2. Basic Pump
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Clamp the body in a vise or place on 2x4 wooden blocks to facilitate assembly.
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Lubricate the primary shaft seal with petroleum jelly and place in position within the body, garter spring
up. See Figure 5a & 5b for seal arrangements.
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Use the seal installation tool shown in Figure 6 to prevent damage to the seal. Press the seal into the body
until it bottoms out.
NOTE:
NOTE:
NOTE:
NOTE:
NOTE: Two shaft seal arrangements are available in the pump series. If the pump model code indicates that
a secondary seal is required, perform the following step.
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Lubricate the secondary seal with petroleum jelly and place the seal in position against the shaft end of
the body. See Figure 5b. Use a small hardwood block to drive the seal evenly into the body. Installation
is complete when the seal face is flush with the front of the body. DO NOT drive the seal past flush as
it can block the body drain opening.
NOTE:
NOTE:
NOTE:
NOTE:
NOTE: If the shaft bearing was defective, install a new bearing as follows:
a. Press the shaft into the new bearing with an arbor press while supporting the bearing inner race. Refer to
Figures 5a & 5B and 7 for correct location of bearing on the shaft. Install a small snap ring behind the bearing.
SINGLE PUMP MAINTENANCE CONTINUED...
