32
COMPONENT REPLACEMENT (CONT.)
Wash Pump/Motor
The wash pump/motor assembly is bolted to bracket that bolted directly to the base of the
machine. The panel can be removed to gain easier access to the pump assembly.
To disassemble the pump/motor assembly:
1. Disconnect the power source to the motor.
2. Disconnect electrical connections. Tag wires carefully to preserve that the correct rotation.
Loosen pump base.
3. Loosen the eight 3/8-16” bolts holding the volute to the motor bracket. Volute may be left in
the piping.
4. Slide pump away from the volute until the impeller is exposed.
5. Hold pump and motor shaft with large locking pliers. Remove the 3/8-16” impeller lock bolt.
The use of a socket wrench is suggested.
6. Remove the impeller from the shaft. Two screwdrivers or other suitable levers against the
bracket will help, or you can use a puller to remove the impeller. Do not bend the impeller
shrouds.
7. Remove pump seal from shaft by using two screwdrivers as levers.
Discard the old pump seal.
8. Remove seal seat.
Discard the old seat.
9. Inspect the shaft sleeve. Depending on the amount of damage, it should be replaced unless it
can be polished to remove the score markings by using an extra fine emory cloth. Make sure
that keyway area is clean.
10. Remove the shaft sleeve by heating the sleeve up to 300˚F(149˚C). This will loosen up the
sleeve and you should be able to slip it from the shaft using a bearing puller.
Do not try to
force the sleeve off as this will cause unecessary damage to sleeve and shaft.
11. Replace any needed component(s).
To reassemble pump/motor assembly:
1. Clean motor shaft if any solvents or liquids have been used, dry throughly. Apply soap or
non-petroleum based product, as lubrication, to the shaft. Make sure that entire sleeve area is
covered.
2. Install new sleeve by tapping into place using a hollow rod or 1” pipe nipple.
3. Clean the seat cavity and motor shaft throughly. Place a small amount soap or non-petroleum
based product on the seat cup or “O” ring and start it into the seat cavity.
Do not scratch the
seat surface
. A rough or dirty cloth will scratch this surface, so be extremely careful. Tap the
seat into the cavity by using a wooden dowel, plastic rod, etc. Again, make sure that you do
not scratch the surface.
4. Place a small amount of vegetable oil or non-petroleum based product on shaft and slip seal,
with the carbon side toward the seat, over the motor shaft. Push as far as it will go without
having to force it.
5. Install the new sleeve gasket over the shaft.
COMPONENT REPLACEMENT
Содержание PP-28 Corner
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Страница 86: ...78 REPLACEMENT PARTS 1 2 3 4 7 8 6 9 10 4 11 12 13 5 Figure 41 Pump Assembly ...
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