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18. The lower Shaft Bearing (34) can usually be pushed
from the Housing with a wooden dowel. However, if
the Water Seals were badly worn so that water got into
and around the Bearing, it may be necessary to forcibly
drive the Bearing from the Housing. If this is the case
make certain you have a new Bearing on hand for
installation.
ASSEMBLY
General Instructions
1. Always press on the inner ring of a ball–type bearing
when installing the bearing on a shaft.
2. Always press on the outer ring of a ball–type bearing
when pressing the bearing into a bearing recess.
3. Whenever grasping a tool or part in a vise, always use
leather–covered or copper–covered vise jaws. Take
extra care with threaded parts and housings.
4. Except for bearings, always clean every part and wipe
every part with a thin film of oil before installation.
5. Check every bearing for roughness. If an open bearing
must be cleaned, wash it thoroughly in a suitable
cleaning solution and dry with a clean cloth. Sealed
or shielded bearing should never be cleaned. Work
grease thoroughly into every open bearing before
installation.
6. Apply a film of O–ring lubricant to all O–rings before
final assembly.
Assembly of the Pump
1. If the Water Seals (39) were removed from the Water
Seal Cap Assembly (38) install new Seals as follows:
a. Press the first Seal, lip side first, into the Water
Seal Cap until it bottoms against the shoulder.
b. Press the second Seal, lip side trailing, into the
Water Seal Cap until the trailing edge of the Seal is
flush with the face of the Water Seal Cap.
c. Insert the Impeller Spacer (40), beveled end first,
through both Seals until its beveled end is flush
with the threaded end of the Water Seal Cap.
2. Install the lower Shaft Bearing (34) followed by the
Seal Spacer (36) in the bottom of the Housing (14)
until the Bearing seats against the Housing Snap
Ring (37).
3. Using a water seal cap spanner wrench, install the
Water Seal Cap Assembly (38). Tighten the Water
Seal Cap to 20 to 25 ft–lb (27 to 34 Nm) torque.
4. Grasp the large diameter end of the Rotor Shaft (33) in
leather–covered or copper–covered vise jaws so that
the small diameter end is upward.
5. Slide the Front End Plate (31), bearing recess first,
over the Rotor Shaft.
6. Place the Rotor Key (29) in the keyslot in the Rotor
Shaft.
MAINTENANCE SECTION
7. Slide the Rotor (28) over the Rotor Shaft, engaging the
8. Place a Vane (30) in each vane slot.
9. Place the Cylinder Assembly (25), small dowel first,
10. Place the Rear End Plate (24) over the Rotor Shaft and
11. Check the outside diameter and large inside diameter
12. Press the rear rotor bearing onto the hub of the
13. Press the Controller Assembly into the hub side of the
14. Using the No. 99V60–950 Controller Wrench, install
15. Install the Controller Retaining Nut. Tighten the Nut
16. Remove the assembled motor from the vise.
17. Slide the upper Shaft Bearing (34) on the large
18. Slide the Bearing Spacer (35) on the Rotor Shaft until
19. Stand the Housing (14) upright on the workbench.
17
Rotor Key.
over the Rotor so that the small dowel engages the
alignment hole in the Front End Plate.
against the Cylinder, so that it engages the Cylinder
Dowel (27).
of the rotor bearing seal for wear. If the outside
diameter of the hub is worn to 1.764" (29.881 mm) or
smaller, and/or the large inside diameter is worn to
0.910" (23.122 mm) or larger, install a new rotor
bearing seal.
Take all measurements 90 to the left of the dowel
hole when facing the hub side of the seal.
Install the rotor bearing seal, flat side first, so that the
Cylinder Dowel engages the alignment hole in the
Bearing Seal.
Controller Assembly (18).
Rotor Bearing Cage (21) until it is within 1/8" (3 mm)
of seating.
The Controller has left–hand threads.
Tighten the Controller to 8 to 10 ft–lb (10.8 to
13.5 Nm) torque. Do not exceed 10 ft–lb (13.5 Nm)
torque. The Controller may be damaged if this
torque is exceeded.
the assembled Controller, Bearing and Cage on the
Rotor Shaft.
The Controller Retaining Nut (20) has right–hand
threads.
to 6 to 9 in–lb (0.67 to 1.07 Nm) torque.
diameter end of the Rotor Shaft until it seats against
the shoulder on the Shaft.
it contacts the Bearing.
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