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5B — Disassembly of the P2 Unit.
5D — Reassembly of the P2 Unit.
An exploded view of the unit, Figure 5-3
is provided for referencing the numbers
in the following procedures, i.e. flinger
(#21).
5B Disassembly
The following tools and equipment are
needed for disassembly of the P2 unit:
Tools:
1. Soft plastic or wooden mallet.
2. Arbor press or vise.
3. 3/4" X 6" piece of water pipe.
4. Internal snap ring plier.
5. Penetrating oil.
When installing or removing bearings
from the shaft, the use of an arbor
press is strongly recommended.
To disassemble the pedestal:
Refer to Figure 5-3 for reference to the
numbered parts in the procedures.
1. Remove the flinger (#21) located in
the pump end of the bearing pedestal
(#3).
supported during this operation, no
damage will be done to the bearings.
3. Repeat step 2 to remove the other
bearing. Good support used on the
inner races will prevent bearing
damage.
5C Inspection of Components
Thoroughly clean all parts. All compo-
nents should be examined for wear and
corrosion. Replace any parts showing
visible wear.
Check to be certain that a press fit
still exists between the shaft and the
bearings. New bearings, or at least
cleaned and re-greased bearings, are
recommended.
Check the shaft for galling, pitting,
and corrosion. Surface corrosion on
the pump portion of the shaft must be
removed so the seals will slide freely
during assembly. The shaft diameter
3
24A
17
23
P2 BEARING PEDESTAL
33
4
21
24
Figure 5-3
30
NAME/DESCRIPTION
PART NO. QTY.
Bearing Pedestal
3
1
Snap Ring/
Bearing Retaining
4
1
Shaft
17
1
Flinger
21
1
Key Coupling
23
1
Ball Bearing/Inboard
24
1
Ball Bearing/Outboard
24A
1
Coupling Guard/Halves
30
2
Capscrew
33
4
Figure 5-4
should be no smaller than .002" below
the nominal fractional seal sizes.
Remove any nicks or burrs which may
have occurred during disassembly. Re-
clean parts as necessary.
5D Reassembly
All parts should be visually inspected
and cleaned or replaced as outlined
in 5C above. It is recommended that
the bearings be replaced anytime the
bearing pedestal is disassembled for
service.
1. Using an arbor press, install the
bearings on the shaft prior to install-
ing the shaft into the pedestal. A
steel “donut” with the proper inside
diameter and outside diameter,
Refer to Chart 1, should be used
between the arbor face plate and
the lower bearing to insure proper
installation and to prevent bearing
damage. The bearings must seat
against the shoulder for proper
alignment. Refer to Figure 5-7. *Also
refer to Alternate bearing installation
procedures.
2. Using a snap ring plier, remove snap
ring (#4).
3. Open the jaws of the vice approxi-
mately 2-1/4".
4. Place the pedestal, pump side down,
on the jaws. Refer to Figure 5-4.
5. Using a plastic or wooden
mallet, gently tap on the end of the
shaft until it slides out of the frame.
Both bearings should come out with
the shaft. Do not use a metal ham-
mer, severe damage to the shaft will
occur.
6. Using the arbor press, remove the
two (2) bearings from the shaft. Refer
to Figure 5-5. If the inner race is well
Figure 5-5
If an arbor press is not available, a
bench vise may be substituted using
the following instructions.
1. Remove the pedestal and
close the jaws to approximately
1-1/8".
2. Place the shaft with either
bearing resting on top of the jaws
and gently tap on the end of the
shaft until the bearing is removed.
Refer to Figure 5-6.
Figure 5-6
Figure 5-7
CHART 1
P2
Inside Diameter
1"
Outside Diameter
2"
2. Place the pedestal, pump mounting
surface up, in a vise or suitable
fixture and insert the bearing assem
-
bly. It should be possible to install
the shaft assembly with firm thumb
pressure. Refer to Figure 5-8. If
more force is required, the butt end
of a hammer handle or plastic mallet
may be helpful. The shaft assembly
should never be forced or driven in.
