Series 8100/8150/8200/9100 Fire Pump
35 AC6102 Rev 03
8. Allow the bearing to cool to room temperature. Coat the
exposed sides with 2 to 3 oz. [55 to 85 g] of the
recommended grease.
9. Coat the inside of the bearing housing [3-025-4] with
grease and slide into place over the bearing. Attach the
bearing housing to the stuffing box with four cap screws
[3-909-9].
10. Repeat steps for the inboard end.
10.4.3.2 Series 8200
1. Press a new lip seal [3-177-9] into each bearing cap [5-
018-0].
NOTE: Seal lip or pressure side of seal must point away
from the end of the shaft the lip seal is assembled on.
2. Place two O-rings [6-914-9] on each stuffing box
bushing [6-008-0], and then slide over the shaft sleeve
with the beveled end facing the impeller.
3. Slide the deflectors [3-136-9] and bearing caps onto the
shaft. Install snap ring [5-915-3] on the inboard side of
the shaft. Install the split ring [5-050-4] and retaining
collar [5-421-4] on the outboard side of the shaft.
4. Heat the ball bearings [3-026-3-026-4], using either a
dry heat, or a 10-15% soluble oil and water solution.
NOTE: Do not exceed 275°F [135°C].
5. Using gloves slide the heated ball bearing [3-026-3]
onto the inboard end of the shaft against the snap ring.
6. Using gloves slide the two heated ball bearing [3-026-4]
onto the outboard end of the shaft. These bearings
must be installed back to back. Place the first bearing
on the shaft; when installing the second bearing, push
against the inner race to remove all clearance between
the inner races of the two bearings, and between the
inner race of the first bearing and the retaining collar.
7. Install the lock washer [3-517-4] and locknut [3-516-4]
on the outboard end of the shaft. Ensure that the
locknut is secured and then bend over the tabs on the
lock washer.
8. Allow the bearings to cool to room temperature. Coat
the exposed sides with 2 to 3 oz. [55 to 85 g] of the
recommended grease.
9. Slide the bearing housings [3-025-3, 3-025-4] into place
over the bearing. Attach the bearing caps to the bearing
housing with four cap screws [5-904-9].
10.4.3.3 Series 9100
1. Press bearing isolators [1-333-1] in each bearing cover
[3-018-3, 3-018-4]. Install gaskets [3-409-9] on each
bearing cover.
NOTE: Inboard bearing cover [3-018-3] is 1/4 in.
[6.4mm] less in width than outboard [3-018-4].
2. Slide bearing covers onto the shaft. Install the snap
rings [3-915-9]. Install thrust washer on the outboard
end.
3. Heat the ball bearings [3-026-2], using either a dry heat,
or a 10-15% soluble oil and water solution.
NOTE: Do not exceed 275°F [135°C].
4. Using gloves slide the heated ball bearing [3-026-2]
onto the shaft against the snap ring on the inboard end
and the thrust washer on the outboard end.
5. Install the lock washer [3-517-4] and locknut [3-516-4]
on the outboard end of the shaft. Ensure that the
locknut is secured and then bend over the tabs on the
lock washer.
6. Allow the bearings to cool to room temperature. Coat
the exposed sides with 2 to 3 oz. [55 to 85g] of the
recommended grease.
7. Press a bearing isolator [1-333-1] in the inboard bearing
housing and an oil seal [3-177-4] in the outboard
bearing housing.
8. Slide the bearing housings [3-025-2] into place over the
bearings. Attach the bearing covers to the bearing
housing with two cap screws [3-904-9].
10.4.3.4 Series 8150
1. Install slingers onto shaft
2. Press new lip seals into the bearing brackets.
Note: Seal lip or pressure side of seal must point away
from bearing
3. Place brackets onto shaft. Install backing snap rings
into the shaft grooves.
4. Heat the bearings using a dry heat.
Note: Do not exceed 275°F [135°C].
5. Using gloves slide the bearing onto the shaft. The
shielded side goes on first.
6. Install the beveled snap ring into the groove in the shaft,
outboard side only.
7. Install both bearing housings.
10.4.4 Rotating element
After completion of the preceding steps, carefully place the
shaft assembly into the lower half pump casing.
10.4.4.1 Series 8100
1. Set the rotating element in the pump casing [2-001-0],
assuring correct rotation. Locate both stuffing box
tongues in their respective casing grooves.
2. Locate pins [3-943-9] in the stuffing box and the casing
wear rings in their respective slots at the casing parting
line. Correct any O-ring bulging.
10.4.4.2 Series 8200
1. Set the rotating element in the pump casing [2-001-8],
assuring correct rotation. Correctly locate casing ring
pins, stuffing box bushing pins, and interstage
diaphragm pins in the casing main joint slots. (Sliding
the inboard bearing housing towards the coupling
slightly will ease assembly).
2. Bolt the outboard bearing housing in place. Ensure that
both housings are seated properly in the lower half
casing.
3. Bolt inboard bearing housing in place. Rotating element
should now turn freely.
10.4.4.3 Series 9100
1. Set the rotating element in the pump casing [2-001-8],
assuring correct rotation. Correctly locate casing ring
pins in the casing main slot. (Sliding the inboard
bearing housing towards the coupling slightly will ease
assembly).
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