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Series 8100/8150/8200/9100 Fire Pump
Pump Size
12X8X21F
12X8X22F-M
14X10X20F
16X12X23F
14X10X20F-L
Table 10
Series 9100 Impeller Location
10.4.2.2 Series 8200
1.
Assemble the impeller key [3-911-1] in the shaft [3-007-
0].
2.
Identify the first and second stage impellers [4-002-0] by
the casted label, and locate the second stage impeller
on the shaft in accordance with Fig. 22 and Table 11.
3.
Pre-assemble the interstage bushing [3-034-1] and the
diaphragm [3-231-0] as follows:
i.
Install O-rings [3-914-7, 3-914-8] in the three
grooves of the interstage bushing.
ii.
Lightly press the bushing into the diaphragm,
locating the hole in the bushing over the pin in the
diaphragm. Install snap ring [3-915-0] to secure
the assembly.
4.
Slide the interstage bushing assembly over the shaft
and place over the rear hub of the impeller.
5.
Place the other impeller on the shaft and slide over the
interstage bushing until it touches the impeller already
installed.
6.
Apply a 1/4 in. [6.4mm] bead of RTV silicone sealant,
(Dow Corning or equivalent), uniformly about the shaft
sleeve [3-009-9] inside diameter, covering an area of
about 1/2 in. [12.8mm] at each impeller end of the
sleeve. Also apply sealant to the face of the impellers.
7.
Slide the shaft sleeves onto the shaft to evenly
distribute the sealant. Rotate until the pin in the sleeve
engages into the keyway of the impellers and push the
sleeves against the impeller face until the sleeve is
flush against the face. Wipe off excess RTV silicone
sealant.
8.
Place the sleeve O-ring [3-914-9] onto the shaft, into the
sleeve counterbore. Assemble the shaft sleeve nut [3-
015-9].
35
A
Packing Size
13.50
0.625
15.81
16.60
Fig. 22
Series 8200 Impeller location
Pump Size
A
8x6x14F-S
8X6X14F-L
12.06
8x6x18F
Table 11
Series 8200 Impeller Location
10.4.3 Bearings and bearing housings
10.4.3.1 Series 8100
1.
Press a new lip seal [3-177-9] into each stuffing box [3-
073-9]. Before installing the seal, lubricate it with
lightweight oil.
NOTE: Lip seals should seat against the machined
shoulder in the bracket.
NOTE: The seal lip or pressure side of the seal should
point away from the bearings [3-026-3, 3-026-4].
2.
Lubricate and roll O-ring [3-914-1] into the groove of
each stuffing box.
3.
Slide the outboard stuffing box on the shaft so that the
shaft end extends through the packing area, but does
not enter the lip seal. This will permit the installation of
the deflector [3-136-9].
4.
Slide the deflector over the shaft end then carefully
push the shaft end through the lip seal and slide the
stuffing box fully onto the shaft.
5.
Heat the bearing [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].
6.
Using gloves slide the heated bearing onto the shaft
against the shaft shoulder.
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.
NOTE: A lock washer and locknut are not installed on
the inboard end of the shaft.
Packing Size
0.500
AC6102 Rev 05
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