Fristam Pumps FP Series, Instruction And Maintenance Manual, Page: 7 / 32

Fristam FP/FPX Series Pump
7
Figure 10
until the rotating seal face comes off the shaft ( Figure 10 ). Discard
the seal components after you remove them.
j) SINGLE FLANGE: Loosen the housing clamping bolt with the two
3/4” wrenches until it is loose in the flange support. (Note: the
clamping bolt does not have to be removed.) Now slide the pump
housing off the end of the pump shaft. If the pump housing does
not come out of the flange support easily, widen the flange support
by driving a screwdriver into the slot on top (
Figure 11 ).
DOUBLE FLANGE: Loosen and remove the four housing bolts that
pass through the flange support and thread into the back of the
pump housing with the 3/4” wrench. Slide the pump housing off
the end of the pump shaft.
k) Place the pump housing face down on the housing studs.
l) Loosen the retaining ring bolts with the 7/16” wrench and remove
them from the hub of the pump housing.
m) Remove the retaining ring.
n) Place a finger through the stationary seal, pull it out of the seal
cavity and discard. If the stationary seal has been in the pump for
an extended period, it may be necessary to softly tap it out from the
opposite end using a rubber mallet.
If you have a Silicon Carbide Stationary sPLIT Seal design - two
pieces will be removed.
o) Check for the flat gasket in the bottom of the seal cavity. Remove
this gasket, discard and clean the seal cavity if necessary.
A
DDITIONAL
D
ISASSEMbLY FOR
D
OUbLE
M
EChANICAL
S
EALS
(FP S
ERIES ONLY
)
To remove the rear seal components (only pumps with double seal),
carefully slide the rear rotating seal, seal washer, the seal o-ring off the
pump shaft and discard. Use the 3/32” Allen wrench to remove the rear
seal driver and spring off the pump shaft and discard.
P
UMP
h
EAD
A
SSEMbLY
(
SEE
S
EAL
A
SSEMbLY
D
RAWINGS PAGES
10-13)
NOTE: when installing the new seal components
make sure that you use all of the components sup-
plied with the replacement seal kit. Using some of
the old components may reduce seal life.
For double mechanical seals only (FP Series
only)
, first install the rear seal components. Note:
this includes the seal washer, the seal o-ring, the
rear rotating seal and the rear seal driver and
spring.
You are now ready to install the stationary seal
into the pump.
a) To install the stationary seal into the hub of the
pump housing, place the pump housing on a clean surface with the hub side up. Inspect the hub
area to ensure that it is clean.
b) Place the flat gasket into the hub of the pump housing. Make sure that it is all the way to the bottom
and is seated evenly.
Figure 9
1265000063
8/21/02
Figure 11