PPFFMM//PPFFPP//PPFFVV VVaappoorr SSeeaall aanndd BBeeaarriinngg RReeppllaacceemmeenntt IInnssttrruuccttiioonnss
DDiissaasssseemmbblliinngg tthhee ppuummpp
Remove the impeller housing cover by
turning it clockwise.
Insert a 3/32” pin into the hole in the shaft.
Holding the pin, remove the impeller from the shaft
by turning counterclockwise.
Spin the impeller until the hole in the bottom of
shaft can be seen through the square slot in the
impeller housing.
Once the impeller is removed, the bottom portion of
the shaft will be exposed.
Lightly tap the bottom of the shaft on the ground.
This will partially push the bearing from
the pump head.
Picture showing bearing assembly partially removed
from pump head.
Remove the impeller housing by turning it
clockwise.
The lower inner tube and center bearing will likely
come out when removing housing.
Again, lightly tap the bottom of the shaft on the
ground the completely remove the bearing assembly
from the pump head.
Picture illustrating bearing completely removed from
pump head.
Picture illustrating shaft with bearing assembly,
impeller housing with lower inner tube and center
bearing removed from pump tube.
Place pump head in a vise and remove the intake
tube by unthreading clockwise.
Remove upper inner tube from head.
Picture illustrates pump completely disassembled.
RReeppllaacciinngg vvaappoorr sseeaall
Top view of pump head.
Vapor seal seen in center.
Bottom view of pump head.
Using any type of rod (0.375” maximum diameter),
tap old vapor seal out of seat from bottom of head.
Top view of new seal (tapered side)
Bottom view (grooved side)
Install new vapor seal with tapered side up.
RReeppllaacciinngg bbeeaarriinngg aasssseemmbbllyy
Using no larger than a 3/4" diameter rod,
tap seal until fully seated in counter bore.
Insert a 3/32” pin in to the hole
in the bottom of shaft.
While holding bearing assembly with one hand
and the other end with pin,
unscrew shaft from bearing assembly
(turn counterclockwise).
Simply thread shaft onto new bearing assembly
(turn clockwise).
Note: Hole in shaft should be opposite from bearing.
RReeaasssseemmbblliinngg tthhee ppuummpp
Shaft/bearing assembly must be carefully inserted
through the center of the vapor seal.
Carefully pull the shaft straight through the
vapor seal until the bearings begin to enter
the pump head.
Carefully turn the shaft and head upside down and
press the bearing assembly into the head.
This should press in by hand rather easily.
Special attention should be given not to
bend the shaft.
Using a lubricant (such as Vaseline) lubricate the
o-rings on the inner upper tube and center bearing.
Slide the upper inner tube up the shaft and press
the tube into the head.
You should feel the two o-rings snap into place.
Slide the lower inner tube up the shaft and press
onto the adjacent side of the center bearing.
Insert outer tube over shaft assembly.
The outer tube will want to “hang up” on the
guide bearing.
Reinstall the impeller housing cover
by turning counterclockwise
Slide outer tube all the way to the head and tighten
(turn counterclockwise)
To install the impeller you will need to hold
the pumps coupling…
and with your other hand screw the impeller onto
the pumps shaft (turn clockwise).
Install impeller housing cover
(turn counterclockwise).
Pump coupling/shaft should turn freely.
Questions? Contact FTI Technical Service department at 1-800-888-3743
or by e-mail at techservice@finishthompson.com
Loading...