WIK USER INSTRUCTIONS ENGLISH BO2662 5/09
Page 50 of 76
9) Disassemble double thrust bearing [3032] as
follows:
a) Remove thrust bearing shoes from top half
of base rings. Then remove top half of
base rings with leveling plates attached.
b) Rotate bottom half of base rings to top.
Remove shoes and lift off bottom halves of
base rings with leveling plates attached.
The CCW rotating shaft [2100] has right-
hand threads on the coupling end and left-hand
threads on the outboard end. Threads on the CW
rotating shaft are opposite of this.
c) Remove thrust collar locknut [3712.2] and
lock washer [6541] from the shaft.
If your pump is equipped with a hydraulic
thrust collar, then refer to the coupling and thrust
collar installation drawing at the back of this
manual for removal procedure. Do not use heat to
remove a hydraulic thrust collar.
If the thrust collar will not slide easily, apply heat
evenly to both sides using a torch with a number
10 Rosebud head. Start from the outer periphery
and work continuously in a circular path toward the
center. For installation, use an oven, hot oil bath,
or a torch as above. Overheating or uneven
heating can distort the collar. See installation heat
given in section 10.3.
d) Remove the thrust collar [3610], thrust
collar key [6700.6] (if installed), and thrust
collar spacer sleeve [2460].
e) Remove inner retainer plate (if applicable).
10) Lift shaft slightly. Rotate bottom halves of
sleeve bearings [3020] to top and remove.
11) Support bottom halves of bearing housings
[3200, 3230] with lifting equipment if
necessary.
12) Remove housing dowels, bolting, and lower
halves of housings.
13) If the sensor disc [2900] is located inboard of
the thrust bearing, remove sensor disc [2900]
and key.
14) Slide deflector [2540] or Inproseal rotors and
stators off of the shaft [2100] with their O-rings.
If the stationary oil baffles or oil seal rings are
solid rings, then slide them off of the shaft with
their O-rings.
6.7.6 Mechanical seal
6.7.6.1 Removing seal unit
Remove the seal unit in accordance with the seal
manufacturer's installation and assembly drawing
in the back of this book.
6.7.6.2 Removing seal housing
To remove either inboard or outboard seal housing
(if installed) follow the task outline below:
1) Comply with instructions under removing seal
unit (section 6.7.6.1) above.
2) Disconnect all piping (if installed) from seal
housing.
3) Remove cap screws from seal housing, attach
lifting equipment (if required), use jackscrews,
if holes are provided, and remove housing.
4) Remove seal plate gasket [4590.1].
5) Detach lifting equipment from housing and
move it to workbench.
6) If opposite end of pump is also equipped with
seal housing, repeat steps at opposite end of
pump.
6.7.7 Casing cover removal and disassembly
6.7.7.1 Removing casing cover
To remove the casing cover [1221] from the
cartridge assembly, proceed as follows:
1) Remove any piping or wiring obstructing
removal of casing cover [1221], if applicable
(see assembly and piping drawings in the
back of this manual).
2) Install lifting eye in tapped hole on top of
casing cover [1221], and complete
preparations for lifting casing cover [1221],
then work casing cover [1221], off of balance
drum [6230].
3) Transport casing cover [1221] with balance
drum bushing [1600] and diffuser (if
applicable) attached to shop area or set it
aside.
6.7.7.2 Disassembling casing cover
To disassemble the casing cover [1221], proceed
as follows:
1) Remove:
a) Discharge diffuser (if applicable),
b) Inner casing cover expansion gaskets
[4590.2] and inner casing cover gasket
disc spacers [3645], and
c) Casing cover gasket [4590.3]
