WIK USER INSTRUCTIONS ENGLISH BO2662 5/09
Page 63 of 76
spacer casing [1140], causing recirculation within
the pump and in turn erosion, particularly at its high
pressure end, and decreased efficiency.
2) Install original inner head disc spacers [3645], or
precise replicas, see step 3 under disassembling
casing cover (section 6.7.7.2), and new inner
head expansion gaskets [4590.2] so that they
are arranged as shown in the assembly drawing
(a spacer does not have a particular position
other than between gaskets).
3) Install discharge spacer casing [1140] on casing
cover [1221] (if applicable).
6.9.2.2 Installing Casing Cover
Install lifting-eye in casing cover [1221], lift casing
cover [1221], and move it into place on balance
drum [6230]. Push casing cover [1221] onto balance
drum [6230] as far as possible. Ensure that the
discharge spacer [1140], and expansion
compensator gaskets [4590.2] and disc spacers
[3645] are properly aligned with the casing cover
[1221]. Remove lifting-eye and lifting equipment.
6.9.3 Rotor Alignment
Following installation of a new sleeve bearing, a new
bearing housing, or an internal assembly, rotor
centering in accordance with the following procedure
is necessary. After each installation of the internal
assembly and casing cover, the rotor must be
aligned axially as described below.
6.9.3.1 Alignment Preparation
To prepare the cartridge assembly for rotor
alignment, proceed as follows:
1) Using lifting gear, install the suction end plate
[9322] on the suction spacer [1130]. Remove
lifting gear from suction spacer [1130].
2) Install the radial and thrust bearings as follows:
a) If the sensor disk [2900] is located inboard
of the thrust bearing, install sensor disk and
key.
b) Install lower bearing housings [3200/3230],
bolting, and dowels.
c) Oil all part surfaces before installing.
d) Raise shaft slightly and roll lower sleeve
bearing halves [3020] into bearing housings
[3200/3230]. Place upper sleeve bearing
halves on top of lower halves.
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 installation procedure. Do not
use heat to install a hydraulic thrust collar.
e) Install inner retaining plate (if applicable),
thrust collar spacer sleeve (2460), and thrust
collar key [6700.6] (if installed). Heat thrust
collar [3610] to the part installation heat
specified in section 10.3 Operating
Specification and slide onto shaft.
f) Install thrust collar lock washer [6541] and
lock nut [3712.2] on shaft, tighten nut but do
not bend down ear of lock washer.
g) Install thrust bearing parts:
g1) Lubricate base rings, leveling plates,
and shoes with light oil.
g2) Set bottom halves of base rings on shaft,
and rotate to bottom position.
g3) Set top halves of base rings on shaft
and make certain that ends of leveling
plates interlock properly.
g4) Rotate bottom halves of base rings to
top. Insert shoes and rotate back into
bottom position. Insert shoes in top
halves of base rings.
h) Set top halves of bearing housings on
bottom halves. Install cap screws in flanges
and evenly tighten.
3) Install the cartridge assembly tension flange in
place of the pump half-coupling on the shaft and
secure it with the coupling nut [7411]. Tighten
the jack screws in the tension flange against the
bearing housing until snug. See section 6.7.3,
Figure 6-5
: Tension Flange Arrangement.
4) Attach a hoist to a lifting strap placed at the
cartridge assembly center of gravity and lift the
assembly. Transport the cartridge assembly to
the alignment tool.
5) Insert the coupling end of the cartridge assembly
into the alignment tool. When the nylon strap
binds, place wooden blocks under casing cover
[1221] to support the assembly. Remove the
hoist from the nylon lifting strap and attach it to
an eyebolt in the head, and tension the cable to
support the weight of the assembly. Continue to
push the cartridge assembly into the alignment
tool, using a hydraulic ram if necessary.
6) Install the case stud nuts (6572.2) on the studs
provided on the alignment tool and tighten.
Ensure that a metal-to-metal fit is achieved.
7) Loosen the jack screws on the cartridge
assembly tension flange, then remove the
coupling lock nut (7411) and the tension flange.
8) Install the suction end cover cap screws [6570.3]
and tighten them firmly and evenly.
6.9.3.2 Rotor Radial Alignment
1) Install dial indicator on each end of the shaft
[2100] so that one reads bore for outboard seal
housing and the other reads bore for the inboard
seal housing. Rotate shaft and take readings at
