Goulds Pumps ICM - IOM - Manual (Page 26)

Installation and Operating Instructions
Model ICM/ICMP, for life grease lubrication
9330-050-en Revision 05
TM 5409 MPE/Re/Wm Page 18 Date 03/2003
7.6.5 Dismantling the plain bearing
The plain bearing cartridge 310 is one unit which - if
necessary - is replaced completely.
7.7 Notes on assembly
All the details in Section 7.5 are to be observed, in
particular the notes on safety.
Good mechanical engineering practice is to be ob-
served for assembly work.
Use original spare parts. See also Section 2.3. Do not
use defective parts.
Treat close-tolerance areas (not stainless steel com-
ponents) with a corrosion inhibitor. Grease screw
threads prior to assembly.
Check whether all parts fit and only then perform as-
sembly.
Important dimensions are to be checked before as-
sembly, e.g. by fitting parts together as a test.
These important dimensions are centerings, bearing
seats or bearing clearances.
During assembly, gaskets 400, 401 and 406 are to be
replaced, intermediate rings 509 must be replaced.
Prior to assembly, remove any metallic particles ad-
hering to parts fitted with magnets.
7.8 Assembly
A complete assembly operation is described in the
following.
Sub-sections can be deduced from this.
7.8.1 Bearing pedestal
¾ Press both radial ball bearings 321 onto the drive
shaft 213.
¾ Insert key 940/1 into the drive shaft.
¾ Install the pre-assembled drive shaft into the bear-
ing pedestal from the motor side.
¾ Insert wavy spring washer 953/1 into the bearing
pedestal.
¾ Mount rear bearing cover 361 with the hex. socket
screw 914/2.
¾ Mount support bracket 183 with hex. screws 901/2
and toothed lock washers 936/2.
The attachment slots of the support surface face
towards the housing.
7.8.2 Drive magnet assembly
¾ Clamp the pre-assembled bearing pedestal on the
shaft end in the vice so that the carrier groove ,is
facing upwards.
¾ Mount drive magnet assembly 858 onto the drive
shaft so that the driver cams engage.
¾ Screw in hex. socket screw 914/1 with tooth lock
washer 936/1. Secure thread, with a drop e.g of
Loctite 234. A hex. socket screw key with a mini-
mum length of 120 mm is required for tightening.
7.8.3 Plain bearing pedestal with impel-
ler, inner magnet assembly and
plain bearings
¾ Insert the plain bearing cartridge 310 into the cen-
tering of the plain bearing pedestal 339.
¾ Move the plain bearing cartridge into a position
which permits all 3 hex. screws 901/1 to be in-
serted.
¾ Tighten screws with an open-jaw wrench.
For tightening torques, see Section 1.2.
¾ If the parallel pin 562/1 in the clearance bore in the
inner magnet assembly 859 has to be replaced,
drive it in carefully. It is to protrude by about 3 mm
towards the impeller.
¾ Cut out a small corner on the inside diameter of
the intermediate ring 509/1 so that a recess for the
parallel pin 562/1 is produced.
¾ Then mount the intermediate ring 509/1 onto the
shaft of the inner magnet assembly 859.
¾ Apply Anti-Seize paste to the shaft and impeller
holder.
¾ Place inner magnet assembly on the workbench
and mount the pre-assembled unit plain bearing
pedestal / plain bearing cartridge from above onto
the inner magnet assembly. Make sure that the
parallel pin 562/1 engages in the carrier groove
of the plain bearing cartridge. To facilitate align-
ment, the plain bearing pedestal can be turned to
and fro slightly.
¾ Mount 2 nd intermediate ring 509/2 onto the drive
shaft.
¾ Mount distance washer 551/1.
¾ Insert key 940/2.
¾ Mount impeller 230.
¾ Insert PTFE O-ring 912/1 into the groove of the
impeller nut 231.
¾ Tighten impeller nut. Secure it with a drop of e. g.
Loctite 234. Countercheck the inner magnet
assembly with a strap wrench.
For tightening torques, see Section 1.2.