IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 20 | 48 REVISION NO.1
6.1.31 Take out circlip (485) at DE and NDE fitted in the bearing housing if found
damaged (in case of reinforced bearing arrangement only).
6.1.33 Casing ring suction side (190), casing ring delivery side (191) are to be removed
only if they are worn out and need replacement.
6.2 RE-ASSEMBLY
This procedure covers re-assembly of pump after complete dismantling of the pump.
Before assembly, all the parts should be thoroughly cleaned with kerosene, petrol or
benzene to remove the dust, rust, etc. After cleaning the necessary parts should be
replaced.
6.2.1 Mount the double row angular contact ball bearing (2630001) at driving end for unit
5, 7, 9, 11. In case of unit 11 A, 11B, 13 mount the double row angular contact
ball bearings (2 nos.) in back to back position.
6.2.2 Mount non-driving end deep groove ball bearing (2600001) on the shaft for unit 5,
7 and 9. In case of unit 11 and 13 mount inner race of roller bearing (264).
CAUTION:
a) Use Arbor Press while fitting the bearings. However, it is recommended that
bearing should be heated in oil bath at temperature 70 to 80
0
C and then fitted.
(If hot oil is not available use ARBOR PRESS).
b) Slide inboard ball bearing on shaft by hand to make sure that it is square with
shaft. Press even the inner race of the bearing until the bearing is seated firmly
against the shaft shoulder.
c) Do not use hammer to fit the bearings. Do not damage the shaft surface
especially where it contacts the oil seal.
6.2.3 Tighten bearing lock nut (336) after inserting the washer for bearing locking (625) in
proper position. Fold one lip of lock washer in slot of bearing lock nut to lock it.
6.2.4 Fit the oil seal (500.1) in the bearing cartridge/bearing housing and ‘O’ ring (523)
on the cartridge/housing.
6.2.5 Insert the circlip (485) in the groove provided on the bearing housing (240) in case
of reinforced bearing arrangement only. Check returning duct holes in bearing
housing and bearing cover at DE are clean.
6.2.6 Insert the shaft (180) along with the bearings and cartridge into the bearing housing
from the driving end and tighten the hex. nut for studs on bearing housing for
bearing cartridge till the gap between cartridge and housing is 3 mm.
6.2.7 Replace oil seals in bearing cover (270) if they are removed.
6.2.8 Put the packing (514) at the driving end and tighten the bearing cover (271) with
the help of hex. screws.
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