3.
Remove the other half of the coupling (118) from the pump shaft (122) by removing the set screw
located above the key. Remove the coupling key.
4.
If the pump was not supplied with a main shaft oil pump (219), remove the hex cap screws (370N)
to remove the adapter cover (119C).
5.
If the pump was provided with axial proximity probes, remove the connection heads from both sides
of the filler plate (441A). The wires to the axial proximity probes will be exited through the cover filler
plate (113J). If axial proximity probes were not provided, go to step 8.
6.
Remove the hex cap screws (370W) to remove both cover filler plates (113J).
7.
Access to remove the axial proximity probes will be through the window on each side of the filler
plate (441A). Loosen the nut on the axial proximity probe and unscrew each axial proximity probe
from the filler plate (441A). Remove the axial proximity probes from the bearing housing assembly.
8.
Remove the hex cap screws (370V) to remove the filler plate (441A). The shim pack (390C/390M)
can be removed at the same time. O-rings (412M) will remain on the filler plate (441A).
9.
Remove all instrumentation from the upper and lower half bearing housing (134A). Plug any open
connections.
10. Remove oil feed piping from the lower half bearing housing (134A).
11. Remove drain piping from the lower half bearing housing (134A).
12. Remove the two taper pins between the upper and lower half of the bearing housing (134A).
13. Remove the hex cap screws that connect the upper and lower half of the bearing housing (134A).
14. Tighten the two jack bolts on the horizontal parting flanges of the bearing housing (134A) in order to
separate the two halves.
15. Remove the top half of the bearing housing (134A).
16. Remove the floating oil seal (123G) from the outboard end.
17. Loosen the set screw (222Z) from the thrust collar nut (283). Use the flats on the thrust collar nut
(283) to loosen and remove from the shaft (122). Note the thrust collar nut (283) is threaded to tight-
en against rotation. For CCW pump rotation (when viewed from the drive end) the thrust collar nut
(283) has a left hand thread. For CW rotation, the thread is right hand.
18. Remove the floating oil seal (123G) from the inboard end.
19. Remove the inboard and outboard ends of the tilt pad bearing (280). The thrust collar will remain on
the shaft.
20. Reassemble the thrust collar nut onto the shaft to hold the thrust collar in place. Tighten to hand
tight.
21. Remove the two socket head cap screws that connect the upper and lower halves of the sleeve
bearing (117).
22. Remove the upper half of the sleeve bearing (117).
NOTICE:
There is an anti-rotation pin on the lower half of the sleeve bearing (117) at the parting flange
of the bearing frame (134A).
23. Remove the dowel pins (469J) that hold the lower half of the bearing housing to the casing flange.
6.4 Disassembly
80
3610 i-FRAME API 610 11th Ed/ISO 13709 2nd Ed, API Type BB1 Single-Stage, Axially-Split, Between-Bearing IOM
Summary of Contents for 3610 i-FRAME
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