ITT 3610 i-FRAME Manual page 99

d) Allow the bearing assembly to cool slowly to room temperature.
Do not rapidly cool the bearings with compressed air or other means.
e) When the bearing assembly is fully cooled, remove the locknut, install the lockwasher (382),
and install the locknut.
f) Hand-tighten the locknut with a spanner wrench. Do not over-tighten the bearing. Tap the end
of the spanner wrench with light strikes from a dead blow hammer while you note the location
of the next available lockwasher tab that aligns with the slots in the locknut.
The turning resistance of the nut increases as it tightens. Plan the alignment of the lockwasher tab
with the locknut fully tightened. If the locknut is still turning with light strikes with the hammer, then
continue to tighten the locknut until the next available tab is aligned with a slot. Do not use heavy
strikes with the hammer. If it is not possible to reach the next tab, then loosen the locknut to align
with the previous tab.
g) Check the condition of the outer races by rotating the bearings by hand in opposite directions:
• The outer races generally cannot be counter-rotated by hand, but if they do move, the resist-
ance must be high.
• If the outer races are loose, the bearing is not properly seated and must be retightened.
h) When you have achieved the proper bearing assembly, set the lockwasher tab in the slot in the
locknut.
469J
Figure 73: Thrust bearing housing assembly
5. Install the bearing housing (134) over the bearings. Finger-tighten the nuts (427J) on the studs
(371T). Insert the dowel pins (469J); then tighten the nuts (427J).
The bearing housing is doweled to the casing (100) during the original build to assure the correct
running position of the shaft.
NOTICE:
The bearing housing flange must fit metal-to-metal (no gap) to the bearing saddle flange.
6. Tighten the inboard end-cover capscrews (371D).
7. Install the bearing end cover (160) with the end-cover capscrews (371C).
8. Install the oil ring (114A).
9. Assemble the outboard labyrinth seal (332C) into the outboard thrust end cover (109A):
a) Clean the end cover with a solvent.
3610 i-FRAME API 610 11th Ed/ISO 13709 2nd Ed, API Type BB1 Single-Stage, Axially-Split, Between-Bearing IOM
134 114A 360A 109A
371D
134
371T
371C
332C 785C
113Q
113R
427J
6.6 Reassembly
550A
113R
134
97