CAUTION:
Risk of physical injury from hot bearings. Wear insulated gloves when using a bearing heater.
NOTICE:
Do not use a torch and do not use force.
b) Coat the internal surface of the bearings with the lubricant that is to be used in service.
c)
Assemble the radial-end bearing (168) onto the shaft (122).
2.
Install the oil rings and bearings:
a) Install the oil rings on the shaft.
Pump type
Oil rings
SX, MX, LA, LX, XLA, and XLX 2
SA and MA
1
b) Assemble the thrust bearings (112) in a back-to-back arrangement onto the shaft (122).
The bearings are interference fit.
c)
Preheat the bearings to 120°C | 250°F with an induction-type bearing heater.
Be sure to also demagnetize the bearings after heating.
CAUTION:
Risk of physical injury from hot bearings. Wear insulated gloves when using a bearing heater.
NOTICE:
Do not use a torch and do not use force.
d) Install the bearings (112A) and the bearing locknut (136) onto the shaft.
e) While the bearings are hot, tighten the locknut by hand with a spanner wrench until the bearing
is snug against the shaft shoulder.
f)
Allow the bearing assembly to cool slowly to room temperature.
Do not rapidly cool the bearings with compressed air or other means.
g) When the bearing assembly is fully cooled,remove the locknut, install the lockwasher (382),
and install the locknut.
h) 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 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.
i)
Check the condition of the outer races by rotating the bearings by hand in opposite directions:
6.6 Reassembly
94
Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Instal-
lation, Operation, and Maintenance Manual
Summary of Contents for Goulds Pumps 3700
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