Assemble The Thrust End (Ball Bearing Pumps) - ITT 3610 i-FRAME Manual

6.6 Reassembly

6.6.3 Assemble the thrust end (ball bearing pumps)

122
353
Figure 72: Thrust bearing assembly
1. Install the cartridge mechanical seal (383) on the shaft (122) and align the mechanical seal pilot
with the seal chamber bore of the casing. Install the mechanical seal studs (353) and hex nuts
(355).
NOTICE:
Do not set the mechanical seal sleeve set screws at the time; endplay must be checked first or
damage to the seal faces could occur.
2. Assemble the inboard labyrinth seal (333A) into the inboard thrust end cover (160):
a) Clean the end cover with a solvent.
b) Fit the labyrinth seal (333A) into the bore of the cover (160).
c) Tap the seal in with a hammer.
NOTICE:
Make sure that the expulsion port is at the 6 o'clock position and is properly seated.
3. Assemble the inboard end cover (160) and the inboard bearing end-cover gasket (360A) onto the
shaft.
4. Assemble the thrust bearings (112A) in a back-to-back arrangement onto the shaft (122):
The bearings are interference fit.
a) 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 force.
b) Install the bearing spacer (443V) if applicable, bearings (112A), the oil ring sleeve (443B), and
the bearing locknut (136) onto the shaft.
c) While the bearings are hot, tighten the locknut by hand with a spanner wrench until the bearing
is snug against the shaft shoulder.
96 3610 i-FRAME API 610 11th Ed/ISO 13709 2nd Ed, API Type BB1 Single-Stage, Axially-Split, Between-Bearing IOM
383
160 360A
333A
355
443V
136
443B
382
112A