Flowserve SVCN 7, Установка, эксплуатация и обслуживание

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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
4.5 ASSEMBLY
4.5.1 HEAD-ROTOR ASSEMBLY
NOTE
If you only disassembled the pump to replace the mechanical
seal, and the bearing housing is still intact, then begin
reassembly at step 14 on page 4-11.
1. Install oiling ring retainer (356) and oiling rings (2889A), if installed, on shaft (1). Secure
retainer to shaft by tightening set screws.
CAUTION
Bearings should be heated using either a dry heat convection
oven or an induction heater which slowly heats the bearing
and prevents magnetizing. Do not heat bearings with a torch
or oil bath.
Ensure that the thrust bearings (3036B) are assembled as
illustrated in Figure 4-3 below with the wide flanges of the
outer race in contact in-between the two bearings.
Figure 4-3 Thrust Bearing Assembly
2. Heat radial bearing (3036A) and thrust bearing (3036B) to 200-230°F (95-110°C) and slide
them up against their shoulders on the shaft (1).
3. Install the thrust bearing lock washer (3150) and lock nut (453) as follows:
a. Slide thrust bearing lock washer onto shaft, then thread lock nut onto shaft hand tight.
b. Spin outer races of thrust bearing several times, then tighten the lock nut. The lock nut
should be tightened such that the outer races of the thrust bearing do not turn
independently when spun, but can be moved independently by hand.
c. Allow the thrust bearings to cool to ambient temperature.
d. Loosen the thrust bearing lock nut to hand tight, then retorque the lock nut to the torque
valuespecified in table below
Table 4-1 Thrust Bearing Lock Nut Torque
SKF Bearing Designation Lock nut Torque
- 4-9 - DO2604-13