Figure 7-2 Disassembling The Rotary Shaft Seal; Figure 7-3 Detailed View Of The Speed Sensor - Siemens 1PH728 Series Operating Instructions Manual

Notice
Whenever you work on the locating bearing when the three-phase motor is in its
vertical position, support/unload the rotor.
Sealing the bearings
The outer bearing seal comprises a rotary shaft seal.

Figure 7-2 Disassembling the rotary shaft seal

Pull the rotary shaft seal together with the bearing cap and/or end shield off the
shaft.
Disassembling the speed sensor

Figure 7-3 Detailed view of the speed sensor

(1) Shaft
(2) Speed sensor
SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728.
(1)
(2) (2)
(3)
Maintenance
7-11