Overhaul Of 6.9 Kv Vertical Motors

Overhaul Of 6.9 Kv Vertical Motors

Removal of the motor from the pump (refer to fig. 1-6 and 1.7):

1.    Disconnect the following

a.    The power leads from the motor terminal in the main terminal box.
b.    All auxiliary leads.
c.    The water inlet and outlet piping from the bearing oil cooler.

2.    Drain the oil from the bearing oil reservoir.
        Drain the water from the oil cooler.

3.    Uncouple the motor from the pump.

4.    remove the bolts which secure the motor to the motor stand.

 

FIG. 1-6

NAME OF PARTS	ITEM	NAME OF PARTS	ITEM
OIL WEIR	21.	RING NUT
BEARING SEAL	22.	SPACER RING
SHAFT	23.	THRUST RUNNER
COOLING WATER INLET	24.	THRUST STOPPER (UP)
COOLING WATER OUTLET	25.	GUIDE BEARING
DETECTER GUIDE	26.	DASIL BOARD
INSULATOR	27.	COOLING TUBE
		LIFTING DEVICE
		OIL FILLER (AIR BREATHER)
		OVERFLOW PLUG
		OIL LEVEL INDICTOR
		OIL POT
		THRUST BEARING
		SPACER
		OIL DRAINAGE
		OIL OUTLET PIPE
		BEARING GUIDE
		BEARING SUPPORT
		JACKING SCREW KEEPER
		JACKING SCREW

 

FIG. 1-7

Upper Bearing Dis assembly

(Refer to Fig. 1-8)
(1)     Remove the bearing seal.(Refer to Fig. 1-9)
(2)     Remove the oil weir.
(3)     Remove the lower guide bearing using by stud bolts and jack screw.
(4)     Remove the upper bearing seal.

.

Fig. 1-8

 

Fig. 1-9