Mody Pumps G 1006 T - Manual (Page 8)

9. UNSCREW BOTH THE OIL PLUGS (24) AND DRAIN OUT THE OIL FROM THE OIL CHAMBER.
REMOVE OUTER CIRCLIP (50) FROM ROTOR SHAFT AND REMOVE LOWER MECHANICAL SEAL. BE
VERY CAREFUL IN HANDLING THE TUNGSTEN CARBIDE SEAL FACE. LEAVE STATIONARY
TUNGSTEN CARBIDE SEAT IN THE SEAL HOUSING. PULL OUT SEAL HOUSING (23). THE
STATIONARY TUNGTEN CARBIDE SEAL FACE WILL COME OUT WITH THE SEAL HOUSING.
HANDLE THE FACE CAREFULLY. THE UPPER MECHANICAL SEAL IS NOW IN VIEW. REMOVE THE
UPPER SEAL IN THE SAME WAY AS THE LOWER SEAL
10. THE LOWER BRACKET COMPLETE WITH THE ROTOR (11), BEARING (55), BEARING COVER
(16) AND TUNGSTEN CARBIDE SEAT WILL COME OUT WITH THE LOWER BEARING BRACKET.
REMOVE BOLTS (15) AND REMOVE BEARING COVER. PULL OUT ROTOR WITH BEARING FROM
LOWER BEARING BRACKET. (IF THIS IS DIFFICULT USE A HAND PRESS TO REMOVE ROTOR
FROM BEARING BRACKET. ENSURE NO DAMAGE TO THE TUNGSTEN CARBIDE SEAT IN BEARING
BRACKET). THE TC SEAT WITH CUP SEAL HOLDER CAN NOW BE PUSHED OUT FROM THE
BEARING SIDE BY GENTLY TAPPING THE SAME. (USE FINGERS OR A NYLON TIPPED LIGHT
HAMMER ONLY).
11. CHECK BOTH UPPER AND LOWER BEARINGS (10 & 55) FOR ANY RADIAL OR AXIAL PLAY
OR ANY ABNORMAL NOISE WHILE SPINNING THE SAME. CHECK FOR ANY LEAKAGE OF GREASE
THROUGH THE SHIELD OF THE UPPER BEARING. IF BEARING SEEMS WORN OUT OR ANY
GREASE LEAKAGE IS OBSERVED, REPLACE BEARING. (DO NOT USE ANY STANDARD BEARING
PROCURED FROM THE MARKET. THE PUMPS USE BEARINGS WHICH ARE PRE-FILLED WITH A
SPECIAL HIGH TEMPERATURE GREASE AVAILABLE FROM US READILY).
12. THE TOP BRACKET (7) IS HELD IN POSITION BY FOUR STUDS (4) ON THE INNER
CASING. UNSCREW THE NUTS AND REMOVE THE INNER CASING WITH THE HELP OF PULLER
FOR STATOR (T8006). ALTERNATIVELY TWO SCREWDRIVERS MAY BE USED TO PRY THE TOP
BRACKET FROM THE STATOR.
13. THE STATOR IS SHRINK-FITTED IN THE INNER CASING. THE STATOR CAN NOW BE
CHECKED FOR ANY ELECTRICAL FAULTS.
14. IF THE STATOR MEGS LOW BAKE IT IN AN OVEN FOR 3 HOURS AT 300F. MEG OHM TEST
THE STATOR AND ALSO MEASURE LINE TO LINE RESISTANCE. THE RESISTANCE VALUE
SHOULD BE APPROXIMATELY THE SAME BETWEEN THE THREE LEGS/PHASES OF THE WINDING.
PERFORM A HI-POT TEST IF POSSIBLE.