Mody Pumps G 706 T_316SS User Manual
Page 8
9. THE OIL DIAPHRAGM (68) IS NOW IN VIEW. UNSCREW BOTH THE OIL PLUGS (76) AND
DRAIN OUT THE OIL FROM THE OIL CHAMBER. UNSCREW SOCKET HEAD SCREW (18) AND
REMOVE OIL BAG RING (20). TURN OIL DIAPHRAGM INSIDE OUT AND REMOVE SMALL OIL
CLAMP BY UNSCREWING SCREW (43). REMOVE OIL DIAPHRAGM. SLIDE OFF CAP FOR CIRCLIP
(73), OUTER CIRCLIP (74) FROM ROTOR SHAFT AND REMOVE LOWER MECHANICAL SEAL. BE
VERY CAREFUL IN HANDLING THE SILICON CARBIDE SEAL FACE. LEAVE STATIONARY
SILICON CARBIDE SEAT IN THE SEAL HOUSING (38). UNSCREW FOUR NUTS (48) AND PULL
OUT SEAL HOUSING (38). THE STATIONARY SILICONN 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. REMOVE THE FOUR NOS. DEEP SEATED CAP SCREWS (18) THAT HOLD THE LOWER
BEARING BRACKET AGAINST THE INNER CASING. THERE ARE FOUR NOS. TAPPED THROUGH
HOLES IN THE LOWER BEARING BRACKET. BY USING THE TOOLS (T9503 -- 2 NOS.) THE
LOWER BRACKET COMPLETE WITH THE ROTOR (11), BEARING (78), BEARING COVER (14)
AND SILICON CARBIDE SEAT WILL COME OUT WITH THE LOWER BEARING BRACKET. REMOVE
BOLTS (80) 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 SILICON 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 & 78) 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 TWO STUD BOLTS (5) ON THE INNER
CASING. UNSCREW THE NUTS AND REMOVE THE INNER CASING WITH THE HELP OF PULLER
FOR STATOR (T8005). 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.