EX4500 & EX6100
Reliability You Can Count On!
© 2010 EasyPro, Inc
Pg. 3
PUMP END ASSEMBLY
1. Clean and inspect all pump parts (0-ring, seal seats, motor shaft, etc.).
2. Apply sealant to the bracket bore ID wall and around the seal case - follow sealant mfg. instructions. We recommend using Gas-
gacinch
®
. Silicone sealant can also be used.
3. Press carbon graphite seal into bracket while taking care not to damage carbon graphite face.
4. Place slinger (rubber washer) over motor shaft and mount bracket to motor.
5. Carefully, lubricate the seal seat elastomer OD and impeller hub ID with water. Press the seal seat into the impeller hub making certain
that the ceramic is in evenly — the sealing surface should be parallel with the impeller hub.
6. Carefully lubricate carbon-graphite and ceramic sealing surfaces with CLEAN water. Do not use silicon lubricants or grease!
7. Assemble bracket to motor with four M-bolts
8. Thread impeller onto shaft and tighten! If required, remove motor end-cap and use a screwdriver on the back of motor shaft to prevent
shaft rotation while tightening. Replace motor end cap.
9. Seat large O-ring in volute slot and assemble volute to bracket with seven 1/4-20 x 2
3
/
4
” hex cap screws, washers and nuts. Tighten in a
cross pattern (30 in-lbf).
10. Install drain plug with its O-ring in volute drain hole.
11. Before operating pump, allow a proper cure time for the sealant used in step 2.
DISASSEMBLY
1. Shut off power to motor before disconnecting any electrical wiring from the back of the motor.
2. Disassemble volute from bracket by removing the seven
1
/
4
" - 20 threads per inch x 2
3
/
4
" hex cap screws.
3. Remove cap covering shaft at back of motor and with a large screwdriver, prevent shaft rotation while unscrewing impeller.
4. Remove ceramic piece from impeller. (If you are replacing the seal)
5. Detach bracket from motor.
6. Remove carbon-graphite seal from bracket by pressing out from the back. Do not dig out from the front! (If you are replacing the seal)
DESCRIPTION
MDM P/N
DRAIN PLUG
1000.110 LG
O-RING, DRAIN PLUG
E014B70
VOLUTE
K000.070 LG
LARGE O-RING
1000.061
IMPELLER
1000.05__*
SEAL - BRASS
1000.0415
SEAL - SS316
1000.0414
BRACKET
K000.030 LG
SLINGER
1000.010V
HARDWARE KIT
1000.502
Note: These part numbers are only for
standard models within the EX series.
Consult factory for impeller part number.
VOLUTE
IMPELLER
WASHER &
LOCK NUT
BRACKET
M BOLT
LARGE
O-RING
SEAL
P-BOLT
& WASHER
DRAIN PLUG
& O-RING
SLINGER
MOTOR ILLUSTRATION IS FOR REFERENCE ONLY.
1
1
/
2
" FNPT
2.75
3.50
8.88
2.41
