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Xylem JABSCO 777 Serie Manual De Instalación Y Funcionamiento página 3

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  • ESPAÑOL, página 15
SERVICE INSTRUCTIONS
DISASSEMBLY
1. Remove end cover screws, end cover and gasket.
2. Grasp hub of impeller with water pump pliers and withdraw
from body.
3. Remove cam screw and cam; clean sealant from cam and
body bore.
4. Remove wearplate.
5. Insert screwdriver between OD of outer bearing seal and
bearing bore and pry seal out.
6. Remove bearing to body retaining ring.
7. Press on impeller drive end of shaft to remove shaft and
bearing assembly.
8. Using extreme care not to damage body bore, insert screw-
driver between OD of inner bearing seal and bearing seal bore
and pry out seal.
9. Lip seal versions: Press seal out of body towards impeller
bore.
Face seal versions: Remove ceramic seal seat out of body
towards impeller bore.
10. Remove bearing shaft retaining ring.
11. Support bearing inner race, press on drive end of shaft to
remove shaft from bearing. Do not attempt to remove bronze
bushing which is pinned to shaft.
12. Inspect all parts for wear or damage and replace where
necessary.
EXPLODED VIEW
Vue éclatée / Explosionszeichnung / Vista esplosa /
Explosietekening / Sprängvy / Vista explotada
2
8
7
6
15
ASSEMBLY
1. Lubricate inner bearing seal lip with grease and press into
body bearing seal bore with lip facing away from bearing bore.
2. Press shaft into bearing, using care to support inner race of
bearing.
3. Install bearing to shaft retaining ring with flat side toward
bearing.
4. Position slinger in body drain area. Insert splined end of
shaft through bearing bore and guide slinger over shaft until
bearing contacts body. Align slinger with raised shoulder on
shaft as the shaft/bearing assembly is pressed the last 1/4"
(6mm) into the bearing bore.
5. Pressing on bearing outer race, install bearing into bore.
6. Install bearing to body retaining ring in body groove with flat
side toward bearing.
7. Lubricate outer bearing seal lip with grease and press into
bearing bore until it is flush with the body.
8. Lip seal versions: Lubricate OD and lip of seal, then push
into place, using care not to damage or cut seal lip. (Lip faces
impeller bore.)
Face seal versions: Lubricate rubber grommet in ceramic seal
seat with water and install on shaft, grommet toward bearing.
Install seal (carbon toward ceramic seat) in seal bore and press
flush with bottom of impeller bore.
9. Install wearplate in body bore, aligning slot in wearplate with
dowel pin in body.
10. Apply a thin coat of sealant to cam screw threads and top side
of cam and install in body with cam screw.
11. Lubricate impeller bore and end surfaces of impeller with light
coat of water pump grease and start impeller into bore with a
rotary motion until splines engage, then push into bore.
12. Install gasket and end cover and secure with end cover screws.
3
1
12
10
9
OR
11
16
3
5
4
13
14
18
17

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