Goulds Pumps 3910 11th ed. - IOM - Manual (Page 41)

RENEWAL OF WEAR PARTS
REPLACEMENT OF SEAL
CHAMBER COVER BUSHING
Seal chamber cover bushing (125) is held in place by a
press fit and locked by three set screws.
Removal of Bushing (125)
1. Remove set screws.
2. Press bushing (125) out of fit toward bearing frame
side of seal chamber cover (184) bore (Fig. 30).
Installation of Bushing (125)
1. Clean bushing fit in seal chamber cover (184)
thoroughly.
2. Chill new bushing (125) using dry ice or other suitable
chilling substance, and install bushing into fit of cover
(184). Be prepared to tap the bushing in place with a
hardwood block or soft faced hammer (Fig. 31).
s
! WARNING
Dry ice and other chilling substances can cause physical
injury. Contact supplier for information and advice for
proper handling precautions and procedures.
3. Locate, drill and tap three new set screw holes on
impeller side of cover (184) equally spaced between
original set screw holes.
4. Install set screws and upset threads.
REPLACEMENT OF WEAR RINGS
Casing (164), impeller (202 and 203) and seal chamber
cover wear rings (230) are held in place by a press fit and
three set screws (222E and 320).
Removal of Wear Rings (164, 202, 203, 230)
1. Remove set screws (222E and 320).
2. Remove wear rings from casing (100), impeller (101),
and seal chamber cover (184) using suitable pry or
puller to force rings from fits.
Rings may also be machined for removal.
$
! CAUTION
Excessive machining can damage ring fits and render
parts unusable.
Installation of Wear Rings (164, 202, 203, 230)
1. Clean wear ring seats thoroughly, insuring they are
smooth and free of scratches.
2. Heat new impeller wear rings (202 and 203) to 82° -
93° C (180° - 200° F) using a uniform method for
heating (e.g. - oven) and place on impeller (101) wear
ring seats (Fig. 32).
$
! CAUTION
Use insulated gloves to handle rings. Ringswill be hot
and can cause physical injury.
3910-1
1th IOM 5/08
41
Fig. 30
Fig. 31
6
Fig. 32