Goulds Pumps AF (Axial Flow) (6"-36) MXR Bearings" - Manual (Page 50)

48 AF (6-36) IOM
BACK-PULLOUT / ELBOW OR ELBOW WITH
CASING / LINER (OPTION)
Elbow
13. Set the pump down on a smooth flat surface to
stabilize it for disassembly. Loosen the impeller
adjusting bolts (356A) so that they are clear of the
rear elbow flange. Remove the bolts (789L, 799O)
that attach the back-pullout (903A) to the elbow
(315A). With the elbow held in place, slide the back-
pullout from the elbow. Remove the face o-ring
(351) between the elbow and the back-pullout,
discard and order a replacement. Be sure to order
the correct o-ring material, see Fig. 36.
Elbow with Casing
14. The 700mm & 36” sizes come with a separate
casing. Remove the bolts (799C) and nuts (799D)
that secure the casing (100) to the elbow (315A).
Remove the casing and discard the mating o-ring or
gasket (351A). Loosen the four screws (356A).
Remove the bolts (789l & 799O) that secure the
back-pullout (903A) to the elbow and discard the o-
ring (351), see Fig. 37.
Liner (option)
15. If the elbow (315A) or casing (100) has an optional
liner (103A) now is the time to remove it. Four
tapped holes in the liner flange are used with screws
to jack the liner from its seat. If the liner has been in
service this may require considerable effort due to
corrosion. If the liner is worn or deeply eroded,
order a replacement for re-assembly, see Fig. 38.
IMPELLER
Standard Impeller
16. Remove the bolts (198) that hold the shaft washer
(199) in place. Remove the shaft washer. To
remove the impeller (101), use a wooden mallet and
gently tap it to break it loose from the shaft (122).
Pull the impeller from the shaft, retain the shaft key
(178), see Fig. 39.
Fig. 36
789L
799O
356A
351
315A
BACK-PULLOUT 903A
REAR
ELBOW
FLANGE
Fig. 38
315A
103A
JACKING
SCREWS
Fig.39
101
178
122
199
198
Fig. 37
789L
799O
356A
351
100
BACK-PULLOUT 903A
351A
799D
799C
315A