108-A00 page 11/14
8. Install the inboard head o-ring (72) into inboard head (20).
Chemically compatible, high viscosity grease can be used
to hold o-ring to aid installation.
9. Install the inboard head and bearing assembly (20) on the
pump cylinder with the V-notch up, towards the bottom of
the cylinder for right hand builds and down for left hand
builds. See Figure 12. Ensure the head is fully seated and
bolt holes are aligned with threaded cylinder holes.
Figure 12 – Inboard Head Orientation
Failure to use care when handling
magnets can cause personal injury
Strong magnetic
field can cause
personal injury
10. Install key (35A) into rotor/shaft (13) keway. Slide driven
magnet assembly (52) onto rotor/shaft (13). Place washer
(58) and capscrew (59) onto end of shaft and hand tighten.
Torque screw to 12.5 ft-lbf (17 Nm).
11. Install containment shell o-ring into inboard head. Install
containment shell (50) onto inboard head dowel (20).
Rotate containment shell retaining groove towards the top
of the pump as shown in Figure 13. This will align it with
the pin in the magnet housing.
Figure 13 – Containment shell Installation Orientation
NOTICE:
There will be a magnetic attraction between the magnet
housing and the containment shell/driven magnet. Take
care to only hold magnet housing on the rectangular end,
while lowering. Never place hands on round end or
between the magnetic housing and containment shell
while installing.
12. Align magnet housing dowel (57) with containment shell
(50) and begin lowering magnet housing onto containment
shell. Magnet housing may bind on containment shell.
Use light taps with a dead-blow hammer to continue until
magnet housing moves freely. Ensure locating pin is
aligned with containment shell retaining groove and that
holes are aligned with inboard head and cylinder holes.
Light force may be required to hold magnet housing onto
inboard head.
13. Lubricate the Inboard head capscrews (21) with a quality
grade of anti-seize compound and install. Torque to 25 ft-
lbs (34Nm).
14. Install four 3/8-16 UNC, 4 inch long, fully threaded screws
into bearing housing jacking holes. Refer to figure 6 for
location. Thread screws all the way into bearing housing.
15. Align driving magnet assembly (53) with magnet housing
(57). Ensure bearing housing installation screws are
contacting machined pads on magnet housing. See Figure
14.
Figure 14 – Magnet Housing Installation Pads
Failure to use care when handling
magnets can cause personal injury
Strong magnetic
field can cause
personal injury
NOTICE:
Be prepared for strong magnetic attraction between the
driving and driven magnet assemblies. Never insert any
part of body between magnet assemblies or between
magnet and bearing housing.
16. Slowly turn jacking screws counter clockwise to lower the
bearing housing (106) onto the magnet housing (57).
Alternate screw location, while attempting to keep driving
magnet assembly (53) as concentric to containment shell
(50) as possible.
17. Install bearing housing capscrews (106D) and torque to 58
ft-lbf (79 Nm).
18. Rotate power end shaft to ensure free rotation.
