12
B-9000 Series
Assembly
Use both pages of the assembly draw-
ing during the reassembly process to
assure correct orientation of all parts.
Considerable care should be taken
to prevent wedging or jamming of parts.
Never force the parts together. They will
drop into place if properly aligned.
Note: If the pump will not turn freely
after each component is installed,
then the last piece installed needs
additional attention or replacement.
Provide a can of compatible lubricant,
preferably SAE-50 motor oil or mineral oil.
If the pump is to be used at temperatures
greater than 212°F (100°C), lubricant
should be chosen for high temperature
service. Shaft, arbor, dowels, and gears
should be lubricated prior to assembly.
Take care to remove excess fluid from
between the plate surfaces using a clean
towel. Threads should be lubricated with
a temperature-rated, anti-seize compound.
For service under 212°F (100°C), a moly-
disulfide-based grease may be used.
During assembly, considerable care
should be taken to prevent wedging or
jamming of close-fitting components.
Never force the parts together. They will
drop into place if properly aligned.
Caution:
Please review the precautions
listed on Page 4 for Magnetically
Coupled Pumps.
1.
Place the front plate (8) on a flat
surface with the inner surface of
the plate facing up.
2.
If the arbor (9) was removed, press
arbor into the front plate (8) using
the driven gear (6) as a guide for
pressing the arbor perpendicular
(upright) into the plate.
3.
Push the slip-fit dowels (10) into the
dowel holes in the front plate (8).
4.
Place the driven gear (6) on the
arbor (9).
5.
Place the gear plate (3) over the
dowels (10) and driven gear (6).
On .05 through 2.4cc/rev models,
the gear plate may be installed in
either direction. On models larger
than 2.4cc/rev, align the clearance
hole for the fastener (19) with the
corresponding tapped hole on
the front plate.
6.
Install the drive shaft (2) from the
opposite side of the front plate.
7.
Install the round key (4) into the
keyway on the drive shaft.
8.
Slide the driving gear (5) onto the
drive shaft and into the gear plate.
Take care to align the keyway in the
gear with the key (4). The key may
need to be held down to prevent it
from being damaged by the gear.
9.
Install the retaining ring (16) on the
rear plate end of the drive shaft (2).
10.
Install the rear plate (7).
11.
Install the socket head screws (19)
through the rear plate (7) and torque
to 50% of recommended torque
(see table page 14) using a cross-
ing pattern. Check for free rotation
of the gears. If acceptable, continue
to torque to full recommended
torque. Again, check for free rotation
of the gears.
12.
Install the socket head screw (20)
through the rear plate (7) and torque
to recommended value.
13.
Install the seal onto the drive shaft (2).
NOTE:
To facilitate assembly of the shaft
seal, place the pump on a flat surface
with the shaft in a vertical position.
a) Mechanical Face Seal Pumps:
• The mechanical seal (13) will be
installed onto the drive shaft (2) with
the carbon end facing away from
the front plate (8). Take care when
pressing the seal onto the shaft, as
the elastomer can be damaged by
the keyway or shaft edge.
• On the .05 through 2.4 cc/rev models,
align the set screws with the grooves
machined in the drive shaft (2), then
tighten the set screws. On larger
models, the seal will slide up the
shaft until it rests against the collar.
• On 4.5 cc/rev and larger models,
install the o-ring (15) into the recess
in the seal housing (11). If necessary,
use heavy silicone grease to keep
the o-ring in place.
• On 4.5 cc/rev and larger models,
install the carbon seat into the
mechanical seal with the exposed
rib of the seat toward the ceramic
seat of the seal assembly. The
notches of the carbon seat should
mate with the tabs of the mechani-
cal seal. Use heavy silicone grease
to keep the seat fitted to the
mechanical seal.
