108-A00: Page 9/12
MAINTENANCE
MAGNET HOUSING DISASSEMBLY
1. Remove the four housing/adapter capscrews (54B), and
pull the motor, motor adapter (86) and outer magnet (53)
from the magnet housing (57).
2. Remove the motor adapter capscrews (56), and the motor
adapter (86) from the motor.
3. Place a flat wrench or “plate” between the three bushing
capscrews and the “C” face of the motor. Loosen the
three Capscrews located in the bushing (87) allowing them
to bottom out against the flat wrench or “plate” and assist
in removing the outer magnet. If room allows for the
screws to be removed completely, the bushing is predrilled
with jacking holes for the purpose of removing the outer
magnet from the bushing.
4. When outer magnet has been removed from the bushing,
loosen setscrew and remove bushing and keyway from the
motor shaft.
5. Pump and magnet housing disassembly is complete.
PUMP ASSEMBLY
NOTICE:
Follow all hazard warnings and instructions provided in
the "maintenance" section of this manual.
Hazardous or toxic
fluids can cause
serious injury.
Containment can failure will permit fluid
leakage and can cause serious injury.
Before reassembling the pump, all parts should be thoroughly
cleaned and inspected for wear, damage, and replaced as
necessary. Remove any burrs from the rotor and mating
cylinder (SMVP) or liner (MVP).
NOTICE:
The containment can (50) must be replaced if any
corrosion, cracking, wear or other damage is present.
1. Begin assembly on the outboard side of the pump, by
laying the pump cylinder (12) on a flat surface with the
intake port to the LEFT.
Figure 5 – SMVP Models
2.
In
stall the disc (71) on the outboard end of the cylinder with
the disc holes positioned as shown in Figure 5. Use the
dowel locator pin hole to locate the disc.
3. Install a new head seal ring / O-ring (72) in the groove
provided between the disc and the cylinder.
4. Inspect both sleeve bearings (24) for damage or wear. If
damaged, bearings MUST be replaced. If the inside
diameter of the bearing measures 1.074" (27.28mm) or
greater at any point around the entire circumference,
bearings MUST be replaced. To replace bearings:
a. Using an appropriately sized arbor press, remove the
old bearing from the head.
b. To aid installation and prevent damage, heat the head
in an oven to 200°F (93°C).
c. Coat the new bearing with a quality grade of bearing
grease, and place it on the inside face of the head
with the notched end UP.
Align the notch in the
bearing with the groove in the head.
d. Using an arbor press, CAREFULLY press the bearing
into the head until it is flush with the inside face of the
head. Ensure that the bearing does not become
misaligned during the pressing activity.
5. Install the outboard head and bearing assembly (23) on the
pump cylinder with the V-notch down, towards the bottom of
the cylinder. Use the head dowel pins for proper alignment.
6. Lubricate the four outboard head capscrews (21 A) with a
quality grade of anti-seize compound and install, torquing to
15 lbs-ft(20.3Nm).
7. Install a new bearing cover seal ring (26) in the groove in
the outboard head. Place the bearing cover (27) on the
head. Lubricate the bearing cover capscrews (28) with a
quality grade of anti-seize compound, and install, torquing
to 11 lbs-ft(15Nm)
8. Turn the pump cylinder / casing over so that it rests on the
just installed outboard head and bearing cover.
9. Remove the four vanes (14) and two push rods (77) from
the rotor assembly. Inspect for wear and damage, and
replace as follows:
a. The push rods MUST be installed before installing the
rotor and shaft (13) into the pump cylinder / casing. To
do so, hold the rotor and shaft vertical, with the non-
driven (shorter end) down. Slide the push rods into the
push rod holes of the rotor, then insert the rotor and
shaft into the open end of the pump cylinder / casing.
b. Insert new vanes into the rotor slots with the rounded
edges outward, and the vane relief grooves facing
TOWARDS the direction of rotation. Refer back to
Figure 4 If necessary, move the push rods with a
small screwdriver to install the vanes.
10. Install the inboard disc (71), head seal ring / O-ring (72),
and sleeve (24) bearing as instructed in steps 2 – 4.
11. Install the inboard head and bearing assembly (20) on the
pump cylinder / casing with the V-notch down, towards the
bottom of the cylinder / casing. Use the head dowel pins for
proper alignment.
12. Lubricate the four inboard head capscrews (21) with a
quality grade of anti-seize compound, and install, torquing
to 15 lbs ft (20.3Nm).
