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MAINTENANCE:
PUMP ASSEMBLY
Before reassembling the pump, inspect all component
parts for wear or damage, and replace as required. Wash
out the bearing/seal recess of the head and remove any
burrs or nicks from the rotor and shaft.
Reassemble the BEARING Components first:
To aid in the installation of the sleeve bearing (24) the
creation and use of a tool similar to the one shown in Figure 8
may be useful.
Figure 8 – Sleeve Bearing Installation
Pump Model
Bearing Bore
Dia. “C”
Tool
Dim “A”
Tool
Dim “B”
PVS10, 15
1.89 IN.
(48.2 mm)
2.76 IN.
(70 mm)
1.76 IN.
(44.75 mm)
PVS20, 30,
40, 50
2.68 IN.
(68 mm)
3.35 IN.
(85 mm)
2.55 IN.
(64.75 mm)
1.
Inspect the sleeve bearing (24) for wear or damage and
replace as required. To replace sleeve bearing:
PVS10,15
a. Using an appropriately sized arbor press, remove
the old bearing (24) from the bearing housing (57).
b. To aid installation and prevent bearing damage.
Coat the bearing (24) with grease and place it on the
face of the bearing housing (57).
c.
Using an arbor press, press the bearing (24) into the
housing (57) until it is
flush
with the face of the
bearing housing.
PVS20-50
a. To remove old bearing, pry bearing away from
housing at seam using appropriate small chisel or
similar prying tool. Use mallet and chisel to separate
seam inward and apart until bearing separates and
becomes loose. Although some damage may occur
to bearing housing ID, take care to minimize
damage. If damage does occur, lightly sand
damaged surface until all raised edges of damage
are removed.
b. To aid installation and prevent bearing damage, coat
the bearing (24) with grease and place it on the face
of the bearing housing (57).
c.
Using an arbor press, press the bearing (24) into the
housing (57) until it is
flush
with the face of the
bearing housing
NOTE: Ensure the bearing does not become misaligned
during the pressing motion.
2. Inspect the ball bearing (24C) for wear or damage and
replace as required. To replace ball bearing:
a. Using an appropriately sized arbor press, remove
the old bearing (24C) from the bearing adjuster
(188). Discard the old bearing after removal.
b. To aid installation and prevent bearing damage, coat
the bearing with grease and place it on the face of
the bearing adjuster (188)
c.
Using an arbor press, press outer race of the
bearing into the bearing adjuster until it is seated in
the bearing adjuster.
3. Screw the bearing adjuster (188) to the bearing housing
(57) until they are flush. Be sure that the setscrew (189)
is not interfering with the flush fit of the bearing adjuster
to the bearing housing.
4. Seal stationary assembly
Refer to the seal manufacturer’s instructions for detailed
removal and replacement instructions.
Mechanical seal type 51, 9
Installing the Stationary Seat
a. Apply a small amount of lubricant in the seal access of
the seal cover (126).
b. Install a new stationary seal-ring and stationary seat.
Clean the polished face with a clean tissue and
alcohol.
Cartridge seal
: Follow manufacturer’s instructions
5. Install a new O-ring (51) into the seal cover (126A).
6. Lubricate the O-ring seal area on the bearing housing
(57) with a light coating of oil. Insert the seal cover (126)
into the bearing housing.
7. Secure the seal cover to the inboard head (20) by
installing the cap-screws (21A) Torque per table 1.
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