-7-
Repair Instructions
Figure 5
Outlet Port
Inlet Port
Mechanical
Seal
Ball
Bearing
Shaft
Seal
Main
Bearings
Gerotor
Tank Port
Adapter
Pressure Port
Adapter
O-ring
Seal
Motor End
Plate
Gerotor
Housing
Motor
Body
Shaft
O-ring
Seal
Mounting
Flange
Pump
Casing
Drain/Vent
Plug
Stainless Steel
Wear Ring
Figure 6
Figure 7
Hypro Repair Tools:
Tool Box No. 3010-0168 • 1/4" Allen Wrench No. 3020-0008
Support Bars (2) No. 3010-0064 • Port Brush No. 3010-0066
1/16" Allen Wrench No. 3020-0009 • Brush Holder No. 3010-0067
• Large Retaining Ring Pliers No. 3010-0084 • Small Retaining Ring
Pliers No. 3010-0167
Shop Tools Needed
Bench Vice • Arbor Press • Air or Hand Drill • Small Knife
Metal Pipe — 1" dia. x 4" high (Bearing Seating Tool)
PVC Pipe — 3/4" dia. x 4" - 6" high (Seal Seating Tool)
12" Crescent Wrench • Two Flat Screwdrivers (approx. 10" Long)
1/2'', 9/16", 5/8" and 7/8" sockets • Hammer or Rubber Mallet
Small Screwdriver (recommended) • Large File (optional)
1/2" and 9/16" Box End Wrench • Lubricating Spray (WD-40 or LPS)
Small amount Hydraulic Oil • Cleaning Solvent Tank (recommended)
Pump Housing Disassembly
Instructions in italics describe procedures for the Series
9300P Polypropylene Centrifugal Pumps, when different
than the cast iron pumps.
1.
Using a 9/16" box end wrench, remove the four Hex Head
Bolts holding the Pump Casing to the Mounting Flange. (If
necessary, tap Pump Casing Outlet Port with rubber
mallet or hammer to separate.) [
Using a 1/2" wrench,
remove the six bolts from the front. For the two bottom
bolts securing the Base, you will need to hold the two nuts
with another 1/2" wrench. Also remove the 5/16" screw
from the rear near the outlet port.]
2.
To remove the Impeller Nut, insert a large screwdriver or
file (at least 10" [254 mm] long) into Impeller Vanes to
prevent Impeller from turning when loosening nut. Use a
5/8" socket wrench to remove the Impeller Nut by turning
it counterclockwise (See Figure 6). [
Use 7/8" deep socket
wrench to remove Plastic Seal Nut, then 9/16" deep socket
to remove Metal Jam Nut and Washer.]
3.
Once nut [
and washer] is removed, place a screwdriver
on each side behind the Impeller and pry away from the
Mounting Flange (See Figure 7). Remove Woodruff Key
from the Shaft. Remove O-ring from the Mounting Flange.
Pump Seal Removal
1.
Lightly lubricate the Shaft for easier removal of the Seal.
Using two screwdrivers positioned opposite each other,
pry the rotary portion of the Seal from the Shaft (See
Figure 8).
Figure 8
In the case of a severe Pump Seal leak, inspect the
Shaft/Bearing Assembly in the Hydraulic Motor for possible
contamination.
2.
Using a 1/2'' box end wrench, remove the four bolts
holding the Motor to the Mounting Flange. Remove
Motor. [
Remove the Plastic Back Cover flange. Knock
the Seal out from back with a hammer and screwdriver.
Use a 1/2'' socket wrench and 1/2'' box end wrench to
remove the Mounting Flange from the Hydraulic Motor.]
