Repair Instructions - Pentair HYPRO HM1C Product Bulletin

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.]
Figure 6

Repair Instructions

Figure 7
Outlet Port
Stainless Steel
Wear Ring
Inlet Port
Drain/Vent
Plug
Pump
Casing
Figure 5
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.]
-8-
Shaft
Mechanical
Main
Seal
Seal
Bearings
Ball
Bearing
Gerotor
Housing
Motor
Body
Shaft
O-ring
Seal
Mounting
Flange
Gerotor
Tank Port
Adapter
Pressure Port
Adapter
O-ring
Seal
Motor End
Plate