Simsite_Installation_Procedure.pdf

Effective November 1, 2000

INSTALLATION PROCEDURES

FOR SIMSITE® PRODUCTS

INTRODUCTION:

These instructions provide the user with the basic installation procedures for Simsite® products, supplementing existing metallic pump technical manuals and/or Technical Repair Standards. If a conflict develops between the existing procedures and this instruction, this instruction takes precedence. These instructions, along with basic knowledge of pump assembly and maintenance practices, will assure the optimum efficiency and life of the Simsite® part. The installation philosophy for pumps containing Simsite® Composite Components differs slightly from that of pumps with metal internals. Although Simsite® Structural Composites have a high strength to weight ratio and are superior to metallics and other composites in performance, reliability, longevity and corrosion resistance, they are softer and lighter than metals and must therefore be handled and installed with care to avoid unnecessary damage. When installing Simsite® Composites, never strike the composite component with a hard tool or object.

Use only a soft wood, plastic or rubber hammer if you need to tap them into place.

Never use a puller on Simsite® Impellers (It is not necessary) or put a direct flame on the Composite. If this installation procedure, along with the specific equipment technical manuals and/or Technical Repair Standards are not followed, all warranties and guaranties are made null and void.

SIMSITE® CASING RINGS:

Simsite® Casing Rings are designed to run with Simsite® Impellers. The composite wear ring to composite casing ring surface assures maximum efficiency, performance, longevity, and reduces the possibility of seizing, galling, and catastrophic pump failure.

If a Metallic Ring is used with a Simsite® Impeller or a Simsite® Wear Ring, the

Simsite® Ring clearance and procedures must still be maintained. (See Table 2) The rings will last longer, perform better, and wear better if Simsite® Casing Rings are used in conjunction with Simsite® Impellers.

INSTALLATION OF SIMSITE® CASING RINGS INTO PUMP CASINGS WHEN A

PRESS FIT IS REQUIRED: (End Suction or Overhung Type Pumps)

Prior to the installation of Simsite® Rings, the ring areas in the pump casing should be cleaned and all burrs removed. The casing bore should be indicated to make sure that it is true (concentric). If the casing bore is not running true, it must be machined before the Simsite® Casing Ring can be installed.

When you press a Simsite® Casing Ring into a pump casing, you must add an interference fit to the outer diameter of the ring as you would with a stainless steel or bronze ring. Sims recommends an interference fit of .001 inch per diametrical inch with a minimum of. 003 inches and a maximum of .010 inches for diameters up to 12.00 inches. (To set the interference fit for those rings with a diameter above 12.00 inches, please consult the factory.) For example, an 8.000 inch diameter casing ring would be machined to 8.008 inches for an interference fit of .008 inches into the casing. See Table 1 for the interference fits of Simsite® components.

Simsite® rings can be chilled or frozen to facilitate pressing the ring into the pump casing. Pressed Simsite® Casing Rings must be secured with a two part epoxy system (Sims epoxy Glue, Devcon Putty “A”, Fixmaster or equivalent) and with 3 -4 set screws.

INSTALLATION OF SET SCREWS WITH A SIMSITE® CASING RING

When installing set screws into a metal casing to secure the Simsite® Casing Ring, the holes for the set screw should be drilled so that 75% - 80% of the screw will be in the casing and only 20% - 25% will be in the Simsite® Composite Ring. The size of the set screws being installed should be the same size as the original set screws or the same size that would be used if a metallic casing ring were being installed. The Simsite Ring must have a minimum wall thickness of .125 inches at the point of installation of the set screw. Care must be taken to ensure that the drill or tap does not "walk" towards the softer composite material when drilling and tapping for the set screws. If necessary, make a fixture to prevent this problem. When tapping the holes for the set screws, standard tapping procedures should be followed.

WARNING

Do not force the tap.

When set screws are used, the casing ring inner diameter should be checked for possible distortion after the set screws are installed. If the distortion is greater than .002 inches , then a final machining cut or sanding will be required to maintain the necessary operating clearance. (See Table 2).

After the set screws are installed, the Simsite® Casing Ring inside diameter must be checked for possible distortion. If the distortion is greater than .002 inches, then a final machining cut or sanding will be required to maintain the proper operating clearance.

INSTALLATION OF SIMSITE® CASING RINGS INTO PUMP CASING WHEN A

PRESS FIT IS NOT REQUIRED: (Split Case or Between Bearins type Pump)

Prior to the installation of Simsite® Rings, the ring areas in the pump casing should be cleaned and all burrs removed. The casing bores should be indicated and leveled to make sure that it is true (concentric) and properly aligned. If the casing bore is not running true, or if it is not level with the other casing bores, it must be machined before the Simsite® Casing Ring can be installed.

When installing Simsite® Casing Rings that are not press fit into their pump housings, it is important that there is enough clearance at the outer diameter to assure that the casing rings are not pinched upon bolt-down of the pump casing. It is recommended that a .002 to .005 inch clearance is maintained between the Simsite® Casing Ring outer diameter and the pump casing.

To determine if the casing ring is pinched, the ring must be blued (or chalked), installed in the pump, and then removed for inspection. Upon inspection of the casing ring, pinching marks should not be evident on the blued or chalked surfaces of the casing ring. If pinching does occur, the Simsite® Casing Ring can be sanded slightly to eliminate the pinching. If pinching persists, then the casing ring may require machining.

However, machining of the Simsite® Casing Ring is not recommended if the metallic pump casing is distorted, or if there is damage to the metallic pump casing ring landing surfaces within the casing. The pump casing must be repaired or machined instead.

The ring areas in the pump casing should be cleaned after machining and all burrs removed.

SIMSITE IMPELLER WEAR RINGS:

Installation of Simsite Impeller Wear Rings are not necessary. When a new Simsite impeller is purchased, Simsite wear rings come standard (integral) with the impeller.

Integral Simsite wear rings assure maximum efficiency, strength, and longevity. A common misconception is that the impeller needs separate wear rings. Since the Simsite rings do not seize and gall like metallic rings, the impeller wear ring surface should be trued-up in a late when necessary and new undersize Simsite Casing Rings should be purchased.

Do not press Metallic wear rings on to a Simsite® Impeller. Metallic rings have a different rate of thermal expansion and could loosen with use. Additionally, Metallic rings will not last as long as Simsite® Rings.

INSTALLATION OF SIMSITE® WEAR RINGS ON TO A METALLIC IMPELLER:

Prior to the installation of Simsite® Impeller Wear Rings on an impeller, the impeller wear ring surfaces should be machined to insure concentricity. To facilitate pressing the new Simsite® Wear Rings on the impeller, they can be heated in an oven up to 250o degrees F. All Simsite® Wear Rings should be secured on the impeller using Simsepoxy glue. It is recommended that 3 set screws are installed for additional security. (See installation of set screws with a Simsite® Casing Rings.) If set screws are used, the wear ring must be pressed onto the impeller oversized. A final machining cut is required to maintain concentricity and the necessary operating clearance. (See Table 2)

ALLOWABLE T.I.R. OF SIMSITE® WEAR RINGS:

If Simsite Wear Rings are used with Simsite Casing Rings, the allowable total indicated runout (T.I.R.) of the wear rings should be less than or equal to .005 inches. If Simsite rings are used with metallic rings (Sims does not recommend the use of metallic rings with Simsite composite rings because they do not wear as well as Simsite

Rings, they are not as efficient, they are not as forgiving, and they will seize if not installed properly.) the total indicated runout (T. I. R.) should be less than or equal to .002 inches.

INSTALLATION OF SIMSITE® IMPELLERS:

Prior to the installation of a Simsite® Impeller into a pump, it is necessary to confirm that the shaft is true (i.e. shaft run-out less than .002”), and that the integrity of the shaft diameter at the impeller bore is good. The key way must be checked to assure that it is clean and that there is a clearance on all sides of key including on top. There should be approximately a .010” clearance on top of the key when it is installed into the shaft and impeller. The impeller should not be pressed on to the shaft when a keyed shaft installation is employed. The bore of a Simsite® Impeller is manufactured with an additional .002 inch (dry) than the shaft diameter. The Simsite® Impeller will swell slightly in water, allowing the fit of the impeller to have an approximate clearance of

.0005 to .001 inch, which is necessary for a keyed shaft arrangement. The Simsite® impeller should never be pressed or forced onto the shaft. A soft mallet, however, can be used to gently position the impeller onto the shaft.

Never force a Simsite® Impeller onto the shaft

The impeller key should be either stainless steel or monel or titanium in salt water service. The key should be in good condition and fit the entire length of the bore of the Simsite Impeller.

Like a metallic impeller, the Simsite® Impeller should be positioned in the center of the casing volute.

NOTE: The alignment of the coupling and the shaft must be checked cold and warm after assembly. Proper alignment is critical to pump operation and longevity.

NOTE: For ship board installation, all major piping must be loosened to make sure there is no pipe strain. If the piping moves after the bolts are removed, the piping must be repositioned to eliminate pipe strain which will fail a pump if not corrected.

After installing a new Simsite® Impeller, it is important not to leave the pump flooded without running the pump for at least 72 hours. During this 72 hour period, the rings will expand to the specified operating dimensions.

If for some reason, the pump is left flooded but not running for an extended period of time (more than 3 days), the pump must be rotated at least twice a day until it is started.

INSTALLATION OF SIMSITE® IMPELLERS WITH TAPERED BORES:

For the design of impellers with a tapered bore, the standard taper must be specified along with the length of the bore and the end diameters. The integrity of the tapered shaft at the taper must be excellent, otherwise the shaft must be replaced. If a collet is used, it should be replaced each time a new Simsite® Impeller is installed. If the Simsite® Impeller has a stainless steel hub insert, then the impeller nut can be installed on the shaft with the torque limit of 80 ft-lbs. However, if the impeller is of all Simsite® construction, then the impeller nut should be installed with a minimum of torque that would be necessary to fit the impeller snug onto the tapered shaft. This limit is set at 20 ft-lbs. Excessive torquing of the impeller nut must be avoided. Experience and “feel” are important considerations. It is also worth noting that when immersed in water the Simsite Impeller will swell, further pre-loading the impeller nut.

Do not exceed 20 ft-lb for tapers without a metal insert.

After installing a new Simsite® Impeller, it is important not to leave the pump

INSTALLATION OF SIMSITE® IMPELLERS WITH THREADED BORES:

The threaded end of the shaft where the impeller fits onto the shaft should be checked to make sure that it is free of any burrs. The integrity of the threaded shaft must be in good condition, otherwise the shaft must be replaced. The Simsite® Impeller should be screwed onto the shaft and hand tightened only. Do not use a hammer, mallet or any other devise to tighten the impeller.

REMOVAL OF SIMSITE® IMPELLERS :

Simsite® Impellers should never be forced off the shaft. Because of the slight swelling of the Simsite® Impeller bore, the impeller may “stick” on the shaft if the impeller is wet. Let the Simsite® Impeller dry or use a heater or dryer (low heat) and the impeller will slide off the shaft. If necessary use a soft mallet and gently tap the impeller off the shaft.

Never use a hydraulic press or any pullers on a Simsite® Impeller.

Never use high heat or a torch on ANY Simsite® parts.

REMOVAL OF SIMSITE® IMPELLERS IF THE RING CLEARANCES HAVE CLOSED:

When Simsite® Rings are new, they may swell and may “stick” if immersed in a fluid without the pump operating for a long period of time. Even if the pump is drained after a “test operation,” there may be enough fluid in the bottom of the casing to “seize” the pump. If this should happen, the pump should be completely drained (dry) and a heater or dryer (low heat) should be placed near the impeller and rings. When the impeller and rings have dried, the clearances will open back up to the original size. Never exceed

250 degrees F.

Do not use an open flame or exceed 250 degrees F.

DETERMINATION OF CLEARANCES BETWEEN WEARING SURFACES:

The diametrical clearances between Simsite® Casing Rings and Simsite® Wear Rings are provided on Table 2. It should be noted that these clearances are determined for dry Simsite® Casing Rings and Impellers. If the Simsite® Casing Rings are used in conjunction with a metal impellers, or if Simsite® Impellers are used with metal rings

(Sims does not recommend the use of metallic rings with Simsite® Impellers because they do not wear as well as Simsite Rings, they are not as efficient, they are not as forgiving, and they will seize if not installed properly.) these clearances should be reduced by 25% (The clearance should be 75% of the standard Simsite to

Simsite clearance). If a Simsite Casing Ring requires a press fit into a pump casing, the amount of interference fit is added to the dry factory set clearance.

If the Simsite Rings have been in service or immersed in a fluid, they must be allowed to dry for a 24 hour period prior to measurement because of the slight swelling and thermal expansion of the composite.

MACHINING SIMSITE® IMPELLER DIAMETERS:

Simsite® impeller diameters are set at the Sims Factory. If it is necessary to turn down the impeller diameter, it is strongly recommended that the customer return the impeller to Sims for proper modification.

If it is absolutely necessary to trim the impeller diameter, then the Simsite®

Impeller should be assembled on the original pump shaft or on a “working mandrill” and machined in the direction of rotation of the impeller.

If the impeller is machined in the incorrect (opposite) direction, stress cracks might be induced and the impeller could possibly fail in service.

Simsite® impeller should never be “chucked” into a lathe for machining. Stress cracks most probably will be induced by the pressure of the jaws and the impeller might fail in service.

SIMSITE® IMPELLER BALANCE:

New Simsite Impellers should not be balanced because they are balanced by design.

Simsite Impellers are precision machined on a 5-axis machining centers and therefore are naturally balanced (there are no casting imperfections, defects, or cooling distortions). Unlike cast impellers, the center of axis or rotation is in the center of the Simsite® Impeller. Since Simsite Impellers will not corrode in salt or brackish water, like metallic impellers, they will not go into an "unbalanced situation" and therefore do not need to be balanced. The Simsite Impellers are also approximately

1/6 the weight of a metallic impeller which reduces shaft deflection (in both the dynamic and static conditions), vibration, bearing loading, ring and sleeve wear.

INSTALLATION OF SIMSITE® SLEEVE BEARINGS:

When Simsite® Guide Bearings are PRESS FIT into the pump casing or bearing housings:

Prior to the installation of Simsite® Sleeve/Guide Bearings, the bearing areas in the pump casing or bearing housing should be cleaned and all burrs removed. The bores should be indicated to make sure that they are true (concentric). If the bearing housing bore is not running true, it must be machined before the Simsite® Guide Bearing can be installed.

When Simsite® Guide Bearings are press fit into the bearing housings, they are pressed in using interference fits similar to Simsite® Casing Wear Rings. It is necessary to assure these bearing housings are true and free of any burrs prior to the installation of Simsite® Bearings. The interference is recommended to be .001 inches per diametrical inch, with a minimum of .003 inches and a maximum of .010 inches.

The Simsite® Bearings can be chilled or frozen to facilitate pressing the bearings into the pump casing or bearing housings. A soft mallet can be used to gently press the bearings into the housing. Simsite® Bearings should be secured in the housings with Simsepoxy glue and 2 to 4 set screws.

The clearance between the Simsite® Guide Bearing bore and the shaft or sleeve diameter should follow the guidelines of Table 3 and should never be less than .010 inches.

Installation of Simsite® Bearings

When Simsite® bearings are Press Fit (Stuffing Box, Guide or Sleeve Bearing, and Spider) into the housings, the following should be done:

1.) Chill or Freeze bearings to facilitate pressing the bearings into the housing.

2.) Use a soft mallet to gently press the bearings into the housing.

3.) Housing bores should be true (concentric)

4.) Housing bores should be cleaned and free of any burs.

5.) Simsite® Bearings should be secured with glue and set screws (Make sure that the set screws do not distort the bore of the bearing -- See Simsite® Installation Guide)

6.) Start and run the Pump for at least 72 hours immediately after installation.

NOTE: After installing new Simsite® Bearings, it is important not to leave the pump flooded without running the pump for at least 72 hours. During this 72 hour period, the bearings will expand to the specified operating dimensions.

When Simsite® Guide Bearings are NOT PRESS FIT into the pump casing or bearing housings:

Prior to the installation of Simsite® Guide Bearings, the bearing areas in the pump casing or bearing housing should be cleaned and all burrs removed. The bores should be indicated to make sure that they are true (concentric). If the bearing housing bore is not running true, it must be machined before the Simsite® Guide Bearing can be installed.

When Simsite® Guide Bearings are not press fit into the pump casing or bearing housings, they are designed with an anti-rotation ring or one or more anti-rotation pins.

It is important that there is enough clearance at the outer diameter of the bearing to assure that the bearings are not pinched upon bolt-down of the pump casing or bearing housing cover. It is recommended that a .002 to .005 inch clearance is maintained between the Simsite® Bearing outer diameter and the pump casing.

To determine if the Simsite® Bearing is pinched, the bearing must be blued (or chalked), installed in the pump, and then removed for inspection. Upon inspection of the Simsite® Bearing, pinching marks should not be evident on the blued or chalked surfaces of the bearing. If pinching does occur, the Simsite® Bearing can be sanded slightly to eliminate the pinching. If pinching persists, then the Simsite® Bearing may require machining.

Machining of the Simsite® Bearing is not recommended if the metallic pump casing is distorted, or if there is damage to the bearing housing surfaces within the casing. The pump casing must be repaired or machined instead. The bearing areas in the pump casing should be cleaned after machining and all burrs removed.

The clearance between the Simsite® Guide Bearing bore and the shaft or sleeve diameter should follow the guidelines of Table 3 and should never be less than .010 inches.

When Simsite® Bearings are Not Press Fit (Diffuser) into the housings, the following should be done:

1.) Housing bores should be true (concentric).

2.) Housing bores should be cleaned and free of any burs.

3.) Verify that the bearing is not pinched (i.e. blue or chalk, install, and ten inspect).

4.) Start and run the Pump for at least 72 hours immediately after installation.

INSTALLATION OF SIMSITE® SLEEVES:

Simsite® sleeves are mounted on shafts with a clearance of between .001 and .002 inches. This clearance prevents the sleeve from twisting and buckling, yet allows easy mounting. A locking device such as a key and/or set screws is used to prevent the sleeve from rotating.

NOTE: Simsite sleeves used in conjunction with mechanical seals for sealing applications should be manufactured from either Simsite® Grade 300 or 302.

NOTE: Simsite sleeves used in conjunction with packing for sealing applications should be manufactured from either Simsite® Grade 350 or 375. A graphite based packing should be used with Simsite Sleeves.

NOTE: Never soak sleeves in oil or water prior to installation on the shaft -- if a lubricant is necessary use SIMS PERMALUBE® anti-seize only.

ASSEMBLY AND TEST CONSIDERATIONS:

The alignment of the coupling and the shaft must be checked both cold and warm after assembly. Proper alignment is critical to pump operation and longevity. For ship board installation, all major piping must be loosened to make sure there is no pipe strain, which can cause a pump to fail if not corrected.

After the rotating element with Simsite® components is fit into the pump casing and the casing cover has been secured, the rotating element must turn by hand before the pump motor can be started. If for some reason the shaft does not turn by hand, then the pump must be disassembled to determine the problem. Under no circumstance should the pump be started if the rotating element will not turn by hand. In order to maximize the extended pump life that Simsite® components offer, SIMS recommends replacing all rolling element bearings while rebuilding the rotating assembly.

THE PUMP MUST TURN FREELY BY HAND AFTER ASSEMBLY. IF FOR SOME

REASON THE PUMP DOES NOT TURN FREELY, DO NOT START THE PUMP.

TAKE THE PUMP APART AND FIND OUT WHY!

TEST PROCEDURES:

When performing operational testing, it is recommended that the casing be allowed to stand full of water or the test fluid for at least 48 hours prior to starting the test to allow the Simsite® Composite Material to expand. This will allow the required wet clearances to be achieved for the operational test to be accurate.

BALANCING THE ROTATING ASSEMBLY:

Simsite® Impellers and pump components are precision machined to assure dynamic balance, hydraulic balance and optimal performance. The dynamic balancing of Simsite® products by weight adjustment (i.e. adding balancing weights such as set screws) is usually not necessary and may be harmful to the integrity of the components if done improperly.

DYNAMIC BALANCE BY GRINDING OFF MATERIAL MUST NEVER BE DONE ON

SIMSITE® COMPONENTS

Although there is no need to balance Simsite® Impellers, if you wish to check the balance or if it is required, you must check the impellers independently from the complete rotating element. The standards by which Simsite® Impellers are balanced differs from metallic impellers because of the light weight of the composite. Therefore, there shall be no weight adjustment made to a Simsite Impeller of 2 grams or less.

If an adjustment needs to be made DO NOT GRIND ON THE SIMSITE® IMPELLER.

Make an adjustment for balance on one of the metallic parts or add weight to the Simsite Impeller (Similar to balancing an automobile tire) by drilling and tapping set screws into the impeller (see Balancing Instructions) and covering them over completely with Simsite molecular compound.

BALANCING INSTRUCTIONS -- SIMSITE ® IMPELLERS:

Simsite® impellers and pump components are very light weight and are precision machined to assure dynamic balance, hydraulic balance, and optimal performance.

The dynamic balancing of Sims Impellers and composite products by weight adjustment

(grinding off material is not allowed and may be harmful to the integrity of the composite.) is not necessary, but if it is necessary may only be performed by drilling and tapping set screws into the impeller (see Balancing Instructions ) and covering them over completely with Simsite® molecular compound.

Although there is no need to balance Simsite® Impellers, if you wish to check the balance or if it is required, you must check the impellers independently from the complete rotating element. The standards by which Simsite® Impellers are balanced differs from metallic impellers because of the light weight of the composite. Therefore, there shall be no weight adjustment made to a Simsite Impeller of 2 grams or less.

BALANCE PROCEDURE FOR SIMSITE® IMPELLERS:

Assuming that the driver and shaft is initially balanced, little or no impact should occur upon the addition of a Simsite® Composite Impeller. It should not be necessary to rebalance the Simsite® Composite Impellers. Simsite® Impellers are precision machined and dynamically balanced at the Sims Factory. If imbalance is evident during operation, attempt to locate the source of imbalance and make the necessary adjustments to the metallic components of the rotating assembly.

Dynamic balancing of rotating assemblies utilizing Simsite® composite components requires special consideration and procedures. Because of the Simsite® composite component's light weight relative to metallic components, and because of the matrix construction of the Simsite® material, grinding is not permitted and may be harmful to the integrity of the composite component. All weight adjustments should be made by grinding on the metallic components of the rotating element.

note: Where dynamic balancing is required, the necessary weight adjustments shall only be made to the metallic components of the rotating assembly.

DRILLING & TAPPING

FOR SET SCREWS IN SIMSITE® COMPOSITE IMPELLERS:

If necessary, Simsite® Impellers can be balanced by adding weight to the impeller.

(Similar to the balancing of an automobile tire except that the weight should be countersunk into the impeller). The recommended weight that has to be added to the impeller for balance should be either a monel or stainless steel set screw (8-32, 10-32, or 1/4-20). The impeller should be drilled and tapped to accept the set screws either in the side of the "wear ring area" or in the "shroud of the impeller in the middle of one or more of the vanes." The set screws should be screwed in with loctite® (or equal) and covered with a molecular compound (Belzona, Devcon, Simsite®, etc.) to cover the screw.

1.) Secure impeller with clamps, studs, nuts, etc. (Do not put excessive stress on the composite impeller.)

2.) Secure center drill in chuck. Drill impeller. (Do not move impeller between operations.)

3.) Secure drill in chuck and drill to the proper depth. (Drill deep enough to slightly countersink the set screw you are adding for balance.) Clean chips from hole.

4.) Secure tap in chuck of a tapping machine or tap by hand rotating the tap slowly. (Do not use excessive force when tapping.) Tap hole clearing the chips periodically from the hole.

5.) Secure bottom tap in the chuck. Follow the same procedure as number 4.

6.) Screw in the stainless steel or monel set screws with glue or loctite®. (Do not over tighten.)

7.) If the set screws need to be cut, then cut and grind the edges of the screws before screwing them into the composite.

8.) The set screws must be countersunk into the composite and covered with

Sims Molecular Compound.

TABLE 1

INTERFERENCE FITS FOR

OVERHUNG PUMP CASE RINGS

AND BEARINGS

Diameter of

Press Fit

Component

(inches)

Recommended

Diametrical

Interference

(inches)

1 Inch .003 Inch

2 .003

3 .003

4 .004

5 .005

6 .006

7 .007

8 .008

9 .009

10 .010

11 .010

12 .010

13 to 16 .014

17 to 24 .016

Above 24 Call Fctory

TABLE 2

FACTORY SET CLEARANCES AND STANDARDS FOR

SIMSITE® CASING WEAR RING TO SIMSITE IMPELLER WEAR RING

DRY CLEARANCE

O.D. Impeller

Wear Ring

(inches)

Diametrical Clearance

(Dry)

And Tolerance

Recommended

Maximum Clearance

(Dry)

Before Replacement

(inches)

2 .024 +/- .004 .030

3 .026 +/- .004 .034

4 .028 +/- .004 .036

5 .030 +/- .005 .038

6 .032 +/- .005 .040

7 .034 +/- .005 .044

8 .036 +/- .005 .046

9 .037 +/- .005 .048

10 .038 +/- .005 .049

11 .039 +/- .006 .050

12 .040 +/- .006 .052

13 .041 +/- .006 .053

14 .042 +/- .006 .054

15 .042 +/- .006 .054

Notes:

1.) If a Simsite® Ring is used in conjunction with a Metallic Wear Ring (WHICH IS NOT RECOMMENDED), then the DIAMETRICAL CLEARANCE is reduced to 75% of the value from the above chart. (ex. a 12.000 inch dia. ring would require a diametrical clearance of .030 inches.)

2.) All installation clearances are based on the components being dry. When reusing a Simsite® Wear Ring, allow the ring to dry for 24 hours before taking dry clearance measurements.

3.) When machining Simsite® Rings, the minimum wall thickness is .187 inches.

4.) When installing set screws to secure Simsite® Rings, the Casing Ring inner diameter should be checked for possible distortion after the set screws are installed. If the distortion is greater than .002 in. then a final machining cut must be taken to maintain the necessary operating clearance.

5) The recommended maximum clearance before replacement should be used as a guide. Pump performance should be the final element in determining whether the parts are replaced.

TABLE 3

SIMSITE® GUIDE BEARING CLEARANCES WHEN

RUNNING SIMSITE A SIMSITE SHAFT OR SLEEVE ON SIMSITE BEARINGS

Shaft or Sleeve Diameter

Recommended Dry

Diametrical Clearance and Tolerance

(inches)

1 .010 +/- .002

2 .014 +/- .002

3 .016 +/- .002

4 .018 +/- .002

5 .020 +/- .002

6 .022 +/- .003

7 .024 +/- .003

8 .026 +/- .003

9 .028 +/- .003

10 .030 +/- .003

Above 10 Inches Consult Factory

1.) All installation clearances are based on the components being dry. When reusing a bearing, allow it to dry for 24 hours before taking dry clearance measurements.

CONTACTING THE FACTORY FOR ASSISTANCE

If help is needed from the Sims Pump Valve Company, Inc. Factory for the installation or disassembly of a Simsite® product, you can contact the factory at

(201)-792-0600 or (212)-227-7661 or (800)-SIMS-303 or fax us at (201)-792-4803.

Correspondence may be addressed to:

Sims Pump Valve Company, Inc.

1314 Park Avenue

Hoboken, New Jersey

07030 e-Mail: SimsPump@AOL.com

Web Site: www.SIMSITE.com

TABLE OF CONTENTS

Introduction 2

Simsite® Casing Rings 2 Installation of Simsite® Casing Rings into End Suction Pumps 3 Installation of Set Screws with Simsite® Casing Rings 3 Installation of Simsite® Casing Rings into Split Case Pumps 4 Simsite® Impeller Wear Rings 4 Installation of Simsite® Wear Rings on Metallic Impellers 5 Allowable T.I.R. of Simsite® Wear Rings 5

Installation of Simsite® Impellers 5 Installation of Simsite® Impellers with Tapered Bores 6 Installation of Simsite® Impellers with Threaded Bores 7 Removal of Simsite® Impellers 7 Removal of Simsite® Impellers if the Ring Clearances have Closed 7 Determination of Clearances Between Wearing Surfaces 8 Machining Simsite® Impeller Diameters 9 Simsite® Impeller Balance 9

Installation of Simsite® Sleeve Bearings 9 Installation of Simsite® Bearings 10 Installation of Simsite® Sleeve Bearings that are Not Press Fit 10

Installation of Simsite® Sleeves 11

Assembly and Test Considerations 12 Test Procedures 12 Balancing the Rotating Assembly 12 Balancing Instructions 13 Balancing Procedure for Simsite® Impellers 13

Contacting the Factory for Assistance 18

LIST OF TABLES

Table 1 Interference Fits 15 2 Factory Set Ring Clearances and Standards 16 3 Factory Set Bearing Clearances and Standards 17