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SPECIAL INFORMATION

ROTATION

Viking pumps operate equally well in a clockwise or counter-

clockwise rotation. Shaft rotation determines which port

is suction and which is discharge. Suction port is where

pumping elements (gear teeth) come out of mesh.
If pump rotation is reversed during operation, pressure

protection must be provided on both sides of pump.
Relief valve adjusting screw cap must always point towards

suction side of pump. If pump rotation is reversed, remove

pressure relief valve and turn end for end.

AS, AK, AL:

Pumps have a pipe plug in the suction side of

head for internal pin lubrication. If the rotation is reversed,

the head should be removed and the pipe plug placed on the

suction side of the head.

PRESSURE RELIEF VALVES

Viking pumps are positive displacement pumps and must

be provided with some sort of pressure protection. This

may be a relief valve mounted directly on the pump, an

inline pressure relief valve, a torque limiting device or a

rupture disk.

There are relief valve options available on those pump

models designed to accept a relief valve. Options may

include an internal relief valve or return to tank relief valve.

If pump rotation is reversed during operation, pressure

protection must be provided on

both

sides of pump.

Relief valve adjusting screw cap must

always

point towards

suction side of pump. See

“Figure 3” on page 10

If pump rotation is reversed, remove pressure relief valve

and turn end for end.

Pressure relief valves cannot be used to control pump flow

or regulate discharge pressure.

For additional information on pressure relief valves, refer to

Appendix

General Installation Notes

item 5 on Pressure

Protection or contact your Viking Pump

representative for

Engineering Service Bulletin ESB-31.

MAINTENANCE

These pumps are designed for long, trouble-free service life

under a wide variety of application conditions with minimum

maintenance. The points listed below will help provide long

service life.

CLEANING PUMP

Keep pump as clean as possible. This will facilitate inspection,

adjustment and repair work and help prevent overlooking a

dirt-covered grease fitting.

STORAGE

If pump is to be stored, or not used for six months or more,

pump must be drained and a light coat of non-detergent SAE

30 weight oil or food grade equivalent must be applied to all

internal pump parts.

Lubricate the fittings and apply grease to pump shaft

extension. Viking suggests rotating pump shaft by hand one

complete revolution every 30 days to circulate the oil. Tighten

all pump assembly bolts before putting pump in service after

being stored.

SUGGESTED REPAIR TOOLS

The following tools must be available to properly repair these

pumps. These tools are in addition to standard mechanics’ tools

such as open-end wrenches, pliers, screwdrivers, etc. Most of

the items can be obtained from an industrial supply house.

Soft headed hammer

Allen wrenches (set screws & special mechanical seals)

Snap ring pliers
INTERNAL – Viking Part No. 2-810-047-999;

GG, HJ, HL pumps
EXTERNAL – Viking Part No. 2-810-029-375;

GG, HJ, HL pumps

Mechanical seal installation sleeve
2-751-001-730 for 0.75 inch seal; GG pumps
2-751-004-730 for 1.25 inch seal; AS, AK, AL pumps
No sleeve needed for HJ, HL pumps

Bearing locknut spanner wrench – 2-810-043-375-00

Spanner wrench, adjustable pin type for use on bearing

housing end cap – 2-810-008-375-00

Brass or plastic bar

Arbor press

FIGURE 3

Relief Valve

Adjusting

Screw Cap

Suction

Discharge

MECHANICAL SEALS

Extra care should be taken in repair of pumps with

mechanical seals. Be sure to read and follow all special

instructions supplied with your pump.

TSM 1741 | Issue B | Page 3 of 20

Содержание 4197 Series

Страница 1: ... Maintenance 19 ESB 515 19 Lubrication of Viking Pumps 19 Lubrication of Viking Reducers 19 Lubrication of Viking Associative Equipment 19 FIGURE 2 AS AK AL SIZES FIGURE 1 GG HJ HL SIZES INTRODUCTION The illustrations used in this manual are for identification purposes only and cannot be used for ordering parts Obtain a parts list from your Viking Pump representative Always give a complete name of...

Страница 2: ...ump rotation may be reversed during operation pressure protection must be provided on both sides of pump Relief valve adjusting screw caps must always point towards suction side of the pump If pump rotation is reversed position of the relief valve must be changed Pressure relief valves cannot be used to control pump flow or regulate discharge pressure For additional information refer to Appendix G...

Страница 3: ...Bulletin ESB 31 MAINTENANCE These pumps are designed for long trouble free service life under a wide variety of application conditions with minimum maintenance The points listed below will help provide long service life CLEANING PUMP Keep pump as clean as possible This will facilitate inspection adjustment and repair work and help prevent overlooking a dirt covered grease fitting STORAGE If pump i...

Страница 4: ...m Name Of Part Item Name Of Part 1 Locknut 9 Bearing Retainer Washer 17 Idler Bushing 2 Bearing Spacer Collar 10 Casing 18 Idler and Bushing Assembly 3 End Cap for Bearing Housing 11 O Rings for Relief Valve 19 Head O Ring 4 Lip Seal for Bearing Housing 12 Relief Valve 20 Idler Pin 5 Ball Bearing Outer 13 Pipe Plug 21 Head and Idler Pin Assembly 6 Bearing Housing 14 Capscrew for Valve 22 Capscrew ...

Страница 5: ...tscrew Setscrew Endcap Shaft Locknut Outer Ball Bearing Bearing Housing Inner Snap Ring Outer Snap Ring Shaft Snap Ring Inner Ball Bearing Bearing Retainer Washer Setscrew Shaft Locknut DANGER Before opening any Viking pump liquid chamber pumping chamber reservoir relief valve adjusting cap fitting etc be sure 1 That any pressure in the chamber has been completely vented through the suction or dis...

Страница 6: ... them slowly by hand Spinning the bearings will damage the race and balls Make sure the bearings are clean then lubricate with non detergent SAE 30 weight oil and check for roughness Roughness can be determined by turning the outer race by hand Replace the bearings if they have roughness Be sure the shaft is free from nicks burrs and foreign particles that might damage the mechanical seal Scratche...

Страница 7: ...ce can be pressed upon rotor hub See Figure 10 on page 7 or Figure 13 on page 8 To disassemble the rotating portion of the seal compress the carbon face and rapidly depress the retaining ring through the notch at the end of the retainer cartridge as shown in Figure 14 on page 8 Press the retainer cartridge onto the rotor hub See Figure 11 on page 7 At the factory an installation tube is used to pr...

Страница 8: ...ler pin which is offset in the pump head is positioned toward and equal distance between the port connections to allow for proper flow of liquid through the pump 4 Tighten the head capscrews evenly 5 If the pump was equipped with a relief valve and was removed during disassembly install on the head with new gaskets The relief valve adjusting screw cap must always point towards the suction port Ref...

Страница 9: ...aring assembly Turn the thrust bearing assembly clockwise until it can no longer be turned by hand Back off counter clockwise until the rotor shaft can be turned by hand with a noticeable drag 2 Make a mark on the outside diameter of the bearing housing and a corresponding mark on the casing 3 For standard end clearance back off the thrust bearing assembly the required length measured on the outsi...

Страница 10: ... discharge line for actual adjusting operation 3 Turn adjusting screw CW in to increase pressure and CCW out to decrease pressure For guidance dimensions contact your Viking Pump representative for Engineering Standard ES 37 4 Close the discharge line at a point beyond the pressure gauge Limit the amount of time the pump is being operated at this condition The temperature inside the pump will rise...

Страница 11: ...tions including right hand and left hand 4 Suction Discharge shaft rotation will determine which port is suction and which is discharge A look at Figure A3 will show how rotation determines which port is which As the pumping elements gears come out of mesh point A on Figure A3 liquid is drawn into the suction port Then at point B the gears come into mesh and the liquid is forced out the discharge ...

Страница 12: ... reached at which all of the liquid being pumped is going through the valve This pressure is the relief valve setting Viking pumps can be furnished with either an internal pressure relief valve one which directs the flow from the valve back to the suction side of the pump or a return to tank valve which directs the flow through piping back to the supply tank See Figure A5 A and Figure A5 B An inli...

Страница 13: ...sult in personal injury and or damage to the unit FIGURE A9 EXAMPLE OF IMPROPER LIFTING METHOD NOTE NEVER lift the unit with slings connected to the component lifting features The lifting features are designed for the individual component and are not rated to lift the entire unit Improper lifts can result in personal injury and or damage to the unit FIGURE A10 A Check width between these surfaces ...

Страница 14: ...on or discharge line go around the obstacle instead of over it Going over it creates an air pocket See Figure A13 5 Where practical slope the piping so no air or liquid pockets will be formed Air pockets in the suction line make it hard for the pump to prime 6 For a suction line with a long horizontal run keep the horizontal portion below the liquid level if possible This keeps the pipe full of li...

Страница 15: ...s manual 3 Check piping to be sure there is no strain on the pump casing 4 Rotate the pump shaft by hand to be sure it turns freely MAKE SURE THE PUMP DRIVER IS LOCKED OUT OR CANNOT BE ENERGIZED BEFORE DOING THIS 5 Jog motor to be sure it is turning in the right direction refer to discussion on pump rotation under item 4 in General Installation Notes section 6 Check any relief valves to be sure th...

Страница 16: ...ossibly an air leak insufficient liquid above the end of the suction pipe c Vibrating from cavitation misalignment or damaged parts PRESSURE GAUGE DISCHARGE PORT 1 High reading would indicate a High viscosity small diameter discharge line or long discharge line b Gate valve is partially closed c Filter is plugged d Vertical head did not consider a high specific gravity liquid e Line is partially p...

Страница 17: ...tern on all parts Rapid wear occurring in a few minutes hours or days shows up as heavy grooving galling twisting breaking or similar severe signs of trouble See Rapid Wear Table RAPID WEAR RAPID WEAR TABLE CAUSE EVIDENCE POSSIBLE SOLUTION 1 ABRASIVES Gouges or marks made by large hard particles a rapid wearing away of bushings from very small abrasives or anything in between Flush the system with...

Страница 18: ...d and a light coat of non detergent SAE 30 weight oil must be applied to all internal pump parts Lubricate fittings and apply grease to pump shaft extension Viking suggests rotating pump shaft by hand one complete revolution every 30 days to circulate the oil Retighten all gasketed joints before using the pump DO S DON TS Do s and Don ts for installation operation and maintenance of Viking pumps t...

Страница 19: ...ose polyurea grease Grease used for bracket bushing when seal is behind rotor Petrolatum Chevron Petrolatum Snow White Grease used for O Pro Seal Edible Grease aluminum complex Chevron FM ALC EP 0 1 2 Lubricate each grease fitting every 500 hours of operation or every six months whichever occurs first If service is severe grease more often Be sure the grease is compatible with the grease used by V...

Страница 20: ...S EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ALL WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGMENT ALL OF WHICH OTHER WARRANTIES ARE EXPRESSLY EXCLUDED THE RIGHTS AND REMEDIES UNDER THIS WARRANTY ARE AND SHALL BE THE SOLE AND EXCLUSIVE RIGHTS AND REMEDIES AGAINST VIKING EXCEPT FOR THE SPECIFIC LIABILITIES AND OBLIGATIONS PROVIDED UNDER THIS WARRANTY VIKING SHA...

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