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1. Electronic copies of the most current TSM issue can be found on the Viking Pump website at www vikingpump com TECHNICAL SERVICE MANUAL ABRASIVE LIQUID PUMPS CONTENTS Introduction 1 a es 1 Special Information 1 Safety Information 500 2 Maintenance 0 0000 ee ee 3 Disassembly 0 000 ee eee 3 Assembly 2 0 ee ee ee ee es 4 INTRODUCTION The illustrations used in this manual are for identification purposes only and should not be used for ordering parts Secure a parts list from the factory or a Viking representative Always give complete name of part part number and material with the model and serial number of the pump when ordering repair parts UNMOUNTED PUMP AND UNIT MODEL NUMBERS UNMOUNTED PUMP Units are designated by the unmounted pump model numbers followed by a letter indicating drive style FH4625 V V Belt D Direct Connected This manual deals exclusively with the F and FH 4625 pumps Figure 1 illustrates the overall appearance of the pumps in this manual L ny FIGURE 1 SERIES 4625 PUMP F AND FH SIZES a CORPORATION SECTION TSM 410 1 PAGE 1 OF 5 SERIES 4625 ISSUE D SIZES F FH SPECIAL INFORMATION 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 comp
2. G PUMP IREX WARRANTY Viking warrants all products manufactured by it to be free from defects in workmanship or material for a period of one 1 year from date of startup provided that in no event shall this warranty extend more than eighteen 18 months from the date of shipment from Viking The warranty period for Universal Seal series pumps ONLY Universal Seal models listed below is three 3 years from date of startup provided that in no event shall this warranty extend more than forty two 42 months from the date of shipment from Viking UNDER NO CIRCUMSTANCES SHALL VIKING BE LIABLE UNDER THIS WARRANTY OR OTHERWISE FOR SPECIAL INCIDENTAL INDIRECT CONSEQUENTIAL OR PUNITIVE DAMAGES OF ANY KIND INCLUDING BUT NOT LIMITED TO LOST OR UNREALIZED SALES REVENUES PROFITS INCOME COST SAVINGS OR BUSINESS LOST OR UNREALIZED CONTRACTS LOSS OF GOODWILL DAMAGE TO REPUTATION LOSS OF PROPERTY LOSS OF INFORMATION OR DATA LOSS OF PRODUCTION DOWNTIME OR INCREASED COSTS IN CONNECTION WITH ANY PRODUCT EVEN IF VIKING HAS BEEN ADVISED OR PLACED ON NOTICE OF THE POSSIBILITY OF SUCH DAMAGES AND NOTWITHSTANDING THE FAILURE OF ANY ESSENTIAL PURPOSE OF ANY PRODUCT THIS WARRANTY IS AND SHALL BE VIKING S SOLE NOTE If the capacity of the pump has decreased after long AND EXCLUSIVE WARRANTY AND SHALL BE IN term operation it is sometimes possible to increase the LIEU OF ALL OTHER WARRANTIES EXPRESS capacity again by removing 1 or mo
3. OCKNUT HEAD CASING at BUSHING CAPSCREW WASHER HEAD BEARING RETAINER GASKETS ROTOR amp SHAFT FIGURE 3 CUTAWAY VIEW OF SERIES 4625 ASSEMBLY should be positioned so that the face of the bushing is 0625 All parts should be examined for wear before the pump is put together When making major repairs such as replacing a rotor and shaft it is advisable to install a new casing bushing INSTALLING CASING BUSHING The casing bushing can be replaced in the following manner Insert a bar approximately 9375 diameter and at least 3 5 long in the seal end of the casing and press the bushing out of the casing When installing a new bushing an arbor press should be used Coat the bushing with light lube oil and press the bushing into the bore from the head end The bushing SECTION TSM 410 1 ISSUE D PAGE 4 OF 5 below the surface of the step machined for the seal seat see Figure 4 1 Clean all parts thoroughly 2 Coat the complete seal seat with light oil and install it into the casing Make sure that the pins on the backside of the seat go into the slots provided for them in the casing Putting a light pencil line in the bore of the seal seat in line with the pins will help keep the pins in proper alignment with the holes 3 Coat the rotor shaft with light oil Slide the mechanical seal wave spring onto the shaft Coat TECHNICAL SERVICE MANUAL ABRASIVE LIQUID PUMPS pace 5OF5 the bore and lapped face of the ro
4. T BE FOLLOWED AND ADHERED TO AT ALL TIMES ae Warning In addition to possible serious Symbol Paner E FAETO ONON Me naea eg injury or death failure to follow the instruction may result in serious injury DORNING indicated instruction may cause damage Legend g or death to pump and or other equipment BEFORE opening any liquid chamber pumping WARNING INSTALL pressure gauges sensors next to the chamber reservoir relief valve adjusting cap fitting pump suction and discharge connections to monitor etc be sure that pressures e Any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings or connections USE extreme caution when lifting the pump Suitable lifting devices should be used when appropriate Lifting e The pump drive system means motor turbine eyes installed on the pump must be used only to lift engine etc has been locked out or otherwise WARNING the pump not the pump with drive and or base plate been made non operational so that it cannot be If the pump is mounted on a base plate the base plate started while work is being done on the pump must be used for all lifting purposes If slings are used for lifting they must be safely and securely attached For weight of the pump alone which does not include the drive and or base plate refer to the Viking Pump product catalog i gt e You know what material the pump has been handling hav
5. able to properly repair Series 4625 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 1 Soft Headed Hammer 2 Allen Wrenches Some mechanical seals and set collars 3 Adjustable Hook Spanner Wrench 2 810 043 375 4 Arbor Press DISASSEMBLY 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 discharge lines or other appropriate openings or connections That the driving means motor turbine engine etc has been locked out or made non operational so that it cannot be started while work is being done on pump That you know what liquid the pump has been handling and the precautions necessary to safely handle the liquid Obtain a material safety data sheet MSDS for the liquid to be sure these precautions are understood Failure to follow above listed precautionary measures may result in serious injury or death Review Fig 2 and 3 before proceeding with disassembly 1 Remove Locknut and Lockwasher from the drive end of the shaft Be sure to bend up the tab of the lockwasher before attempting to remove locknut 2 Remove Packing Nut Remove the Capscrews and the Head from the pump It may be neces
6. e obtained a material safety data sheet MSDS for the material and understand and follow all precautions appropriate for the safe handling of the material DO NOT attempt to dismantle a pressure relief valve that has not had the spring pressure relieved or is BEFORE operating the pump be sure all drive guards mounted on a pump that is operating are in place AVOID contact with hot areas of the pump and or drive Certain operating conditions temperature control devices jackets heat tracing etc improper installation improper operation and improper maintenance can all cause high temperatures on the pump and or drive DO NOT operate pump if the suction or discharge piping is not connected DO NOT place fingers into the pumping chamber or its connection ports or into any part of the drive train if there is any possibility of the pump shafts being rotated i THE PUMP must be provided with pressure protection This may be provided through a relief valve mounted DO NOT exceed the pumps rated pressure speed and directly on the pump an in line pressure relief valve temperature or change the system duty parameters WARNING a torque limiting device or a rupture disk If pump from those the pump was originally supplied without rotation may be reversed during operation pressure WARNING confirming its suitability for the new service protection must be provided on both sides of pump Relief valve adjusting screw caps m
7. late discharge pressure SPECIAL MECHANICAL SEALS Extra care should be taken in repair of these pumps Be sure to read and follow all special instructions supplied with your pump MAINTENANCE Model 4625 pumps are designed for long trouble free life under a wide variety of application conditions with a minimum of maintenance however the following should be considered 1 LUBRICATION External lubrication must be applied slowly with a handgun to all lubrication fittings every 500 hours of operation with multi purpose grease NLGI 2 Do not over grease Applications involving very high or low temperatures will require other types of lubrication Refer to Engineering Service Bulletin ESB 515 Consult factory with specific lubrication questions 2 END CLEARANCE ADJUSTMENT After long term operation it is sometimes possible to improve the performance of the pump without major repair through adjustment of the end clearance of the pump Refer to instructions under Reassembly of the pump for information regarding this procedure 3 CLEANING THE PUMP It is good practice to keep the pump as clean as possible This will facilitate inspection adjustment and repair work 4 STORAGE lf the pump is to be stored or not used for any appreciable length of time it should be drained and a light coat of lubricating and preservative oil should be applied to the internal parts SUGGESTED REPAIR TOOLS The following tools must be avail
8. letely vented through the suction or discharge lines or other appropriate openings or connections That the driving means motor turbine engine etc has been locked out or made non operational so that it cannot be started while work is being done on pump That you know what liquid the pump has been handling and the precautions necessary to safely handle the liquid Obtain a material safety data sheet MSDS for the liquid to be sure these precautions are understood Failure to follow above listed precautionary measures may result in serious injury or death ROTATION Viking pumps operate equally well in a clock wise or counterclockwise rotation Shaft rotation determines which port is suction and which is discharge Port in the area where the pumping elements gear teeth come out of mesh is suction port VIKING PUMP INC A Unit of IDEX Corporation Cedar Falls IA 50613 USA SAFETY INFORMATION AND INSTRUCTIONS IMPROPER INSTALLATION OPERATION OR MAINTENANCE OF PUMP MAY CAUSE SERIOUS INJURY OR DEATH AND OR RESULT IN DAMAGE TO PUMP AND OR OTHER EQUIPMENT VIKING S WARRANTY DOES NOT COVER FAILURE DUE TO IMPROPER INSTALLATION OPERATION OR MAINTENANCE THIS INFORMATION MUST BE FULLY READ BEFORE BEGINNING INSTALLATION OPERATION OR MAINTENANCE OF PUMP AND MUST BE KEPT WITH PUMP PUMP MUST BE INSTALLED OPERATED AND MAINTAINED ONLY BY SUITABLY TRAINED AND QUALIFIED PERSONS THE FOLLOWING SAFETY INSTRUCTIONS MUS
9. re head gaskets If this OR IMPLIED INCLUDING BUT NOT LIMITED is done be sure to turn pump over by hand before starting TO ALL WARRANTIES OF MERCHANTABILITY DO NOT OPERATE PUMP DRY make sure there is FITNESS FOR A PARTICULAR PURPOSE AND a supply of liquid in the suction line prior to start up NON INFRINGEMENT ALL OF WHICH OTHER WARRANTIES ARE EXPRESSLY EXCLUDED See complete warranty at www vikingpump com HEAD FACE 3 2013 Viking Pump Inc CORPORATION All rights reserved VIKING PUMP INC A Unit of IDEX Corporation Cedar Falls IA 50613 USA
10. sary to tap the drive end of the shaft to loosen the head DO NOT PRY the head from the casing as this may damage the gasket surface 4 Slide the rotor and shaft from the casing It may be necessary to tap lightly on the drive end of the shaft in order to slide the shaft through the ball bearing bore The rotary member of the mechanical seal will stay with the Rotor amp Shaft when removed 5 Remove the ball bearing and bearing retainer washer from the casing bore 6 Remove the rotary member of the mechanical seal from the rotor shaft Carefully inspect the ceramic face for wear and the o ring in I D of the rotary member for cuts or other signs of damage Replace if necessary 7 Remove the seal seat from the casing Use a simple tool such as a wire or old screwdriver with a short hook bent on the end Slide this hook into the crevice between the seal seat and casing bushing and pull the seat out the head end of the casing Inspect face for wear It is recommended that a new mechanical seal be used every time a pump is dissembled SECTION TSM 410 1 ISSUE D PAGE 3 OF 5 D a thle FIGURE 2 EXPLODED VIEW SERIES 4625 Pa roan Ds eeasertng id me Ta Locka o fes o e e P Packing no EEC 8 erm Ca sasen fo menmas o a ee e washer Bearna Retaner 10 Rotorana sean s fosos OOO MECHANICAL me ROTARY MEMBER a J CASING GREASE SEAL E FITTING BALL j BEARING IDLER LOCKWASHER j IDLER PIN L
11. tary member of the mechanical seal with light oil and slide onto the rotor shaft Position the drive pins in two holes in back of the rotor Slide the rotor into the pump casing 4 Place nine 0 002 inch 018 inch total gaskets on the head Place the idler on the head and install into the pump casing Install three capscrews every other one tighten finger tight then loosen one turn 5 Slide bearing retainer washer onto the drive end of the rotor shaft and position against the shoulder on the shaft Slide the ball bearing onto the shaft and into the bore of the casing as far as it will go easily At this point slide a sleeve over the drive end of the shaft and up against the inner race of the bearing and press the bearing into place 6 Install the lockwasher amp locknut Tighten the locknut to 15 20 ft lbs Torque F FH Tighten the nut securely and bend the tang of the lockwasher into the slot of the locknut NOTE Hold the rotor shaft from turning while tightening the locknut by fastening a wrench on the flat of the shaft Install the packing nut and tighten securely Tighten the three capscrews Add or remove gaskets using either 001 or 003 until the rotor drags slightly on the head then add two 001 thick gaskets End clearance is now set properly Put in the remaining three capscrews and double check to be sure the rotor is free to turn SECTION TSM 410 1 SERIES 4625 SIZES F FH ISSUE D VIKIN
12. ust 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 Pp PP BEFORE operating the pump be sure that e Itis clean and free from debris Pip PPP WARNING all valves in the suction and discharge pipelines flow or regulate discharge pressure For additional are fully opened information refer to Viking Pump s Technical Service e All piping connected to the pump is fully supported ngs TSM 000 and Engineering Service Bulletin and correctly aligned with the pump e Pump rotation is correct for the desired direction of flow THE PUMP must be installed in a matter that allows safe access for routine maintenance and for inspection during operation to check for leakage and monitor WARNING pump operation SECTION TSM 410 1 ISSUE D PAGE 2 OF 5 PRESSURE RELIEF VALVES 1 Viking pumps are positive placement 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 a rupture disk or other device 2 If pump rotation is to be reversed during operation pressure protection must be provided on both sides of the pump 3 Relief valve adjusting screw cap must always point towards the suction side of the pump 4 Pressure relief valves should not be used to control pump flow or regu

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