Viking Pump Technical Service Manual 270.2 for Industrial Rotary
Contents
1. FIGURE 7 SINGLE CARTRIDGE SINGLE MECHANICAL SEAL THE BEARING HOUSING ASSEMBLY DISASSEMBLY 1 Remove the retaining ring See Figure 8 2 Remove the labyrinth seal and replace if needed CAUTION The tapered roller bearings and spacers are supplied as matched sets Do not mix with cups cones or spacers from other sets CAUTION If the tapered roller bearings are not being replaced be sure to keep each cup with its respective cone because they track to each other during operation 3 Remove the bearing cones and inspect both cups and cones and spacer for wear Replace if necessary Do not remove the bearing cups unless they are to be replaced as they are pressed in ASSEMBLY 1 Press both bearing cups into the bearing housing 2 Install the matching bearing cone closest to the labyrinth seal first Apply a lubricant to the ID and into the groove on the face of the labyrinth seal and install Install the retaining ring 3 On the opposite side install the spacer remaining bearing cone and press in the lipseal BEARING CUPS BEARING SPALER OUTER BEARING CONE INNER BEARING CONE LABYRINTH SEAL FIGURE 8 SECTION TSM 270 2 ISSUE A PAGE 7 OF 12 THRUST BEARING ADJUSTMENT DANGER Before opening any Viking pump liquid chamber pumping chamber reservoir etc be sure 1 That any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings2. ISSUE A PAGE 4 OF 12 TAPERED ROLLER BEARINGS External lubrication must be applied slowly with a manual grease gun to both 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 ESB 515 Consult the factory with specific lubrication questions Pumps supplied from the factory are packed with heavy duty grease Upon disassembling the bearing housing the bearings should be cleaned and repacked with heavy duty multi purpose grease BUSHINGS The bushings used in this pump are lubricated with the product and do not require any external source of lubrication during operation PACKING ADJUSTMENT New packed pumps require initial packing adjustment to control leakage as the packing runs in Make initial adjustments carefully and do not over tighten the packing gland After initial adjustment inspection will reveal the need for packing gland adjustment or packing replacement Refer to instructions under Packing Replacement Installation page 6 regarding repacking pump CLEANING THE PUMP Keep the pump as clean as possible to facilitate inspection and repair work STORAGE If a new pump is to be stored or not used for six months or more add 5 oz of non detergent SAE 30 weight oil in the timing gear box Viking suggests rotating the pump shaft by hand one complete revolution e
3. prevent breaking The additional precautions listed below must be followed for proper installation A press must be used for installation Use Loctite amp 4203 or 411 on the outside of the bushing to hold the bushing in the housing Be certain that the bushing is straight The groove in the bushing should line up with the groove in the casing Do not stop the pressing operation until the bushing is in the proper position starting and stopping may result in a cracked bushing Check the bushing for damage after installation PEEK is a trademark of Victrex PLC Loctite amp is a trademark of Henkel Consumer Adhesives Inc SECTION TSM 270 2 ISSUE A PAGE 9 OF 12 SECTION TSM 270 2 ISSUE A PAGE 10 OF 12 SECTION TSM 270 2 ISSUE A PAGE 11 OF 12 ECHNICAL SERVICE MANUAL TOR 187 2702 PAGE 12 INDUSTRIAL ROTARY LOBE PUMP HIGH PRESSURE MODELS RL0167 40167 0257 40257 VIKING EX PUMP 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 If during said warranty period any products sold by Viking prove to be defective in workmanship or material under normal use and service and if such products are returned to Viking s factory at Cedar Falls Ilowa transportation charges prepaid a
4. the shaft 4 Install the head with the capscrews this is a temporary installation but capscrews must be tight to properly set running clearance in a later step Make sure the head is positioned properly over the locating pin 5 To install the cartridge mechanical lubricate the seal ID and pump shaft with an appropriate lubricant Slide the cartridge mechanical seal onto the shaft until the gland contacts the stuffing box face NOTE General installation instructions for other sealing options are located on page 5 6 Assemble the bracket to the casing and torque the capscrews evenly per Table 2 7 Refer now to Figure 8 on page 7 The bearing housing should already be assembled if not see BEARING HOUSING ASSEMBLY Install the O rings onto the bearing housings apply a lubricant to the o ring to ease installation Pack the bearings with a heavy duty multi purpose grease Thread the bearing housing into the bracket on the lower shaft Repeat for the upper bearing housing Rotate each bearing housing assembly clockwise until the lobes hit the pump head then back them off turn 8 Apply a liberal coating of anti seize or lubricating compound on the area of the shaft underneath the timing gear Insert the keys into the shaft keyways Install the timing gears positioned as shown in Figure 9 with arrows meshed Rotate the driver shaft by hand to be sure the timing gears are properly aligned If not check the arrows again to
5. Bearing 50 Bolt on Port 2 Req d Housing Assembly 20 Bearing Housing 2 Req d 1 for each Bearing 51 O ring for Bolt on Ports 2 Req d Housing Assembly Labyrinth Seal 2 Req d 1 for each Bearing Housing Capscrews for Bolt on Ports 1 2 NC x 1 25 Long 21 52 Assembly 12 Req d 23 Bearing Housing Assembly Items 16 18 21 43 53 Circulation Line Assembly 2 Req d 24 Dowel Pin 0 5 Dia X 0 75 Long 4 Req d 54 Pipe Plug 1 2 NPT square head 25 Bracket 60 Pipe Plug 1 8 NPT Allen Head to Seal Chamber 28 Set Screw for Bearing Housing 4 Req d 61 Washer for Seals or Packing Gland 8 Req d 29 Pipe Plug for Bearing Housing 1 8 NPT Allen Head 62 Packing Washer 2 Req d 4 Req d 30 Capscrews for Seals or Packing Gland 8 Req d 63 Pipe Plug for Seal Gland 31 Sealing Option 2 Seals or 10 Packing Rings Req d 64 Bushings for Head 2 Req d TABLE 2 Torque Specifications Item Number 2 8 30 32 35 52 RECOMMENDED TORQUE ft Ib 31 34 200 20 22 75 82 43 47 43 57 SECTION TSM 270 2 ISSUE A PAGE 3 OF 12 SPECIAL INFORMATION ROTATION Viking Industrial Rotary Lobe pumps may be operated in either a clockwise or counterclockwise rotation clockwise rotation is standard Rotation is determined by viewing the pump from the shaft end as shown in Figure 3 The circula tion line provided vents the seal chamber to the inlet port When reversing the rotation on the pump the seal chamber will experience an increase in
6. ISSUE A PAGE 6 OF 12 PUMP DISASSEMBLY DANGER Before opening any Viking pump liquid chamber pumping chamber reservoir 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 4 That the timing gearbox to cool before handling the pump The oil will become very hot during normal operation Allow the timing gearbox oil Failure to follow above listed precautionary mea sures may result in serious injury or death WARNING Do not use the circulation tubing to lift the pump or casing Make sure the casing is secured to a work bench or other stable work surface before working on the pump 1 Remove the coverplate capscrews and coverplate 2 Loosen the setscrews and capscrews on the seal gland For packing or other seals refer to the specific instructions for that option NOTE The loosening of the seal setscrews and gland capscrew should always be the first step whenever working on the pump 3 Drain the oil from the timin
7. LODED PARTS VIEW SECTION TSM 270 2 ISSUE A PAGE 2 OF 12 TABLE 1 High Pressure Option ITEM DESCRIPTION ITEM DESCRIPTION 1 Plug for Gear Case 3 8 Square Head 32 Capscrew for Bracket 1 2 NC x 1 75 L 4 Req d 2 Capscrew for Gear Case Cover 3 8 NC x 1 00 Long 34 Casing Bushing Assembly 4 Req d 3 Lipseal for Gear Case Cover 35 Capscrews for Head 1 2 NC x 1 25 Long 8 Req d 5 Gear Case Cover 37 Bushings for Casing 2 Req d 6 Pipe Plug for Fill Hole 3 4 NPT 38 Lobe Shaft Assembly Driver 7 O Ring for Head and Gear Case Cover 2 Req d 39 Lobe Shaft Assembly Driven 8 Locknut W 08 2 Req d 40 Head Bushing Assembly y Retaining Ring for Bearing Housing Assembly 9 Lockwasher Req d 43 2 Req d 1 for each Bearing Housing Assembly 10 Timing Gear for Driver Shaft 44 Pressure Relief Fitting for Bearing Housing 2 Req d 11 Timing Gear for Driven Shaft 45 Capscrews for Bearing Housing Cover Plate 4 Req d 12 Key for Timing Gears 3 8 x 1 38 Long 2 Req d 46 Cover Plate for Bearing Housing Bracket 2 Req d Lip Seal for Bearing Housing 2 Req d 1 for each Grease Fitting for Bearing Housing 1 8 NPT 2 16 48 Bearing Housing Assembly Req d Tapered Roller Bearing Set 2 Req d 1 for each y 16 Bearing Housing Assembly 49 Packing Gland 2 Req d 19 O Ring for Bearing Set 2 Req d 1 for each
8. TECHNICAL SERVICE MANUAL INDUSTRIAL ROTARY LOBE PUMP HIGH PRESSURE MODELS RL0167 40167 0257 40257 CONTENTS Introduction Safety Information Exploded Parts View Torque Specifications Special Information Maintenance Suggested Repair Tools Mechanical Seal Information Disassembly Bearing Housing Information Assembly Installation of PEEK Bushings Warranty gt INTRODUCTION The illustrations used in this manual are for identification purposes only and cannot be used for ordering parts Obtain a parts list from the factory or a Viking representative Always give a complete name of part part number and material with the model number and serial number of pump when ordering repair parts The unmounted pump or pump unit model number and serial number are on the nameplate This manual deals only with Viking Rotary Lobe Pumps Specifications and recommendations are listed in Catalog Section 270 UNMOUNTED PUMP AND UNIT MODEL NUMBERS UNMOUNTED PUMP UNITS eee eee Units are designated by the un mounted pump model numbers followed by a letter indicating the drive style RLO167 RL40167 R Viking Speed Reducer RLO257 RL40257 P Commercial Speed Reducer PEEK is a trademark of Victrex PLC IREX IDEX CORPORATION SECTION TSM270 2 PAGE 1 ISSUE B FIGURE 1 RL40257 HIGH PRESSURE DESIGN DANGER Incorrect installation operation or maintenance of
9. acking rings with an appropriate lubricant Install and seat each ring of packing one at a time staggering the ring joints 90 apart Push each ring in by hand using the packing gland or by tightening two opposite packing gland capscrews 4 Install the packing gland washers and capscrews Tighten the packing gland until it becomes snug Do not over tighten 5 On start up of the pump carefully tighten the gland to reduce leakage until a desired leakage rate is obtained Excess leakage during the break in period is necessary to help lubricate and cool the packing A maximum adjustment of approximately 1 8 turn at a time is recommended If during this period heating occurs back off the gland and allow to run until stuffing box cools Then begin readjustment NOTE Some leakage is required for packing lubrication The amount will vary depending on the application Consult your authorized Viking representative for more information BRACKET CASING V ieee PACKING PACKING BUSHING Low GLAND FIGURE 5 PACKING WASHER Labyrinth Seal All labyrinth seals contain 4 common parts Stationary Element Stationary O ring Rotating Element Rotating O ring It is recommended to replace any O rings that are removed from their initial seat It is recommended to replace the entire seal if the stationary and rotating elements become separated SECTION TSM 270 2
10. apscrew and coverplates 2 Turn the centering tabs inward Unlock the setscrews securing the sleeve to the shaft 3 Follow steps 3 through 10 of PUMP DISASSEMBLY on page 7 4 Remove the four capscrews and washers that hold each seal in place and remove the seals INSTALLATION NOTE The tightening of the capscrews and seal setscrews should be the final step in pump assembly 1 Follow steps 1 through 3 of ASSEMBLY on page 8 2 Lubricate the ID of the seals 3 Install the seals on the shafts with the flats toward each other 4 Secure the seal gland loosely to the casing with washers and capscrews 5 Follow the remaining steps 6 through 13 of ASSEMBLY 6 Turn the centering tabs outward Maga DN EG Gap Raf N TE h Mc Af ACA LU Lg s s ESOS ram ET d i 4 m Fa Pur BER S PESE DUTE ERE RE WETTER dowd FIGURE 4 TRIPLE LIP CARTRIDGE SEAL SECTION TSM 270 2 ISSUE A PAGE 5 OF 12 Optional Packing Replacement Only REMOVAL 1 Remove the packing gland capscrews 2 If the pump bracket is still assembled there is enough room to slide the packing gland back and pull out the packing with a packing hook without further disassembly INSTALLATION 1 Follow steps 1 through 4 of ASSEMBLY on page 8 2 Clean the stuffing box thoroughly and check the shaft for smoothness Scored shafts should be replaced 3 Lubricate the p
11. earing housing setscrews on both sides of the bracket and reinstall the pipe plugs 7 Repeat this procedure for the other lobe Caution Recheck to make sure locknuts are tight If left loose the end clearance may be lost resulting in pump seizure SECTION TSM 270 2 ISSUE A PAGE 8 OF 12 PUMP ASSEMBLY WARNING Do not use the circulation tubing to lift the pump or casing Make sure the casing is secured to a work bench or other stable work surface before working on the pump 1 If the casing or head bushings are worn or grooved install new bushings Refer to INSTALLATION OF PEEK BUSHINGS page 9 Head bushings are not generally field replaceable If these bushings are worn or grooved consult the factory or you local distributor 2 Coat the bottom casing bushing bore with light oil then gently slide the driven lobe shaft assembly shorter shaft into place Hold the shaft as horizontal as possible when installing this helps to avoid damaging the bushing when the step on the shaft slides into the bushing bore Slide the lobe shaft assembly all the way into the casing Repeat this process with the driver lobe shaft assembly again being careful not to damage the bushing on the shaft s multiple steps 3 Establish the initial shaft placement to accept the timing gears Position the shafts so the keyway for the driver timing gear will be located at 6 o clock and the driven at 3 o clock as viewed from the input end of
12. equipment may cause severe personal injury or death and or equipment damage This information must be read fully before begin ning installation operation or maintenance and must be kept with the pump It is suggested that suitably trained or qualified persons perform all installation and maintenance procedures DANGER Before opening any Viking pump liquid chamber pumping chamber reservoir 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 2 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 3 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 4 That the timing gearbox to cool before handling the pump The oil will become very hot during normal operation Allow the timing gearbox oil Failure to follow above listed precautionary mea sures may result in serious injury or death VIKING PUMP INC e A Unit of IDEX Corporation Cedar Falls IA 50613 USA CARTRIDGE MECHANICAL SEAL PACKING CARTRIDGE LIPSEAL NA ei eaa ims r REFER TO OPTIONS FIGURE 2 EXP
13. g gear case by removing the pipe plug item 1 Remove the capscrews then carefully slide the gear case off the driver shaft 4 Remove the capscrews and shaft guards from the bracket 5 Remove the capscrews and head 6 Straighten out the bearing lockwasher tab on both shafts see figure 6 Place a wooden block or brass bar in between the lobes to block rotation of the shafts Use the spanner wrench Suggested Repair Tools 5 to remove the locknut Remove the wooden block and insert on the opposite side to restrict movement of the other shaft Remove the second locknut Remove both of the lockwashers Bearing Lockwasher Tabs 3 8 Jackscrew Holes FIGURE 6 7 Slide the timing gears off the shafts If the timing gears do not come off easily use jackscrews Suggested Repair Tools 6 figure 6 8 Loosen the setscrews item 28 in the bracket that secures the bearing housings 9 Remove the Bearing Housing Assemblies using the spanner wrench Suggested Repair Tools 4 For complete Bearing Housing Disassembly see page 7 10 Remove the capscrews item 32 and the bracket 11 Remove the four capscrews and washers that hold each cartridge mechanical seal in place and remove the seals Refer to figure 4 For other optional sealing instructions refer to Mechanical Seal Information on pages 5 and 6 12 Remove the driven and driver lobe shaft assemblies T E ana Ne i MTT 1
14. make sure they are positioned as shown in Figure 9 9 Remove the pump head 10 Adjust the bearing housing assembly to position the 11 lobes slightly extended approximately 1 8 inch beyond the front face of the casing Place a wooden block or brass bar in between the lobes to block rotation Install lockwashers and locknuts and tighten with the spanner wrench Locknuts must be tightened to 200 ft Ibs torque This torque is required to obtain the proper bearing preload and ensure the bearing timing gear assembly is locked securely on the shaft This torque can be simulated by applying approximately 200 pounds of weight with a one foot wrench or 100 pounds of weight with a two foot wrench Set the end clearance refer to End Clearance Adjustment on page 8 12 Inspect the lipseal in the gear case and replace if needed Put the o ring in place then install the gear case by visually centering the lipseal over the shaft Install the capscrews and torque evenly Fill with gear oil to the bottom of the fill hole approximately 15 ounces 13 Place the o ring and reinstall the head The word INLET cast into the head must be placed on the suction port side of the pump Figure 10 Torque the head capscrews per Table 2 14 Tighten the setscrews in each seal 15 Replace the coverplate A a INLET PORT FIGURE 10 Installation Of Peek Bushings When installing the bushings extreme care must be taken to
15. nd if the products are found by Viking to be defective in workmanship or material they will be replaced or repaired free of charge FOB Cedar Falls lowa Viking assumes liability for consequential damages of any kind and the purchaser by acceptance of delivery assumes all liability for the consequences of the use or misuse of Viking products by the purchaser his employees or others Viking will assume no field expense for service or parts unless authorized by it in advance Equipment and accessories purchased by Viking from outside sources which are incorporated into any Viking product are warranted only to the extent of and by the original manufacturer s warranty or guarantee if any THIS IS VIKING S SOLE WARRANTY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED WHICH ARE HEREBY EXCLUDED INCLUDING IN PARTICULAR ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE No officer or employee of IDEX Corporation or Viking Pump Inc is authorized to alter this warranty CORPORATION MEX VIKING PUMP INC e A Unit of IDEX Corporation e Cedar Falls IA 50613 USA a Ts
16. or connections Thatthe 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 4 That the timing gearbox to cool before handling the pump The oil will become very hot during normal operation Allow the timing gearbox oil Failure to follow above listed precautionary mea sures may result in serious injury or death 1 Remove the pump head if it is not already off 2 Remove the pipe plugs from the bracket and loosen the setscrews on the bearing housing 3 Using the pin style spanner wrench turn the bearing housing counter clockwise as viewed from shaft end until the lobe is touching the bottom of the casing bore 4 Using a depth micrometer measure the depth from the front face of the casing to the face of the lobe this is the total end clearance 5 Multiply total end clearance by 0 6 Turn the bearing housing clockwise until the lobe is this distance from the front face of the casing Caution The end clearance must be set while turning the bearing housing assembly clockwise f it is set while turning counter clockwise the lobes may float and cause damage or galling 6 Evenly tighten the b
17. pressure which may affect seal performance Refer to seal manufacture s specifications or contact the factory for recommended pressure limits If rotation is reversed this line should be switched to the op posite port x RR YR cad INLET FOR T i m d a d CLOCKWISE F as ROTATION 2 STD 4 INLET FOR COUNTER CLOCKWISE ROTATION i Siem Dana ki FRE M 5 FIGURE 3 PRESSURE RELIEF VALVES Viking Industrial Rotary Lobe pumps are positive displacement pumps and must be provided with some sort of pressure protection An inline pressure relief valve a torque limiting device or a rupture disk must be provided in the pumping system MAINTENANCE LUBRICATION CAUTION Pumps are supplied without gear case oil Be sure to add the proper amount and type of lubricant be fore operating the pump Do not overfill GEAR CASE Use a grade of gear lube oil with EP Extreme Pressure additive for the ambient temperature range EP150 0 32 F EP220 32 85 EP320 above 85 F Refer to Figure 3 Remove the pipe plug from the fill hole and add 15 oz of the specified lubricant Fill to the bottom of the fill plug hole After 100 hours of operation drain and refill with new lubricant Check the oil level regularly and add lubricant as necessary Drain and refill with new lubricant every 12 months or 3000 hours of operation whichever comes first SECTION TSM 270 2
18. 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 4 That the timing gearbox to cool before handling the pump The oil will become very hot during normal operation Allow the timing gearbox oil Failure to follow above listed precautionary mea sures may result in serious injury or death DANGER Before starting pump be sure all drive equipment guards are in place Failure to properly mount guards may result in seri ous injury or death Cartridge Mechanical Seal Replacement Replacement of the cartridge mechanical seal requires disassembly of the pump Follow the pump disassembly and assembly instructions See pages 7 through 9 for standard mechanical seal replacement Optional Cartridge Lipseal Seal Replacement NOTE Good radial alignment is required for proper operation of the seals This is accomplished by the use of centering tabs provided with each seal Turn the tabs inward when installing or removing the seal Turn them outward for normal operation of the pump Replacement of the cartridge seal disassembly of the pump lipseal requires REMOVAL NOTE The loosening of the seal setscrews and gland capscrews should always be the first step whenever working on the pump 1 Remove the coverplate c
19. very 30 days to circulate the oil SUGGESTED REPAIR TOOLS The following tools must be available to properly repair Viking Industrial Rotary Lobe pumps These tools are in addition to standard mechanics tools such as open end wrenches pliers screw drivers etc Most items can be obtained from an industrial supply house Soft headed hammer Allen wrenches Depth micrometer 0 1 Range Bearing Locknut Spanner Wrench Adjustable Face Pin Style 3 16 Dia Pin 5 Adjustable Hook Spanner Wrench for 1 1 4 to 3 diameter 6 Jackscrews 3 8 UNC by 3 length capscrew threaded the entire length 3 Required 7 Brass bar or wood block 8 Arbor Press Boma MECHANICAL SEAL INFORMATION The Industrial Lobe series pump can be supplied with a variety of mechanical sealing configurations and materials The cartridge mechanical seal is considered standard construction General installation and replacement instructions for the optional lipseal and packing are provided It is also recommended to review the seal manufacture s instructions for a specific seal DANGER Before opening any Viking pump liquid chamber pumping chamber reservoir 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
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