MN01029
Contents
1. The procedure for checking clearances on all meters covered by this manual are identical For this reason all illustrations are of the T 11 Meter In order to check the clearances in a meter the rotor assembly must first be placed in the bottomed position using the following methods T 11 or I 75 Meter Method No 1 Turn adjusting screw on bottom of housing clockwise until rotor assembly meets friction and is hard to turn At this point the meter is resting on the bottomshelf of the housing Then raise rotor just enough for it to be free of the base by turning same adjusting screw counterclockwise Blade Roller Over Natural Radius Portion of Cam Blade Tip Toward Housing 5 to Rotor 3 T 11 or 1 75 002 004 004 008 T 20 or 1 150 002 004 005 009 T 40 002 004 006 010 SC 13 002 004 005 009 SD3 S1 or SD 30 002 004 006 010 SF4 006 005 011 SG6 006 007 013 SD NF 004 006 010 T40 NF 004 006 010 0015 0040 0015 0035 0015 0035 001 004 0015 0035 0015 0045 0015 0055 0015 0035 0015 0035 000 003 000 003 000 005 001 005 000 008 001 005 000 005 001 005 000 004 001 005 004 006 000 004 001 005 000 005 001 005 000 005 001 005 001 005 001 003 001 005 0035 0055 0035 0050 003 005 0035 00502. Readjust calibrator See MNO1028 Pg 4 Oversize clearances in meter Check meter clearances See Pg 12 Product being eliminated through vent line See below Product being eliminated through vent line Air eliminator cylinder seal damaged Replace cylinder seal Air eliminator float ruptured Replace float Foreign particles on cylinder sealing surfaces Clean sealing surfaces System fails to shut off properly after delivering preset quantity Linkage out of adjustment between set stop counter and valve Adjust linkage correctly Improper setting of Minimum Setting in set stop counter See Pushbutton Set Stop Counter Service Manual Mechanical obstruction in valve Disassemble and remove obstruction Inspect valve internals for damage Defective pushbutton set stop counter See Troubleshooting Section in Push button Set Stop Counter Service Manual Plugged orifice Check orifice in upper piston of P 2 or PG 2 Valve pressure system only Restricted product flow through meter Strainer clogged Clean strainer Replace if necessary Butterfly valve in air eliminator restricting flow Repair or replace Back pressure or manual valves do not open Disassemble and inspect for foreign particles and or defects Repair Mechanical obstruction in meter Disassemble and remove obstruction Inspect meter internals for dama
3. TX USA 1 361 289 3400 Ellerbek Germany 49 4101 3040 Los Angeles CA USA 1 310 328 1236 Kongsberg Norway 47 32 286700 Barcelona Spain 34 93 201 0989 Melbourne Australia 61 3 9807 2818 Dubai United Arab Emirates 971 4 883 0303 Beijing China 86 10 6500 2251 Moscow Russia 7 495 5648705 Buenos Aires Argentina 54 11 4312 4736 Singapore 65 6861 3011 Burnham England 44 1628 603205 Visit our website at www fmctechnologies com measurementsolutions Printed in U S A 6 11 FMC Technologies Measurement Solutions Inc All rights reserved MNO1029 Issue Rev 0 5 6 11
4. 11 Section 3 Meter Repairs continued 7 If fixture does not pass through cleanly see Figure 61 then remove hold down screws and cam Check housing for distortion in area of dwell on cam 8 If fixture passes but a gap is noticed between the fixture and cam face a Reinstall blade assembly into rotor and reas semble meter observing specifically the Blade Tip Toward Housing see Page 12 If clearance is acceptable finish the reassembly If blade tip clearance is excessive consider possible worn blade and replace if necessary Note Be sure to tighten the two hold down screws before reassem bling the meter Figure 61 Issue Rev 0 5 6 11 MN01029 e Page 17 Section 4 Troubleshooting Table Problem Cause Remedy Over registration register ing more volume than pass ing through meter Air passing through meter Check air eliminator Calibrator out of adjustment Readjust calibrator See MNO1028 Pg 4 Leaky valve in prover system during test run Repair prover valve and rerun test Under registration register ing less volume than pass ing through meter Mechanical friction in meter Check all meter clearances See Pgs 12 through 13 Check bearings for tightness Binding or misalignment in driven accessories Inspect accessories Repair or replace Loose gear train or slipping drives Repair or replace Calibrator out of adjustment
5. 11 and I 75 Meters Removing Rotor Assembly From Housing 1 Remove all accessories from top of meter The calibrator does not have to be removed unless jackshaft and gear pinion gear or packing gland have to be replaced 2 Remove meter housing cover Figure 3 Slots are provided around the perimeter of the cover to assist in prying the cover from the housing ETE Figure 3 When replacing cover turn adjusting screw in bottom of housing to the extreme clockwise position This will place the rotor assembly on the bottom of the housing and allow the cover to be firmly secured to the housing If rotor assembly is not bottomed it is possible to dam age the cover when it is tightened to the housing 2 Available through Smith Parts Operation Reference Form No P1205 Before replacing cover apply a thin layer of seal ant Master Gasket by Loctite is recommended around the perimeter of the cover to form a seal between the housing and the cover If a sealant is not used fluid may leak out of the cover NOTE Meters with O Rings DO NOT require a Master Gasket At reassembly care must be taken that the jack shaft gear Figure 3 and rotor gear Figure 4 Figure 4 are properly meshed when the cover is assembled to the meter body This is accomplished by slowly rotating the calibrator output drive shaft as the cover is lowered onto the meter housing until the rotor and jackshaft gears mesh 3 Remo
6. 11 or l 75 Meter can have the rotor and adjust ments made without removing the calibrator on top of the meter An access hole is available on the bottom of the meter for this adjustment Figure 33 Figure 33 Figure 34 For purposes of illustration the meter has been placed on its side for this series of pictures However when actually performing this adjustment the meter must be in a vertical position 1 With access plug removed rotate rotor through either housing port and turn adjusting screw using a 1 4 Allen wrench counterclockwise until resistance is felt in the rotor rotation Figure 34 e If rotor is already hard to turn then turn adjusting screw clockwise until rotor just begins to rotate 2 Rotor is now in the full top position Mark this position on the hub of the meter Point A Figure 34 Also mark Allen wrench for reference Point B Figure 34 Issue Rev 0 5 6 11 MN01029 e Page 9 Section 1 General Information and Description continued Figure 35 3 With rotor revolving turn Allen wrench clockwise slowly until rotor again meets resistance Figure 35 4 Rotor is now in the full down position Mark this posi tion Point C on hub Figure 35 5 Turn Allen wrench counterclockwise until Points A and B are realigned as in Figure 35 Figure 36 6 Now turn Allen wrench clockwise until Point B on Allen wrench is 1 3 distance from Point A Figure 36 Rotor should no
7. Checks Section of this manual and perform all necessary checks to fit new rotor into housing After rotor is fitted to housing refer to Adjusting Rotor End Clearances Page 9 Replacing Blade Assembly 1 Install appropriate spider see Suggested Tools and Fixtures Page 2 and perform clearance checks as outlined in Clearance Check Section of this manual 2 In most instances clearances with new blades will be found to be too close When this is the case the complete rotor assembly must be removed and the blade ends dressed down Figure 57 shows the proper manner in which to accomplish this filing operation Use a vise with soft jaws or otherwise properly protect the blade held by the vise A Vixen babbit metal file is recommended for aluminum blades A mill coarse file should be used on cast iron blades Issue Rev 0 5 6 11 MNO01029 e Page 15 Section 3 Meter Repairs continued Figure 57 Caution Care should be taken not to remove too much metal from the blade Also blades should have sharp square clean cut edges 3 After all the blade ends have been dressed down reinstall rotor assembly back into the housing Recheck clearances f not enough metal is removed the first time the process must be repeated until the desired clearances are obtained 4 Record these measurements as As Assembled clearances 5 Adjust rotor end clearances after the meter is completely assembled as outlined o
8. bearing and lower bearing shield Figure 25 If replacement of tungsten carbide outer radial bear ings is necessary it is recommended that complete Figure 24 Issue Rev 0 5 6 11 MN01029 e Page 7 Section 1 General Information and Description continued Figure 25 next level assemblies rotor gear plate or rotor subassembly be procured with bearings already installed or capabilities must permit epoxying bearings in precise alignment 6 The blades are matched to their own slots Therefore before removing blades from the rotor the blades and rotor slots must be matched marked Figure 26 shows one method of marking blade and rotor Using a marker make identical notches in this case two on the back end of the blade and on rotor area next to blade slot It is unnecessary to mark opposite paddle of blade for obvious reasons Figure 26 7 The lower blade assembly can now be removed Because of the position of the rollers it will be necessary to maneuver the blade assembly out of the rotor Handle blade carefully so that edges of blades are not damaged e If rollers require replacement refer to Page 12 for replacement procedure e See Figure 27 for alternate blade and rotor bearings 8 The cam and shaft assembly is lifted out of the rotor Figure 28 The cam is secured to the shaft by a key Figure 28 Standard Rotor oO Tungsten Carbide Rotor Bearing Standard Blade
9. measurementsolutions When request ing literature from Literature Fulfillment please reference the appropriate bulletin number and title Parts Lists Specifications Form No Bulletin S801003 P0565 Bulletin 5801002 P0566 Bulletin 5801029 P0567 Bulletin S801005 P0538 Bulletin 5801007 P0539 Bulletin 5801009 P0540 Bulletin S801009 P0541 Bulletin 5801009 P0542 Installation Operation All Modele A Bulletin MNO1028 The latest edition is indicated by a 2 digit postscript e g 01 02 etc Revisions included in MNO1029 Issue Rev 0 5 6 11 Page 12 Adjusted Clearance Guide Measurements in Table The specifications contained herein are subject to change without notice and any user of said specifications should verify from the manufacturer that the specifications are currently in effect Otherwise the manufacturer assumes no responsibility for the use of specifications which may have been changed and are no longer in effect Contact information is subject to change For the most current contact information visit our website at www fmctechnologies com measurementsolutions and click on the Contact Us link in the left hand column Headquarters 500 North Sam Houston Parkway West Suite 100 Houston TX 77067 USA Phone 1 281 260 2190 Fax 1 281 260 2191 Measurement Products and Equipment Integrated Measurement Systems Erie PA USA 1 814 898 5000 Dubai United Arab Emirates 971 4 883 0303 Corpus Christi
10. to mark the opposite blade paddle for obvious reasons Do not mark outside edge of rotor 4 The lower blade assembly can now be removed Figure 15 E e Figure 15 Because of the position of the rollers it will be necessary to maneuver the blade assembly out of the rotor Handle blade carefully so that the edges of the blades are not damaged 5 Place identification marks on the upper blade yoke and rotor Figure 15 and remove from rotor Use different set of marks than used on lower blade Issue Rev 0 5 6 11 MNO01029 e Page 5 Section 1 General Information and Description continued Figure 16 6 Figure 16 shows the rotor shaft inside the rotor body The rotor body shaft and rotor cover removed in Figure 12 are factory assembled and matched as one integral piece Therefore if any one of these items is damaged the complete assembly body shaft and cover must be replaced Disassembly of Model T 20 T 40 1 150 SC SD SF and SG Meters Removing Rotor Assembly From Housing 1 Remove all accessories and calibrator from top of meter e If difficulty is encountered in removing the calibrator the adjusting stem assembly may have to be taken out of the meter cover Refer to Page 14 for adjusting stem removal 2 Remove meter housing cover Figure 17 Figure 17 Slots are provided around the perimeter of the cover to assist in prying the cover of the housing
11. 006 008 0035 0050 0035 0055 Note Standard clearances for temperatures less than 150 F and or viscosities less than 400cP Page 12 e MN01029 Issue Rev 0 5 6 11 Section 2 Clearance Checks continued Attach a spider Figure 47 to top of meter housing so that the rotor assembly is centered in the housing and free to rotate See Suggested Tools Pages 2 and 3 Method No 2 If spider is not available turn the adjusting screw on bottom of housing clockwise until rotor assembly meets friction and is hard to turn At this point the rotor is rest ing on bottom shelf of housing T 20 or 1 150 Meter Method No 1 Attach a spider to top of meter housing Turn adjusting screw in center of spider clockwise to force rotor as sembly down until it bottoms on the base of the housing Then turn adjusting screw counterclockwise until the rotor assembly is raised just enough for it to rotate freely Method No 2 If a spider is not available lift rotor assembly from me ter housing and remove adjusting spring from base of housing Replace rotor assembly Be sure that locking arm pin is fitted into the slot of the locking arm see Figure 20 At this point the rotor is resting on bottom shelf of housing With the rotor assembly in the bottomed position the following clearance checks can now be made Table 2 Clearance Guide This clearance guide lists the recommended minimum and maximum fitting c
12. Bearing and Pin E Tungsten Carbide Blade Bearing and Pin Figure 27 Figure 29 9 Mark upper blade assembly and rotor and remove blade assembly Use different set of marks than used on lower blade Note bearing key on rotor bearing Figure 29 This key is not bonded to the bearing and may fall off after shaft is removed Be sure this key is in place when shaft is reinstalled An application of vasoline will aid in Keeping the key in position 10 Remove clamping ring Figure 29 and rotor bearing Page Ge MN01029 Issue Rev 0 5 6 11 Section 1 General Information and Description continued Figure 30 11 Remove thrust bearing and snap ring Figure 30 See alternate bearings Figure 31 12 Turn the rotor over and remove gear plate Figure 32 Tungsten Carbide Thrust Bearing SC13 Meter Standard Thrust Bearing Figure 31 J Figure 32 Reassembly of Meters Reassembly is essentially the reverse of the disas sembly procedure Be sure to observe the reassembly precautions noted during teardown of unit To assist in the reassembly of the meter refer to the appropriate parts lists see Related Publications Upon reassembling the meter clearance checks are mandatory Refer to Section 2 Clearance Checks Page 12 Adjusting Rotor End Clearances Caution Before any adjustments can be made the meter must be removed from the line or drained T 11 or I 75 Meters Only The T
13. Smith Meter PD Rotary Vane Meter MC Technologies Single Case Series Service Issue Rev 0 5 6 11 Bulletin MNO1029 Models Included T Type Meters S Type Meters Contents Section 1 General Information and Description Page 2 DOSEMIPUON Rr Page 2 Suggested Tools and Fixtures kk Page 2 Disassembly of Model T 11 and l 75 Meterg AAA Page 3 Disassembly of Model T 20 T 40 I 150 SC SD SF and SG Meiers Page 6 Adjusting Rotor End Cleararices ure ee ere patte ot ra ie d E pee e dE E eren Page 9 Section 2 Clearance Checks AA Page 12 Blade Tip Toward Housing EE Page 13 BAN o a e MEAE E e La eC eu RAE ES Page 13 Blade El e a Page 13 Blade End TO e e TEE Page 14 Blade Roller Over Radius Portion of Cam Page 14 Sectiori 3 Meter Renate egal td degt edel eee et Page 15 Replacing Adjusting Stem Aesemfhy nennen nnne nnne nennen nnne enne enne nnn nnns Page 15 Replacing Packing Glarnd TEE Page 15 Installing New Le e EE Page 14 Repl cing Blade Assembly rrr eee e ette Rt dee tmi eee ena e edit eoe Ch aderat ben Page 15 Blade Roller Replacement T 20 T 40 I 150 SC SD SF and SG Meters Only ssssssss Page 16 Cam Replacement T 11 or I 75 Meters Onhy enne nnne nennen nennen nnn Page 16 Section 4 Troubleshooting Table A Page 18 Meter Clearance Recor ee ipte po ia iR nece E EO a Rura o UON n RR baia a RA P
14. When replacing cover position adjusting screw so that bottom of screw is flush with bottom of shaft bearing hub Figure 18 If adjusting screw is allowed to protrude too far into the cover bearing hub dam age to the cover could result when cover is secured to the housing Before replacing cover apply a thin layer of seal ant Master Gasket by Loctite is recommended around the perimeter of the cover to form a seal between the housing and cover If a sealant is not used fluid may leak out of the cover Figure 18 NOTE Meters with O Rings DO NOT require a Master Gasket 3 Remove rotor assembly Figure 19 and clean rotor and housing interior Figure 19 Lift straight up to prevent damage to the rotor blades f meter has been in service on crude oil or any other viscous liquid a solvent should be used to dissolve the residue Do not use water Atreassembly care must also be taken that jack shaft gear and rotor gear Figure 17 are properly meshed when cover is secured to housing This can be accomplished by slowly turning single pinion gear on top of cover until rotor and jack shaft gears mesh At reassembly the slot in the locating arm must be lined up with the locating arm pin in the bot tom of the housing Figure 20 Be sure adjusting spring Figure 20 is reinstalled at time of reassembly Page Ge MN01029 Issue Rev 0 5 6 11 Section 1 General Information and Description co
15. age 19 Section 5 Related Publications Page 20 The Most Trusted Name In Measurement Section 1 General Information and Description It is suggested that a detailed record be maintained for each meter Nameplate data clearances progres sive totalizer readings meter factor parts used and other similar information provide background material for scheduling a preventive maintenance program An increase in meter factor drift against throughput can be used as the basis for making an inspection The time of the first inspection must be based on the operating conditions imposed by the installation Flow rate lubrication properties of the fluid and the possibility of abrasive contaminants are points to consider Then at the time of inspection the condition of the meter should indicate whether the inspection interval can be lengthened or shortened All parts as they are removed should be thoroughly washed and cleaned in solvent Parts that are worn enough to affect operation or calibration should be re placed All parts that are nicked gouged or have rough places on them should be dressed with a fine file or crocus cloth as conditions warrant Before any disassembly is performed on the meter be sure that the trouble is in the meter 1 Check that meter is being operated within the proper flow rate Refer to the nameplate on the side of the meter 2 If rotor does not turn freely adjust end clearance See Adjus
16. all the Ad justing Screw until it bottoms out Install the Adjusting Cap on the Adjusting Screw Figure 41 Use a 3 4 wrench to turn the Adjusting Cap and Ad justing Screw clockwise Figure 42 Apply torque to the Jack Shaft Gear while turning the Adjusting Cap and Adjusting Screw clockwise The Jack Shaft Gear will begin to spin as the rotor height is adjusted When the rotor begins to spin mark a line and label the line A Figure 43 The rotor is now in the up position Figure 42 6 Continue to apply torque to the Jack Shaft gear while turning the Adjusting Cap The rotor will begin to drag When the rotor begins to drag stop turning the ad justment cap and put a line and label the line B as Figure 43 illustrated in Figure 44 The rotor is now in the down position Rotate the Adjusting Cap counter clockwise until the line on the Adjusting Cap is approximately 1 3 of the distance from the line A as illustrated in Figure 45 Turn the Jack Shaft gear and check for the rotor to spin free The Adjusting Cap may need to be adjusted slightly to ensure the rotor spins freely Figure 44 Figure 45 Issue Rev 0 5 6 11 MNO01029 e Page 11 Section 2 Clearance Checks Figure 46 7 Install the screw Hold the Adjusting Cap with a 34 wrench while tightening the screw with a 5 32 Allen Head wrench Figure 46 Take precaution not to move the Adjusting Cap when tightening the screw The screw must
17. be tight After tightening the screw spin the Jack Shaft gear to check the free movement of the rotor If the rotor does not move free the adjust ment will need to be redone The rotor end adjustment is now complete The Meter Adaptor can now be installed and the meter returned to service Rotor should now rotate freely If not recheck all clear ances and repeat Steps 1 through 6 8 Replace adjusting screw cap Apply Master Gasket by Loctite sealant or equivalent to top of cover to provide a good seal between cap and cover The adjusting screw cap has a hex indentation on the underside which will slip over the adjust ing screw When tightening down screw in cap do not allow the cap to rotate as this will change the adjustment The clearances listed in the Clearance Guide Table 2 are standard clearances see note and are to be used Table 2 Clearance Guide Meter Model No Rotor to Block Rotor Adj Total End Clearance 1 Blade Slot Blade End Figure 47 only as a guide in determining whether or not a part should be repaired or replaced However at no point should a clearance exceed 50 of the listed maximum The ability of the meter to obtain acceptable repeatability and linearity for the particular operating conditions such as flow rate viscosity lubricity abrasive contaminants and intermittent or continuous duty should be consid ered as a better guide rather than clearance alone
18. bled column of Meter Clearance Record Blade Slot Figure 50 This clearance check may be made with the rotor assembly either in or out of the meter housing 1 With blade positioned as shown in Figure 50 check clearances and record in As Found column of Meter Clearance Record Chart Page 19 2 Compare readings with Clearance Guide Table 2 Page 12 If slots are too wide replace rotor Refer to appropriate parts list for appropriate part number of rotor Record clearance in As Assembled column of Me ter Clearance Record Page 19 when acceptable clearances are obtained 3 Repeat above procedure on other slots Issue Rev 0 5 6 11 MNO01029 e Page 13 Section 2 Clearance Checks continued Blade End to Rotor This check can be made with the rotor assembly in the meter housing or situated on a flat even surface 1 Place depth micrometer on the rotor over the blade end as shown in Figure 51 and check findings against Clearance Guide on Page 12 e Ifa depth micrometer is not available a feeler gauge with a straight edged block of metal may be used If blade extends over rotor drop top end to meet clearance requirement If blade exceeds clearance requirement replace Figure 51 Housing Wall N Position 1 Clearance Here Figure 52 Blade Roller Over Radius Portion of Cam 1 2 Position 2 Rotate rotor until a blade is in Position No 1 as shown in F
19. ge Pump not operating pressure system Inspect pump for mechanical or elec trical defects Replace if necessary No product Supply product Air being eliminated from product Normal product flow automatically is restricted during air elimination Pump undersized Replace with pump of sufficient capacity Pump not operating properly Check pump System leaks after shutdown Linkage out of adjustment Adjust linkage correctly Defective main seat seal in valve Replace seal Foreign matter holding main valve seat open Disassemble valve and remove foreign matter Check seal for damage Large numeral counter or ticket printer not operating satisfactorily Drive coupling defective Replace Internal problems See Veeder Root Service Manual Page 18eMN01029 Issue Rev 0 5 6 11 Dueno pemo di epeig Wed JO UOlJod snipey JeAQ 10 0H eouelea y pug 80 Ipy epeig Dueno pemo di apeig Wed JO UOILOd SNIPeY J9AQ Joo opp 1010H 0 pu3 epeig LL LL LL ll LI 99s ev es GOUBIGOIH pug 80 py epeig Jequinw euas JBPOW 8 4919 N p4029H 92ueJ89 2 1919 N MN01029 e Page 19 Issue Rev 0 5 6 11 Section 5 Related Publications The following literature can be obtained from FMC Technologies Measurement Solutions Inc Literature Fulfillment at Measurement Fulfillment fmcti com or online at www fmctechnologies com
20. gure 8 3 Remove plug from bottom of housing and use a 1 4 Allen wrench to remove the adjusting screw Figure 9 Turn screw counterclockwise to remove Figure 9 4 With adjusting screw removed the adjusting collar and rotor spring Figure 10 can be lifted from the housing When replacing spring and collar slot in collar must line up with key pin in hub Figure 10 Figure 10 Page 4eMNO01029 Issue Rev 0 5 6 11 Section 1 General Information and Description continued Rotor Disassembly 1 Remove clamps and blade blocks Figure 11 from rotor assembly Figure 11 2 Using two screwdrivers pry rotor cover off rotor body Figure 12 j Figure 12 Slots are provided in the rotor cover to accept the screwdriver blades With screwdrivers in slots pry upward uniformly Do not pry downward with screwdrivers as damage could occur to the bottom edge of the rotor body Note locating pins in rotor cover Figure 13 Figure 13 3 The blades are matched to their own slots during manufacturing Therefore before removing blades from the rotor the blades and rotor slots must be matched marked to eliminate the possibility of install ing the blades in the wrong slots or 180 out of position Figure 14 Figure 14 shows one method of marking blades and rotor Using a marker make identical number of marks on the blade yoke and on an area of the rotor next to the blade slot It is unnecessary
21. igure 52 Forcing blade against housing wall check clearance between blade tip and housing wall from top to bot tom Note clearance Forcing blade away from wall again check clearance The difference between these two clearance readings is the blade roller over radius portion of cam clearance in this position Check against Clearance Guide Table 2 Page 12 Rotate rotor assembly until this same blade is in the middle of the measuring chamber Position No 2 Figure 45 Repeat Steps 2 and 3 and check findings against Clearance Guide Table 2 Page 12 Again rotate rotor until blade is in Position No 3 Figure 45 and repeat Steps 2 and 3 Check clear ances against Clearance Guide Table 2 Page 12 Repeat Steps 1 through 6 with other blade assembly Record findings if satisfactory in Meter Clearance Record Page 19 If clearances on any portion of radius of cam do not fall within recommended limits as shown in Clearance Guide Table 2 Page 12 then check the following f tolerances are in excess of recommended clearances determine if cam or blade roller is worn normally the cam will have the most wear Replace worn parts and recheck clearances The roller in an integral part of the blade assembly in T 11 and I 75 Meters In this case the entire blade assembly would have to be replaced Position 3 Page 14e MN01029 Issue Rev 0 5 6 11 Section 3 Meter Repairs Rep
22. lacing Adjusting Stem Assembly The adjusting stem assembly may be replaced as a unit or it may be disassembled and repaired If disassembly of adjusting stem is desired refer to Smith Parts List for part numbers of replaceable items See Page 21 for applicable Parts List No for each meter type To replace assembly 1 Remove knob cover 2 Unscrew the two screws securing adjusting stem assembly to meter cover and remove assembly Figure 53 Note adjusting stem adapter Be sure this adapter is in position when new or repaired adjusting stem assembly is installed Figure 53 Replacing Packing Gland Note Meter must be drained and all pressure relieved before beginning this procedure The packing gland may be replaced without having to remove the meter cover To replace packing gland 1 Remove all accessories and calibrator from top of meter 2 Remove cotter pin and drive washer Figure 54 Figure 54 3 Lift single pinion gear from jackshaft Figure 55 and remove packing gland flange 4 Lift packing gland from cover Figure 56 e If packing gland is difficult to remove with the fingers use a pair of pliers as shown in Figure 56 5 Install new packing gland and reassembled items removed in Steps 1 2 and 3 Replace packing gland gasket Figure 56 if required Y Figure 55 Figure 56 Installing New Rotor Should it become necessary to replace a rotor assembly refer to the Clearance
23. learances for repair meters Clearances may exceed the maximum shown provided the meter proves within acceptable accuracy Blade Tip Toward Housing 1 Rotate rotor until a blade is in measuring chamber Figure 47 f the spider is not used the rotor assembly may be hard to turn 2 With the blade in position push blade toward wall Figure 47 and check blade tip to housing clearance from top to bottom Record readings in As Found column of Meter Clearance Record Chart Page 19 3 Compare readings with Clearance Guide Table 2 Page 12 If readings are over maximum allowable clearance replace blade assembly If below minimum clearance the rotor assembly must be removed and the blade end dressed down see Page 17 4 After desired clearance has been obtained record measurements under As Assembled column of Meter Clearance Record Chart Page 19 5 Repeat above clearance checks Steps 1 through 4 on remaining blades Figure 49 Rotor to Block 1 Check rotor to block clearance as shown in Figure 42 and record finding in As Found column of Meter Clearance Record Chart Page 19 Clearance should be maintained the full length of the rotor 2 Compare readings with Clearance Guide Table 2 Page 12 If readings are over maximum allowable clearance replace block If below minimum clearance dress block faces with emery cloth until desired clearance is obtained Record this new clearance in As Assem
24. n Page 12 Blade Roller Replacement T 20 I 150 SC SD SF and SG Meters Remove rotor assembly from housing and disassemble as outlined on Page 2 or 6 1 With blade assembly removed from the rotor remove cotter pin and drive groove pin from blade assembly Figure 58 2 Slip roller out of slot in blade and install new roller Figure 58 3 Reinstall groove pin and cotter pin 4 Check companion roller on blade for wear or damage Replace if necessary 5 Reinstall blade assembly into rotor and reassemble meters observing all clearance checks Cam Replacement T 11 or I 75 Meters Only Disassemble meter following Steps 1 through 4 under Disassembly of Model T 11 and I 75 Meters Page 2 and 3 and proceed as follows 1 With rotor assembly removed unscrew hold down screws and lift cam straight up from housing center hub Figure 59 2 Replace locating pins as necessary Pins may remain pressed into the cam Be sure to press new pins into the housing center hub Figure 52 3 Place cam setting bushing see Suggested Tools and Fixtures Page 2 in center hub 4 Position new cam on center hub by placing it over top of cam setting bushing as shown in Figure 60 Figure 60 5 Tighten cam hold down screws 6 Place cam setting fixture see suggested Tools and Fixtures Page 2 on bottom shelf Figure 60 and slide between cam face and measuring chamber wall Page 16eMN01029 Issue Rev 0 5 6
25. ntinued Um e Figure 20 Figure 21 4 When rotor assembly is removed from the housing turn it upside down and place it on a wooden block or metal plate The wooden block or plate must have a clearance hole in the center for the shaft and must be high enough to allow the shaft to clear the table See Fig ure 1 for dimensions in constructing a wooden block f rotor assembly is to be set aside temporarily it may be laid on its side However cardboard or other suitable cushion should be placed under it to protect the blades from damage 5 The block Figure 19 can be separated from the housing by removing the two bolts in the side of the housing When replacing the block a sealant must be applied to the two block retaining bolts Master Gasket by Loctite is recommended This will prevent leakage Rotor Disassembly 1 Using an Allen wrench loosen locating arm screw and pull locating arm from shaft Figure 21 2 Remove key and retaining ring from shaft Figure 21 3 Remove clamps and blade blocks Figure 22 from assembly 4 Using two screwdrivers pry off rotor cover Figure 23 Slots are provided in the cover to accept the screwdriver blades Place screwdrivers opposite each other and pry upward uniformly Do not pry downward with screwdrivers as damage could occur to the top edge of the rotor body Note locating pins in cover Figure 24 5 The rotor cover consists of the cover Marcel ring rotor
26. ting Rotor End Clearances Page 9 3 Check calibrator for proper operation 4 Check air eliminator and strainer assembly 5 Check valve operation After all other accessories have been checked and found to be operating normally the meter should be checked Description Smith Meter single case rotary meters are of the posi tive displacement type The metering mechanism is a rotor assembly set in the housing Pipe connections are confined to the housing which means the rotor assem bly can be removed by taking off the cover assembly and lifting the rotor assembly out Inspection maintenance and service is greatly simplified The measuring function is accomplished in a chamber of precise volume created by the moving blades rotor housing and cover There is a smooth flow of product through the meter The blades rotate around a fixed cam which causes them to move out to but not touch the body of the meter Four chambers per revolution are formed as the rotor and blades are turned by product flow FMC Technologies Measurement Solutions Inc pro vides a meter variation with tungsten carbide trim to resist the accelerated wear that can be caused by im t 3 4 7 i iue V 001 4 7000 M zm t 7 aa Figure 1 Figure 1A pider Figure 2 Spider and Bushing purities such as sand and iron sulfide and also by the low lubricity of condensates This variation uses solid t
27. ungsten carbide journal rotor and thrust bearings In addition blade bearings size and weight have been reduced to minimize the rotational inertia of the cam followers and the wear resistance of the bearings and cam have been substantially increased Also the rotor and jackshaft gear assemblies have been changed to hardened stainless steel 1 Consists of feeler gauge soldered to 15 rod An extension rod 22 and coupling is available as Part Number 515250 Page 2 e MN01029 Issue Rev 0 5 6 11 Section 1 General Information and Description continued Suggested Tools and Fixtures In addition to ordinary hand tools the following tools and equipment will facilitate work on the meter Feeler gauges leaf type see Table 1 Emery cloth Wood block or equivalent see Figure 1 Table 1 Feeler Gauge Sizes Part No Thickness Part No Thickness 515252 001 0015 515252 011 011 515252 002 002 515252 012 012 515252 003 003 515252 013 013 515252 004 004 515252 014 014 515252 015 015 515252 016 016 515252 017 017 515252 018 018 515252 019 019 515252 020 020 515252 005 005 515252 006 006 515252 007 007 515252 008 008 515252 009 009 515252 010 010 Spiders Figure 2 e Cam Setting Bushing for T 11 and I 75 Meters only 552469 001 Figure 1A Cam Setting Fixture for T 11 and I 75 Meters only 552469 002 Figure 1A Disassembly of Model T
28. ve rotor assembly Figure 5 and clean rotor and housing interior Figure 5 e Lift straight up to prevent damage to the rotor blades e f the meter has been in service on crude oil or any other viscous liquid a solvent should be used to dissolve the residue Do not use water Issue Rev 0 5 6 11 MNO01029 e Page 3 Section 1 General Information and Description continued 4 Turn rotor upside down and place on a wooden block or equivalent The wooden block or metal plate must have a clear ance hole in the center for the rotor shaft and high enough to allow shaft to clear the table Refer to Figure 1 Page 2 for recommended block dimen sions 5 The block Figure 5 can be separated from the hous ing by removing the two block retaining bolts in the side of the housing When replacing the block a sealant must be applied to the two block retaining bolts Master Gasket by Loctite is recommended This will prevent leakage Removing Cam and Adjusting Mechanism 1 With rotor assembly removed unscrew hold down screws and lift cam straight up from housing center hub Figure 6 Figure 6 Note locating pins on center hub Refer to Pages 16 and 17 for information on cam replacement 2 Lift thrust bearing and rotor bearing from hub Figure 7 Figure 7 When replacing the thrust bearing indent side of thrust bearing plates must face outward from retainer and balls Figure 8 Fi
29. w rotate freely If not recheck all clearances 7 Reinstall gasket and access plug in bottom of housing Check gasket for damage Replace if necessary Procedure for Rotor End Adjustment and Application of Loctite The following procedure applies to the ASD 3V NF 1 Figure 37 shows the meter in an assembled state The arrows point to two 5 16 bolts Remove these two 5 16 bolts using a 1 2 wrench When the bolts are removed the meter adapter can be removed Figure 37A allowing access to the rotor adjustment screw Figure 37 Figure 37A 2 Figure 38 illustrates the meter with the adapter re moved The arrow points to the locking mechanism for the rotor end adjustment and the Jack Shaft gear Figure 39 shows the Adjusting Screw with the Adjust ing Cap and Screw removed Figure 39 Page 10 MN01029 Issue Rev 0 5 6 11 Figure 40 5 Section 1 General Information and Description continued Remove the Adjusting Screw Clean and apply LOC TITE 242 Figure 40 indicates where the LOCTITE is to be applied Figure 41 is a photo of the locking mechanism SCREW TOP ADJUSTING CAP MIDDLE NOTE the arrows point to a gasket at the base of the Adjust ing Cap and a brass gasket in the top of the Adjusting Cap These gaskets need to be in place to create a leak proof seal AND ADJUSTING SCREW BOT TOM After the Adjusting Screw has the LOCTITE applied install it into the meter cover Inst
Download Pdf Manuals
Related Search