Rev. L - Industry Surplus Australia
Contents
1. Ck AEN y cm A ies r J opti manufacturing OPERATION AND SERVICE MANUAL FOR PACIFIC SCIENTIFICO T60 DIRECT READING SERIES CABLE TENSIOMETER PART NUMBERS T60 1001 C8 1A NSN 6635 00 530 1128 T60 1001 C9 1A NSN 6635 00 530 1129 T60 1002 C8 00 BRITISH MODEL FOR CWT CABLES T60 1002 C9 00 BRITISH MODEL FOR CWT CABLES SOP TN 002 T60 Operations and Service Manual Rev L TABLE OF CONTENTS A A A nr lag eal E eevee 2 INTRODUCTION AND DES GRIP TIO IN sp decias 2 El INTRODUCTION ene eee eee en ne aa 2 2 RUBROS Sd 2 Eos DESCRIPTION eae nr ooo 2 t WARRANTS ee nee RR ae ee ee R 2 Table t Type Ad entificati n Table seiiecceie wine etec tl aie sata via eed bts in esate E an Mec bee E nachos 2 Figure 1 Gable Tensiometer Why Ol alacant ooo lla 3 SESMO NE ee ee eee eR mn so ee tr ee ee eee 3 SPECIAL SERVICE TOUS oi 3 2A ORECIAL SERVI GE TOO E Siesta titi Dto irte 3 SEC MON Mi e Soest ald 3 PREPARATION FOR USE STORAGE and SHIPMENT caca A ed oe et a eee 3 Blk UPREPARAMION FOR USE separas d tt DINNER oi Sat rica 3 ae STORAGE serao e o dd 3 ds MIME NT ata 3 A deuce cites aee E E a Ee ESN 4 OPERATION ING TRU CANONS orraa e acid 4 dai GENERA LCINSTRUCTIONS tacit setae A te ae Se eae tee 4 42 OPERATING ING THUCTIONS cacas estat aeee Ea Eaei 4 4 3 MEASURING CABLE DIAMETER Sucursal 4 Figure 2 TOO Cable Diam els caida AA a tenance 4 4 4 TAKING CABLE TENSION READINGS TYPE CB oo2. 19 160014 1 HANDLE ASSY 1 20 T60037 WASHER Spacer 1 21160070 LINER Pin 1 22 160071 LINER Roller 1 23 T60023 YOKE ASSY 1 24 T537 SECTOR 2 25 160052 WASHER 6 26 T60030 ROLLER Guide yoke 1 _27 AN531 4RF6 cos 4 40 X 3 8 thread cutting Phillips head 822 5 28 T60008 PLATE 1 29 T60050 SPRING Trigger 1 30160035 SPRING Switch 1 31 T60048 PIN Switch spring 1 32 160006 SHAFT Switch 1 2 33 MS35207 203 P SCREW Indicator 2 64 x 1 4 long round head hillips Recess UNF 2A SOP TN 002 T60 Operations and Service Manual Rev L 12 FIG amp UNITS USABLE aa PART NUMBER DESCRIPTION PER ON 1234567 ASSY CODE ET AN960 3 WASHER 35 T60059 INDICATOR Dial FACE Dial British Model INDICATOR Dial FACE Dial British Model 36 COML 0908100 03 BALL BEARING 0 093 dia cres FRAME ASSY 37 COML 0913200 02 l PIN Groove type 4 1 16 dia x 5 16 inch long 38 T60025 CAP Handle lock 39 160028 SPRING Handle latch 40 T60024 PLUNGER Handle lock 41 T60021 Frame Assy T60074 not shown BEARING FRAME PIN FRAME TEST BAR ASSY Calibrating TAG TEST BAR MS20470AD2 3 RIVET 1 6 dia x 3 16 inch long 43 T5138 60 CARRYING CASE ASSY 0922100 88 BLACK CASE 15185 51 INSERT CUSHION 15184 01 CUSHION T60 44 WI CU 002 INSTRUCTIONS SHEET Operating WI CU 002 T60047 INSTRUCTIONS SHEET British Model 45 T60039 LABEL
3. ACCURACY Because of the uneven surface of stranded cable slight variations in reading may occur onthe same cable at the same tension This is especially true of 5 32 inch diameter cable and larger To obtain the greatest possible accuracy take three to five readings at slightly different locations on the cable Average these readings to obtain the maximum degree of accuracy SOP TN 002 T60 Operations and Service Manual 6 Rev L Table 2 T60 Accuracy Tolerance RANGE MODEL LBS TENSION ACCURACY NN SS gt T60 C8 10 200 5 o0f indicator or one minor division whichever is greater NT T60 C9 100 450 5 ot indicator or one minor division whichever is greater 4 8 TYPE OF CABLE The cable tensiometer is calibrated for use on standard multiple strand aircraft cable of 7 x 7 or 7 x 19 stranding in sizes of 1 16 3 32 and 7 x 19 stranding for 1 8 through 1 4 inch diameter on cable Do not attempt to use the cable tensiometer on cables of a different construction Cables construction and specification in accordance with MIL DTL 83420 general specification for flexible wire rope for aircraft control cables 4 9 USE OF CALIBRATION BAR A Calibration bar is supplied with each tensiometer This provides an immediate means of checking the accuracy of the instrument while in use The calibration bar has been carefully checked to read the load marked on the identification tab The identification tab also
4. ccccococccccoccnccncoccnnconononnoccncnanonconcononnnrnnnonronrnnnnnos 5 Figure Preset Instructions TYPE C8 iii A n 5 4 5 TAKING TENSION READINGS TYPE CoQ gt 0ooccoccoccccoccononcncconconnconnocnononnonnononnonnnnnnnennnnnnnnnnnnennnnnanennss 6 Figure 3 9 Preset Instructions Type C9 siisscrceessaccsewcrar dei nace E a E EER 6 4 62 DIF FIG UL TEOCATIOIN S gt tacto i 6 A A a aa Ne ea 6 Table 2 T60 ACCUracy Tola srice Aaaa e EEEE AT 7 Aros IMPERIO DE a C A TE A 7 4 9 USE OF CALIBRATION DAR oli cania 7 Figure 4 Calibration Bar irei A AR E N 7 A WO ON EREOAD Sc A A A E E E A E E E sci a 7 SECON Me O E A A 8 PERIODIC INSPECTION MAINTENANCE AND LUBRICATION co occcccccnccnccncoccnccncnnnoconnnconconnononconnononcnanonnnnons 8 Sl a 1 5a 2 cere cee Renee Cee tne ene e ns a a ai 8 A AM A A menor 8 JA A A A A 8 TROUBLESHOOTING 1 e O nda 8 Oe GENERA smart asilos pro Boi 8 G2 SERVIGE TROUBLES AND REMEDIES cities 8 Table Trouble Shono Chata a ds 9 SECTHON o mamebienee te paneaauaniiesdanwank ead gpndecuadetaed aa gusnii ed emaantacuuneseanueesaess 9 CALIBRATION setter 9 Fl EQUIPMENT REQUIRED cierre eiee E da do 9 2 DISASSEMBLY PRIOR TO CALIBRATION Sscucnsgicada A rolas Roi 9 Tor A O A E A A 9 TA GABLE SIZE INDICATORS a ld di SS 10 AA eo ans uataegunlbabtaes uenacuactanause ae 11 GROWPRASSEMBIEY PARTS iS Ta A E E 11 Figure 5 Cable Tensiometer Type C8 and CQ ccccceccccececceceeeeeeeeeneeeeee
5. INSTRUCTIONS 46 T60040 LABEL NAMEPLATE PR RPIRP PE INIP RIP PB IR IOP PIR IP IP RP e PIP RP PIP Re Nd Denotes non subassembly or final component part Denotes subassembly parts REVISION HISTORY Revision Revision 3 16 2007 section Section 1l 4added gt 07 13 07 Section 5 1 amp EA of Figure 8 1 revised Update Figures Table Section 8 Change the number AA till identification to Tables and Figures 8 19 2010 Update Figure 3 Add Figure 3 5 Tables 2 4 Sections 4 3 6 1 and 7 2 table 5 change the Manual title OPTI Manufacturing Corp Road 992 Km 0 3 Luquillo Industrial Park PO Box 559 Luquillo PR 00773 0559 USA Phone 787 889 2285 Fax 787 889 2805 fax Email info optimanufacturing com Copyright OPTI Manufacturing Corp All Rights Reserved For the latest revision of this manual refer to our website http www optima nufa cturing com SOP TN 002 T60 Operations and Service Manual Rev L
6. is the latch mechanism 37 through 40 figure 5 Reassembly is the opposite of disassembly Whenever the instrument has been disassembled it must be recalibrated See Section VII 6 2 SERVICE TROUBLES AND REMEDIES See table 4 A listing of common troubles together with their probable causes and remedies is presented as a trouble shooting chart table 4 SOP TN 002 T60 Operations and Service Manual 8 Rev L Table 4 Trouble Shooting Chart PROBABLE CAUSE Tensiometer reads high Faulty dial indicator 35 Replace dial indicator and IA IN Er Replace trigger spring and Dirt and foreign matter Clean and reassemble Tensiometer reads low between frame 41 and sectors 24 Worn rea sectors 24 or riser Replace sectors and riser block Faulty dial indicator 35 Replace dial indicator and a e Pointer lock will not Switch spring 30 broken Replace switch spring function calibrate Handle latch will not Handle latch spring 39 weak Replace latch spring Do not lock handle in close or broken calibrate position SECTION VII CALIBRATION 7 1 EQUIPMENT REQUIRED Calibrating the cable tensiometer it will be necessary to have aircraft cables of various sizes and a method of accurately loading these cables with a range of loads from 10 to 450 pounds 7 2 DISASSEMBLY PRIOR TO CALIBRATION See figure 5 Disassemble the instrument following the order of the index numbers starting with index number 1 down through and includin
7. 1 8 cable on Type C9 to improve indicator accuracy to 5 percent If closest possible accuracy is desired take three to five reading at slightly different locations on the cable and average them On step j for 1 16 amp 1 8 cable on Type C8 the low end is 10 lbs and the desired indicator read between 9 11 Do not remove the 0 010 inch shims from the top of the frame pins After this the unit shall make linearity for all cables and tension ranges Replace cover 2 and secure with screws 1 Drop spring 10 onto shaft 13 and secure with screw 9 Preset the indicator dial to the smallest cable size Measure the load required to deflect the calibration bar Remove the load marked on the identification tab and mark the new value indicated on the tensiometer CABLE SIZE INDICATOR To re establish the accuracy of the cable size indicator proceed as follows Remove existing mark on center pin washer 17 with a fine file With handle in locked position rotate cable size indicator 16 counterclockwise until it contacts stop on handle assembly 19 See figure 2 for reference Clamp cable tensiometer on a cable of known diameter Return handle to lock position NOTE In next step do not move the cable size indicator 16 SOP TN 002 T60 Operations and Service Manual 10 Rev L e Mark center pin washer 17 with a scribe opposite known diameter increment on cable size indicator SECTION VIII GROUP ASSEMBLY PAR
8. E WHEN READING TENSION LOADS LESS THAN 125 POUNDS BOTTOM LEFT CORNER POUND TENSION 80 50 60 70 Figure 3 Preset Instructions Type C8 Note Shown figure is for reference purpose actual dial may vary NOTE An examination of the dial will indicate that for the larger size cables there are two rows preset squares One row is identified by 125 the other row is identified by 125 When measuring tensions below 125 pounds use the minus square when measuring tensions in excess of 125 pounds use the plus square See Figure 3b b Release the handle latch by squeezing the actuating handle Retain the actuating handle unlatched against the side of the tensiometer Place the instrument on the cable making certain that the cable is squarely aligned in the jaws and against the jaw base Slowly release SOP TN 002 T60 Operations and Service Manual 5 Rev L 4 5 4 6 the actuating handle allowing the sectors to slide up and grip the cable Remove all restraint from the actuating handle c With the tensiometer clamped on the cable the tension is read directly by the pointer position on the dial face d To remove the tensiometer compress the actuating handle firmly against the side of the tensiometer and latch the handle in position with the handle latch TAKING TENSION READINGS TYPE C9 The Type C9 cable tensiometer is used in the Same manner as the Type C8 with the following exception the larger size cables h
9. GENERAL No periodic inspection maintenance or lubrication is required for cable tensiometers As a matter of general practice the instrument should be kept clean at all times Particular attention should be paid to the two sectors and the riser block to see that they are always free from foreign matter The instrument as shipped by the manufacturer has been lubricated In the event that repairs are made as outlined in Section VI lubrication should be accomplished as listed in table 3 Method of application is a light wipe Explanation D C 33 Dow Corning Grease 33 fluid type or equivalent to NATO G 395 fluid type per MIL PRF 81322 Table 3 Lubrication Chart FIG 4 INDEX NO LUBRICAT ION LOCATION D C 33 Both sides 23 D C 33 On OD of pins and flat face D C 33 ID and OD o 23 CHB OD pp 032 CHB OD 2 038 gt CHB TOD o 40 DC R3 J0D SECTION VI TROUBLE SHOOT ING 6 1 GENERAL The instrument will be free from trouble such as would be caused by nominal use The instrument however can be damaged by mistreatment and improper usage If a detail part of the instrument becomes damaged or broken disassemble the instrument in the order of the index numbers indicated on the exploded view figure 5 All detail parts of the instrument are so integrated that in order to perform a disassembly operation it is necessary that disassembly be started with index number 1 and continued in numerical sequence The only exception to this
10. TS LIST Figure 5 Cable Tensiometer Type C8 and C9 SOP TN 002 T60 Operations and Service Manual 11 Rev L Table 5 Part List FIG amp UNITS USABLE INDEX PART NUMBER DESCRIPTION PER ON NO 1234567 ASSY CODE 5 T60 1001 C8 1A TENSIOMETER ASSY Cable REF A T60 1001 C9 1A TENSIOMETER ASSY Cable REF B T60 1002 C8 00 TENSIOMETER ASSY Cable British Model REF C T60 1002 C9 00 TENSIOMETER ASSY Cable British Model REF D 1 COML 0901100 55 SCREW 4 40 x Y inch long Phillips oval head 2 2 T60012 COVER Head 1 3 T5033 3 SHIM Clip 0 003 inch thick A R T5033 5 SHIM Clip 0 005 inch thick A R T5033 10 SHIM Clip 0 010 inch thick A R 4 T5018 CLIP 2 5 T5013 BLOCK Riser 1 6 T5020 CLIP Mainspring 2 T5019 1 MAINSPRING 1 A C T5019 3 MAINSPRING 1 B C 8 T5034 WASHER 2 9 T60032 SCREW Spring adjusting 1 10 1541 SPRING Follower riser 1 11 COML 0901100 48 SCREW 4 40 x 3 16 Inch long hexagonal gt socket head cup point black oxide 12 160031 POST Shaft 1 13160026 SHAFT Indicator 1 14 COML 0901100 99 SCREW 10 32 x 5 16 inch long socket head 1 15 T60018 PIN Center 1 16160022 INDICATOR Cable size 1 A B 160058 INDICATOR Cable size British Model 1 C D 17 T60019 WASHER Center pin 1 18 160068 WASHER Spacer 2
11. WARRANTY The T60 cable tensiometer has a warranty to the original customer for a period of 1 one year on new units and 6 six months for repaired units from the invoice date This warranty is to ensure the cable tensiometer is free of defects in materials and workmanship under correct and normal use The warranty can be void if the unit has been tampered altered dropped or damaged by an accident All returns must have a Return Material Authorization RMA number In order to obtain a RMA please contact our Quality Department via email jorge optimanufacturing com or via fax 787 889 2805 Table 1 Type Identification Table wr parrnumeeR cames nance TYPE PART NUMBER CABLES AO ee OA PO O AT CCOO 35 CWT 45 CWT 80 to 200 Ibs tension Type C9 T60 1001 C9 1A 1 8 5 32 3 16 100 to 450 Ibs tension n 10 cwt 15 cwt 25 cwt i T60 1002 C9 00 35 cwt 45 Cwt 100 to 450 Ibs tension LEFT DOWN TOP UP RIGHT CALIBRATION BAR BOTTOM RISER CABLE GAGE POINTER LOCK BUTTON JAW BASE a DIAL FACE CABLE GAGE STOP PIN ACTUATING HANDLE POINTER UNLOCK UTTON PRESET ACTUATING HANDLE LATCH RING Figure 1 Cable Tensiometer Typical SECTION Il SPECIAL SERVICE TOOLS 2 1 SPECIAL SERVICE TOOLS No special tools are required for service or maintenance of the cable tensiometer SECTION lll PREPARATION FOR USE STORAGE and SHIPMENT 3 1 PREPARATION FOR USE The cable tensiometer i
12. ave two rows of preset squares one row identified by 250 the other row identified by 250 When measuring cable tensions below 250 pounds use corresponding squares in the row indicated by 250 and conversely for the opposite condition use 250 See Fig 3 5 SET POINTER DIRECTLY SET POINTER HERE WHEN 7 OVER CENTER OF READING TENSION LOADS SQUARE CORRESPONDING IN EXESS OF 250 POUNDS TO THE CABLE DIAMETER UPPER LEFT CORNER ra SET POINTER HERE WHEN READING TENSION LOADS LESS THAN 250 POUNDS BOTTOM LEFT CORNER PACIFIC CABLE TENSIOMETER POUNDS TENSION e Figure 3 5 Preset Instructions Type C9 Note Shown figure is for reference purpose actual dial may vary DIFFICULT LOCATIONS When taking readings among closely grouped cables or in awkward or blind locations let the actuating handle remain open with the instrument clamped on the cable While in this position press the pointer lock button down Remove the tensiometer by compressing the actuating handle against the case and remove The dial indicator pointer will be locked in a position directly over the tension reading obtained on the cable To release this reading press up on the pointer unlock button NOTE Do not attempt to take cable tension readings with the pointer lock button pressed down If the pointer lock button is depressed during a tension reading a false reading will result due to the friction of the brake mechanism 4 7
13. carries the serial number of the instrument for which that particular calibration bar is provided To check calibration proceed as follows a Preset the indicator dial to the smallest cable size listed b Grasp the calibration bar identification tab in the left hand c Place the bar in the instrument with the identification tab facing the user and the right end of the bar flush with the edge of the instrument See Figure 4 Figure 4 Calibration Bar Instruction TOP UP RIGHT S A CALIBRATION BAR ANS FLUSH TO THIS ge S SURFACE LEFT DOWN BOTTOM CABLE GAGE TAB Pe POINTER LOCK BUTTON SECTORS f ae DIAL FACE CABLE GAGE STOP PIN e ACTUATING HANDLE e POINTER UNLOCK pe BUTTON HANDLE LATCH ac d Slowly release the actuating handle allowing the jaws to grip the calibration bar Note the reading on the dial indicator The reading obtained in this manner should correspond with the reading marked on the identification tab within 2 percent of the value marked The tensiometer s serial number shall be marked on the bar CAUTION THE TEST BAR SHALL BE PLACED FLUSH AGAINST THE RISER FACES SUCH THAT THE FACES OF THE RISERS ARE PARALLEL WITH THE TEST BAR 4 10 OVERLOAD The cable tensiometer cannot be damaged by use on cables loaded in excess of the amount indicated by the dial on the tensiometer SOP TN 002 T60 Operations and Service Manual 7 Rev L SECTION V PERIODIC INSPECTION MAINTENANCE AND LUBRICATION 5 1
14. e remembered that the actual cable tension will vary from the nominal depending on the errors in the instrument itself manufacturing tolerance of springs in the regulators rate of the regulator spring and condition of the control cable Cable tension readings taken on a regulated control system therefore can be misleading and can result in damage through improper rigging 4 2 OPERATING INSTRUCTIONS Either the right or left hand may be used to operate this instrument The handle latch retains the actuating handle The latch is automatically released when the actuating handle is squeezed To re latch the actuating handle the handle must be squeezed firmly against the side of the tensiometer and the handle latch pushed up from the bottom against its spring load and held in the extended position while the actuating handle is slowly released against the handle latch The latch end will be retained in the detent socket provided in the actuating handle NOTE When operating the instrument handle the handle should never be allowed to snap open it should be released gradually allowing the unit to clamp firmly on the cable 4 3 MEASURING CABLE DIAMETERS Figure 2 T60 Cable Diameters INDICATOR CABLE SIZE A ee O Ny N J CABLE SIZE GAGE _ STOP PIN 7 eg HANDLE HANDLE _ F AY LATCH SOP TN 002 T60 Operations and Service Manual 4 Rev L a With
15. eck for a symmetrical bite On a pre loaded 7 32 cable start to take a tension reading but do not remove all restraint from handle With the tensiometer in this position wiggle the cable with free hand to determine that the resistance to movement is the same at both sectors 24 Add shims 3 as necessary to balance bite Add shims to obtain lower readings and remove shims to obtain higher readings Use shims that are 0 003 or 0 005 inch thick and place them on the bottom of the pins After the bite is balanced place equal shim thickness on each side of the instrument for subsequent calibration Proceed with calibration by preloading the 7 32 cable with a load equal to the high end of the instrument range The high end is 200 lbs for the type C8 and 450 Ibs for the type C9 Measure the tension and add or remove shim 3 as necessary to make indicator read between 190 195 lbs for Type C8 and between 430 440 Ibs for the Type C9 Remember the addition of Shims 3 makes lower readings On the other hand the remove of shims 3 makes higher readings Try to set as close as possible to 200 Ibs for type C8 and 450 lbs for type C9 Proceed to verify calibration by preloading the 7 32 cable with a load equal to the low end of the instrument Measure tension and add or remove shims 3 aS necessary to make indicator read between 75 80 lbs for Type C8 and between 142 150 Ibs for the type C9 Repeat steps i and j for 1 16 cable on Type C8 and
16. g index number 10 7 3 CALIBRATION Calibrate the instrument as follows a Move shaft post 12 up and down and check for free movement and that the pointer returns to the same position on the dial indicator each time b If binding or erratic indication occurs disassemble the instrument further to ascertain the cause c Check for free movement of sectors 24 There shall be 0 015 inch maximum clearance between sectors 24 and frame 41 This is controlled by number of washers 25 placed under the sectors 24 d Place a washer 8 on each top pin of frame 42 Position mainspring 7 and secure with clips 6 e Check that shaft post 12 just or almost contacts mainspring 7 and that mainspring does not deflect shaft post and consequently pointer of dial indicator 35 If necessary adjust position of shaft post 12 on indicator shaft 13 by loosening setscrews 11 to obtain this condition Be careful not to get a false position This can occur if indicator shaft 13 is not bottomed in dial indicator 35 SOP TN 002 T60 Operations and Service Manual 9 Rev L 7 4 Position risers block 5 The riser block should not deflect the mainspring 7 If it does select a riser block with a low tolerance Place clips 4 on the lower pins of frame 41 Between the pins and the top of the clip place a 0 010 inch shim 3 on each side of the instrument Drop spring 10 onto shaft 13 and secure with screw 9 Ch
17. s shipped by the manufacturer in its own carrying Case and is ready for use Each time the cable tensiometer is used it shall be removed from the case and the serial number stamped on the nameplate checked against the serial number on the tab of the calibration bar 3 2 STORAGE When the cable tensiometer is not in use it must be placed in its carrying case There are no special instructions or precautions relative to storage 3 3 SHIPMENT If the cable tensiometer is to be shipped it shall be placed in its carrying case and packed in such a manner as to avoid damage by common carrier SOP TN 002 T60 Operations and Service Manual 3 Rev L SECTION IV OPERATION INSTRUCTIONS 4 1 GENERAL INSTRUCTIONS Each time the instrument is removed from its case for use check the serial number on the nameplate to ascertain that it agrees with the serial number on the calibration bar Before using the instrument check the calibration by means of the calibration bar See paragraph 4 9 WARNING Cable tensiometers should not be used for adjusting the rig load in a cable system where an automatic cable tension regulator is installed All such cable systems should be rigged by adjusting them so that the pointer on the cable tension regulator scale indicates the correct number based on the surrounding temperature as indicated on the chart provided by the aircraft Maintenance Manual The tensiometer may be used to check the tension so obtained but it must b
18. seeaeseeeeeeeseeeeeeeeneseeaeseeaeseegeaes 11 able Ratt WLS cos RA A AR A AAA EE 12 SOP TN 002 T60 Operations and Service Manual Rev L 1 1 1 2 1 3 SOP TN 002 T60 Operations and Service Manual Rev L SECTION INTRODUCTION AND DESCRIPTION INTRODUCTION This publication is issued as the basic Manual of Operation and Service Instructions for Types C8 and C9 Cable Tensiometers manufactured by OPTI Manufacturing Corp Luquillo Puerto Rico The equipments covered are listed in table 1 Instructions contained in this publication apply to both types listed unless specifically noted otherwise PURPOSE The cable tensiometer are designed to measure cable tension in an aircraft control system while the cables are in a rigged condition DESCRIPTION See figure 1 The cable tensiometer is a hand held instrument A jaw is located at the top of instrument Actual contact on the cable is made by the riser block and the two sectors located in the jaw A sliding yoke slides up the frame of the instrument to provide a measuring force A dial indicator is located at the bottom of the instrument to give the actual tension indication An actuating handle is pivoted at the center of the instrument and is motivated by a trigger spring within the body of the tensiometer A pointer lock button is situated just above the dial indicator and a handle latch is located on the left side of the frame to engage the detent notch of the actuating handle
19. the actuating handle in the latched position move the cable size gage to the left against the cable stop pin See Figure Za b Release handle latch by squeezing the actuating handle Retain the actuating handle unlatched against the side of the tensiometer Place the instrument on the cable making certain that the cable is squarely aligned in the jaws and resting on the sectors and riser block Care should be taken that the cable is resting flat against the jaw base Slowly release the actuating handle allowing the sectors to slide up and grip the cable Remove all restraint from the actuating handle See figure 2b c Remove tensiometer from the cable by returning the actuating handle to the latched position The black line opposite the position on the cable size gage indicates the cable diameter See figure 2c WARNING When re latching actuating handle verify that the latch is positioned in the detent socket before releasing the handle If this is not done the handle will be allowed to snap open with possible personal injury 4 4 TAKING CABLE TENSION READINGS TYPE C8 a Preset dial by rotating the knurled rim of the dial indicator until the pointer is directly over the white square corres ponding to the cable diameter See Figure 3a m SET POINTER DIRECTLY Bree CL OE SET POINTER HERE WHEN gt READING TENSION LOADS ARUARE OS IN EXESS OF 125 POUNDS TO THE CABLE DIAMETER i UPPER LEFT CORNER __ SET POINTER HER
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