jarvis · page 3 of 16 model twc--1, twc--2 and twc--4 jarvis products corporation 33 anderson...

TABLE OFCONTENTS Page. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model TWC--1 with Control Circuit 4019022Model TWC--2 with Control Circuit 4019020Model TWC--4 with Control Circuit 4019029Model TWC--1 4019025. . . . . . . . . . . . . . . . .Model TWC--2 4019021. . . . . . . . . . . . . . . . .Model TWC--4 4019028. . . . . . . . . . . . . . . . .Balancer 4042040. . . . . . . . . . . . . . . . . . . .Control Circuit 3022075. . . . . . . . . . . . . .Air Hose (1/4 inch) 1061455. . . . . . . . . .Air Hose (5/32 inch) 1061449. . . . . . . . . .Cyl. Supply and Return Hose 1059031. .

PRODUCTS CORPORATION33 ANDERSON ROAD, MIDDLETOWN, CONNECTICUT 06457--4926

UNITED STATES OF AMERICA

TEL. 860--347--7271 FAX. 860--347--6978

Model TWC--1 Tail, TWC--2 andTWC--4 Hog Toe Web Cutters

EQUIPMENTSELECTION Ordering No.. . . . . . . . . . . .

• Notice to Employer and SafetyDirector 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

• Notice to Operators, Maintenanceand Cleanup Personnel 3. . . . . . . . . . . . . . . . . . .

• Parts Diagram and List 4. . . . . . . . . . . . . . . . . . . .

• Specifications 10. . . . . . . . . . . . . . . . . . . . . . . . . . .

• Installation Instructions 10. . . . . . . . . . . . . . . . . . .

• Operator Instructions 12. . . . . . . . . . . . . . . . . . . .

• Maintenance Instructions 12. . . . . . . . . . . . . . . . .

Patent Nos. 6,461,232 B16,648,746

TWC--1TWC--2 and TWC--4

JARVIS6223012::::

®

Model TWC--1, TWC--2 and TWC--4 page 2 of 16

JARVISPRODUCTS CORPORATION33 ANDERSON ROAD, MIDDLETOWN, CONNECTICUT 06457--4926


TEL. 860--347--7271 FAX. 860--347--69786223012::::

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notice to employerand safety director

NOTICE TO EMPLOYER AND SAFETY DIRECTORAVOID INJURY

1. Remove and repair any tool that malfunctions. All personnel must be instructed to remove anymalfunctioning equipment.

2. Ensure that all employees who use this tool are trained in the proper use of this tool and are aware ofthe dangers that may arise if they do not follow procedures outlined in this brochure.

3. Enclosed are four (4) copies of “NOTICE TO OPERATORS, MAINTENANCE AND CLEANUPPERSONNEL.” Post one copy on the employees’ bulletin board; give one copy to the operator(s); giveone copy to the maintenance foreman; and give one copy to the sub-contract cleanup / internal cleanupforeman. Additional copies will be provided upon request.

4. The tool is designed and intended to be powerful. This fact should be obvious to your employees, butyou must emphasize it to them.

5. Never make modifications or alterations to the tool. Replace any missing or illegible labels.

6. Ensure that proper procedures are established in accordance with OSHA’s lockout/tagout procedures(29 CFR 1910.147) to prevent accidental startup or release of stored energy.

7. Follow our installation and maintenance instructions for proper installation and care of the tool.

8. Avoid injury. Do not permit the tool to be misused.

9. If you resell or distribute a Jarvis product, you must provide the purchaser with the appropriate safetysheets and tool brochure. Additional copies of safety sheets and tool brochures will be provided uponrequest.

Keep hands clear.

Model TWC--1, TWC--2 and TWC--4page 3 of 16



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notice to operators, maintenanceand cleanup personnel

NOTICE TO OPERATORS, MAINTENANCE AND CLEANUP PERSONNELREMOVE ANY MALFUNCTIONING TOOL FROM SERVICE

REPORT ANY PROBLEMS TO YOUR SUPERVISOR

1. Disconnect the air hose in accordance with OSHA’s lockout/tagout procedures (29 CFR 1910.147) be-fore sharpening blades.

2. Disconnect the air hose in accordance with OSHA’s lockout/tagout procedures (29 CFR 1910.147) be-fore performing any repair or maintenance.

3. Disconnect the air hose - or have the air hose disconnected - in accordancewith OSHA’s lockout/tagoutprocedures (29 CFR 1910.147) before performing any cleanup.

4. Disconnect the air hose when the tool is not being used.

5. Never put fingers, hands or other parts of the body on the cutting edge, in the cutting path or in the pathof the moving links.

6. Test the tool prior to use or daily. Depress each trigger separately and the blades should not close.Depress one trigger, then pauseone secondand depress the other trigger and the blades should not close.Repeat this procedure reversing the triggers. Depress both triggers simultaneously and the bladesshould close. With the blades closed, release one trigger and the blades should open. Continue holdingthe depressed trigger and then depress the other trigger. The blades should not close. Repeat this proce-dure holding the other trigger. If the tool malfunctions, remove it from service and report or repair itimmediately.

7. Never depress the triggers unless you want to use or test the tool.

8. Nevermake modifications or alterations to the tool. Report or replace any missing or illegible labels.

Keep hands clear.




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Figure A

Model TWC--1for Tails

“a”

“b“

1 1018070 Trigger 12 1010286 Dowel Pin 13 1018133 Trigger 14 1055155 Set Screw 15 1055325 Hex Head Screw 3/2/26 1004005 Split Lock Washer 6/4/47 1051083 Connector 3/1/18 1010399 Dowel Pin 19 1050468 Pipe Plug 110 1007183 Lock Nut 111 1024158 Trigger Guard 112 1004113 Washer 113 1010398 Cotter Pin 114 1011302 Yoke, TWC--1 115 1010397 Yoke Pin 116 1032427 Friction Plate 217 1054143 Link Bolt 218 1023354 Blade 219 1004224 Washer 120 1054144 Blade Bolt 121 1036367 Bushing 822 3028053 Link with item 21 223 1007297 Lock Nut 624 3028046 Link Assembly with item 21 125 1054145 Eye Bolt 126 1007021 Hex Jam Nut 127 1055021 Socket Head Cap Screw 228 1050027 Street Elbow 1

ITEM PART NO. PART NAME QTY

ITEM PART NO. PART NAME QTY29 1051054 Connector 430 1051055 Quick Exhaust Valve 131 1050016 Hex Pipe Nipple 132 1050606 Street Elbow 133 1051086 Elbow 234 1061647 Tubing, 5 in (“a”--“b”) 135 1050509 Pipe Plug 136 1016446 Pistol Grip Housing 137 1010274 Threaded Pin 138 1055328 Hex Head Screw 239 1055049 Socket Head Cap Screw 440 1042351 Handle Bracket 141 1019130 Trigger Handle 142 1055283 Hex Head Cap Screw 3/2/243 1024291 Trigger Guard 144 1014092 Spring 245 1035279 O--ring 246 1039050 Plunger with item 45 247 1035309 O--ring 448 1016350 Cartridge Housing w/item 47 2

QTY = TWC--1 / TWC--2 / TWC--4

parts diagram and list




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Figure B

Model TWC--2

“a“

“b“

Qty. = TWC--1 / TWC--2 / TWC--4

ITEM PART NO. PART NAME QTY49 1004049 Split Lock Washer 250 1024161 Blade Guard 151 1029329 Blade Spacer 152 1023557 Upper Blade 153 1028134 Upper Link 154 1011407 Yoke, TWC--2 155 1007003 Hex Nut 256 1027084 Stud 257 1024266 Linkage Guard 158 1024229 Trigger Guard 259 1019204 Dual Hdl. Hsg. with item 67 160 1061812 Plastic Tubing 161 1051258 Reducing Adapter 162 1022328 Quick Exhaust Valve 163 1051259 Reducing Adapter 164 1012025 Cable Clamp 6/7/665 1051117 Muffler 166 1051182 Tee Fitting 1

ITEM PART NO. PART NAME QTY67 1055260 Socket Set Screw 668 1042539 Roller Bracket 169 1023325 Lower Right Blade 170 1023326 Lower Left Blade 171 1055906 Socket Head Cap Screw 272 1055501 Button Head Screw 273 1057097 Roller with item 74 174 1036358 Roller Bushing 1

3022104 Quick Exhaust Kit(items 61--63 and 65)





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ITEM PART NO. PART NAME QTY75 1035481 O--ring 176 1032428 Housing Front Plate 177 1035482 O--ring 278 1036369 Rod Bushing 179 1035647 U--Cup Seal 180 1004472 Washer 181 1055588 Socket Head Cap Screw 382 1013326 Internal Retaining Ring 183 1020384 Piston Shaft, TWC--2 1

1020266 Piston Shaft, TWC--184 1035210 O--ring 185 1035484 U--Cup Seal 286 1065058 Piston 187 1004296 Washer 188 1007240 Lock Nut 189 1017083 Danger Label 190 1016442 Cylinder Sleeve 191 1032429 Housing Rear Plate 192 1020267 Tie Rod 4

3035072 Seal Kit (items 75, 77, 79,84 and 85)

3036011 Rod Bushing Assembly(items 78--80 and 82)

Figure C

ModelsTWC--1 and TWC--2





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Figure D

Model TWC--4

93 1028144 Upper Link 194 1054205 Link Bolt 295 1024316 Linkage Guard 196 1011436 Yoke 197 1055001 Flat Head Socket Screw 298 1032801 Roller Plate 199 1019271 Dual Handle Housing 1100 1036382 Frame Bushing 1101 1010556 Yoke Pin 1102 1055011 Socket Head Cap Screw 2103 1029460 Blade Spacer 1104 1023612 Upper Blade 1105 1057108 Roller with item 106 1106 1036381 Roller Bushing 1107 1073128 Socket Set Screw, Dog Pt. 1

3023203 Blade Set (items 69, 70,102--104)






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Figure E

Model TWC--4

108 1036383 Rod Bushing 1109 1035729 U--Cup Seal 1110 1073129 Button Head Screw 3111 1020428 Piston Shaft 1112 1065086 Piston 1113 1004481 Washer 1114 1007438 Lock Nut 1115 1027097 Stud 4

3035103 Seal Kit (items 77, 85 and 109)






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Figure F

Control Circuit forTWC--1, TWC--2 and TWC--4

3022075

116 1051001 Quick Connect Plug 1117 1034014 Air Filter 1118 1051059 Pipe Nipple 3119 1051066 Connector 1120 1051115 Air Fitting 2121 1061461 Air Manifold 1122 1050216 Hex Plug 2123 3022061 Air Lubricator 1124 1051102 Silencer 2125 1022205 Air Valve 1126 1061649 Plastic Tubing, 12 inch 1127 1061648 Plastic Tubing, 4 inch 1128 1055632 Button Head Cap Screw 2129 1022057 Valve Block 1130 1042525 Control Circuit Bracket 1pg 11 1059031 Air Hose, 80 inch 2pg 11 1061455 Plastic Tubing, 1/4 inch 6.7 ftpg 11 1061449 Plastic Tubing, 5/32 inch 13.8 ft






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SPECIFICATIONS

Model TWC--1, TWC--2 and TWC--4

Operating Pressure 90 psi 6.2 bar

Air Consumption / Cycle 0.108 ft3 3.1 Lat 90 psi or 6.2 bars

Control HandleDual Anti-tie-down Pneumatic

Blade Opening TWC--1 1.75 in 44.5 mm

Blade Width TWC--2 0.3 in 7.6 mm

Blade Width TWC--4 0.43 in 10.9 mm

Overall Length 17.5 in 445 mm

Weight 12.3 lbs 5.6 kg

INSTALLATION INSTRUCTIONS

Refer to Figures A -- E for referenced items. Use Figure1 as a guide for connecting air hoses from the TWC to theair control circuit.

1 Suspend the TWC from a balancer. Jarvis partnumber 4042040 is available.

1.1 The TWC should have sufficient travel to allowthe operator to reach the entire work area.

2 Suspend the air control circuit in a convenientlocation using the supplied bracket (item 130).

3 An air regulator must be installed ahead of the quickconnect plug (item 116), before the air supply inlet tothe air filter (item 117) and lubricator (item 123).

4 Make the necessary air connections.Note: Connect the air hoses to the TWC prior to

connecting the air hoses to the control circuit.Refer to Figure 1.

4.1 The required compressed air supply is 0.108 ft3/ cycle at 90 psi (3.1 L / cycle at 6.2 bar).

4.2 Attach one grey cylinder supply hose (1059031)from the TWC cylinder connector (item 29)located on the rear housing plate (item 91) to thecontrol circuit top connector (item 29).

4.3 Attach the other grey cylinder supply hose(1059031) from the TWC cylinder connector(item 29) located on the quick exhaust valve(item 30 or 62) to the control circuit lowerconnector (item 29).

4.4 Attach the 1/4 inch blue air hose (1061455) fromthe connector (item 7) located on the left side ofpistol grip housing (item 36) on the TWC--1 orfrom the tee fitting (item 66) on the left side ofdual handle housing (item 59 or 99) on theTWC--2 or TWC--4 to the control circuitconnector (item 119).

4.5 Attach one of the 5/32 inch blue air hoses(1061449) from the elbow fitting (item 33 “a”)on the right side of pistol grip housing (item 36)on the TWC--1 or on the right side of dual handlehousing (item 59 or 99) on the TWC--2 orTWC--4 to the control circuit port labeled “a”.

4.6 Attach the other 5/32 inch blue air hose(1061449) from elbow fitting (item 33 “b”) onthe trigger handle (item 41) on the TWC--1 or onthe left side of dual handle housing (item 59 or99) on the TWC--2 or TWC--4 to the controlcircuit port labeled “b”.

specifications andinstallation instructions

installation instructionsModel TWC--1, TWC--2 and TWC--4page 11 of 16



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Figure 1Hose Connection Diagram

AIR FILTER

CONTROL CIRCUITTOP CONNECTOR

CONTROL CIRCUITLOWER CONNECTOR

CONTROLCIRCUITPORTS

CYLINDERFITTING

REARHOUSINGPLATE

LEFT SIDE OFHANDLE HOUSING

QUICK CONNECTPLUG

CYLINDERFITTING

CONTROL CIRCUITAIR FITTING

TEEFITTING

RIGHT SIDE OFHANDLE HOUSING




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OPERATION INSTRUCTIONSIMPORTANT: ALWAYS DISCONNECT ALL AIR HOSES IN

ACCORDANCE WITH OSHA’S LOCKOUT/TAGOUT

PROCEDURES (29 CFR 1910.147) BEFORE INSTALLING OR

REMOVING A BLADE. ALWAYS DISCONNECT ALL AIR

HOSES IN ACCORDANCEWITH OSHA’S LOCKOUT/TAGOUT

PROCEDURES (29 CFR 1910.147) BEFORE PERFORMING

ANY MAINTENANCE OR REPAIRS.

UseFigure 1 as a guide for connecting air hoses from theTWC to the air control circuit.

1 Connect all air hoses to the TWC.

2 Connect all air hoses to the control circuit.

3 Each day, before you begin operation, perform thefollowing:

3.1 Make sure that the TWC moves freely on thebalancer.

3.2 Make sure that the compressed air is at the properpressure.

3.3 The TWC is equipped with dual anti--tie downcontrol handles. Check for the correct operationof the dual anti--tie down control handles prior touse or daily. Depress each trigger separately andthe blades should not close. Depress one trigger,then pause one second and depress the othertrigger and the blades should not close. Repeatthis procedure reversing the triggers. Depressboth triggers simultaneously (within one halfsecond of each other) and the blades shouldclose. With the blades closed, release one triggerand the blades should open. Continue holdingthe depressed trigger and then depress the othertrigger. Theblades should not close. Repeat thisprocedure holding the other trigger. If the toolmalfunctions, remove it from service and notifyyour supervisor immediately.

4 Making the cut:

4.1 Place the TWC in position on the carcass.

4.2 Depress both triggers simultaneously to close theblades.

4.3 Release either or both triggers to open the blades.

MAINTENANCE INSTRUCTIONSIMPORTANT: ALWAYS DISCONNECT ALL AIR HOSES IN

ACCORDANCE WITH OSHA’S LOCKOUT/TAGOUT

PROCEDURES (29 CFR 1910.147) BEFORE INSTALLING OR

REMOVING A BLADE. ALWAYS DISCONNECT ALL AIR

HOSES IN ACCORDANCEWITH OSHA’S LOCKOUT/TAGOUT

PROCEDURES (29 CFR 1910.147) BEFORE PERFORMING

ANY MAINTENANCE OR REPAIRS.

1 DAILY:

1.1 Depress each trigger separately and the bladesshould not close. Depress one trigger, thenpauseone second and depress the other trigger and theblades should not close. Repeat this procedurereversing the triggers. Depress both triggerssimultaneously (within one half second of eachother) and the blades should close. With theblades closed, release one trigger and the bladesshould open. Continue holding the depressedtrigger and then depress the other trigger. Theblades should not close. Repeat this procedureholding the other trigger. If the toolmalfunctions, repair or remove it from serviceimmediately.Note: connect the air line to performtheaboveoperation only.

1.2 Inspect all hoses for leaks, cuts and abrasions andreplace if necessary.

1.3 Check all fittings for leaks and tighten or replaceas necessary.

2 AS NECESSARY:

2.1 Inspect blades (items 18, 52 or 104, 69 and 70)for wear and sharpen or replace as necessary.Refer to Sections 3 and 4 for blade and linkremoval and installation procedures.

2.2 Disassemble, clean and inspect cylinderassembly. Refer to section 5 as a proceduralguide.

operation andmaintenance instructions




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3 BLADE AND LINK REMOVAL:

TWC---1

3.1 Remove link bolts (item 17) and lock nuts (item23).

3.2 Remove blade pivot bolt (item 20), lock nut(item 10) and washer (item 12).

3.3 Remove blades (item 18). Inspect for wear andsharpen or replace if necessary. Refer to Figure2 for proper sharpening angle of blades.

Sharpen Here

Figure 2Blade Sharpening Angle

TWC--1

3.4 Remove cotter pin (item 13).

3.5 Slide links (items 22 and 24) to extend pistonshaft (item 83) and align yoke pin (item 15) withthe holes on the front of pistol grip housing (item36).

3.6 Remove yoke pin (item 15). Use a pin punch todrive yoke pin out through hole in pistol griphousing (item 36).

3.7 Remove links (items 22 and 24) from yoke (item14) and inspect for wear. Replace bushings (item21) if necessary.

TWC---2

3.8 Remove hex nuts (item 55) and linkage guard

(item 57).

3.9 Remove six (6) lock nuts (item 23) and rollerbracket (item 68).

3.10 Remove link bolt (item 17) and lock nut (item23).


3.12 Remove upper blade (item 52) and lower bladeassembly (items 51 and 69--71).

3.13 Remove socket head cap screws (item 71) andblade spacer (item 51).


3.15 Slide upper link (item 53) to extend piston shaft(item 83) and align yoke pin (item 15) with holeson front of dual handle housing (item 59).

3.16 Remove yoke pin (item 15).

3.16.1 Use a pin punch to drive yoke pin outthrough hole in dual handle housing.

3.17 Removeupper link (item53) and roller (item73).Replace roller bushing (item 74) if necessary.

3.18 Inspect blades (items 52, 69 and 70) for wear andsharpen or replace if necessary. Refer to Figure3 for proper sharpening angle of blades.

Sharpen Here

Figure 3Blade Sharpening Angle

TWC--2 and TWC--4

3.19 Inspect all parts forwear and replace if necessary.

TWC---4

3.20 Remove two (2) top hex nuts (item 23) oncylinder studs (item115) and linkage guard (item95).

3.21 Remove two (2) flat head screws (item 97) androller plate (item 98).

3.22 Remove link bolts (item 94) and lock nuts (item23).

maintenance instructions

maintenance instructionsModel TWC--1, TWC--2 and TWC--4 page 14 of 16



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3.24 Remove upper blade (item 104) and lower bladeassembly (items 69, 70, 102 and 103).

3.25 Remove socket head cap screws (item 102) andblade spacer (item 103).


3.27 Slide upper link (item 93) to extend piston shaft(item111) to align yokepin (item101)with holeson front of dual handle housing (item 99).

3.28 Remove yoke pin (item 15).

3.28.1 Use a pin punch to drive yoke pin outthrough hole in dual handle housing.

3.29 Remove upper link (item 93) and roller (item105). Replace roller bushing (item 106) ifnecessary.

3.30 Inspect blades (items 69, 70 and 104) for wearand sharpen or replace if necessary. Refer toFigure 3 for proper sharpening angle of blades.


4 BLADE AND LINK ASSEMBLY:

4.1 Reverse steps and procedures outlined in section3. See notes below.

4.1.1 Make sure curved end of friction plates (item16) are facing toward pistol grip housing(item 36) and away from blades (item 18).TWC--1 only.

4.1.2 Make sure roller (item 73 or 105) is placedinside upper link (item 53 or 93) and then

both roller and link are placed inside yoke(item 54 or 96).

4.1.3 Use a pin punch through one of the holes indual handle housing (item 59 or 99) to alignthe holes in the yoke (item 54 or 96), upperlink (item 53 or 93) and roller (item 73 or105) as you install yoke pin (item 15) inplace. Jarvis tool 8039169 is available. SeeFigure 4.

Figure 4Yoke Pin Alignment Tool

8039169

4.1.4 Make sure blade spacer (item 51 or 103) isplaced between left and right lower blades(items 69 and 70).

4.1.5 All nylock nuts are less effective afterremoval. ApplyLoctite242 to threadsof locknuts (items 10 and 23) when reassembling.

4.1.6 Be sure to install roller bracket (item 68) orroller plate (item 98) and linkage guard (item57 or 95) before using the tool.

5 CYLINDER DISASSEMBLY:

5.1 Remove blade and link assembly. Refer to stepsand procedures outlined in section 3.

5.2 Remove lock nuts (item 10), tie rods (item 92) orstuds (item 115) and housing rear plate (item91).

5.3 Remove cylinder sleeve (item 90).

5.4 Remove lock nut (item 88 or 114) from pistonshaft (item 83 or 111).

5.4.1 Hold the piston shaft steady by placing a 3/8inch wrench on the piston shaft’s flats.

5.5 Remove seals, piston andwasher (items 85-87 or85, 112 and 113).




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5.6 Remove the yoke (item 14, 54 or 96) from thepiston shaft (item 83 or 111).

5.6.1 Use a pin punch through the holes in the yokeand a 3/8 inch wrench on the piston shaft’sflats to remove the yoke.

5.7 Remove piston shaft (item 83 or 111).

5.8 Remove socket head cap screws (item 81) orbutton head cap screws (item 110) from rodbushing (item 78 or 108).

5.9 Remove u-cup seal (item 79 or 109) from rodbushing (item 78 or 108).


6 CYLINDER ASSEMBLY:

6.1 Reverse steps and procedures outlined in section

5. See notes below.

6.1.1 Make sure that flat surface of U-cup seal(item 79 or 109) faces toward rod bushing(item 78 or 108) when installed.

6.1.2 Make sure flat surface of U--cup seals (item85) are facing inward toward piston (item 86or 112).

6.1.3 Make sure, when placing the piston (item 86or 112) on the piston shaft (item 83 or 111),the piston’s deeper cavity faces the handlehousing (items 36, 59 or 99).

6.1.4 Apply Loctite 242 to threads of yoke (item14, 54 or 96) and piston shaft (item83or 111)before reassembling.

6.1.5 Apply Loctite 242 to threads of lock nuts(items 10 and 88) before tightening.

maintenance instructions




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PRODUCTS CORPORATION

PRODUCTS CORPORATION33 ANDERSON ROAD, MIDDLETOWN, CONNECTICUT 06457--4926UNITED STATES OF AMERICA E--MAIL [email protected]. 860--347--7271 • FAX. 860--347--6978 • WWW.jarvisproducts.com

®JARVIS6223012::::

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