® Pit Tire Changer For servicing NASCAR type tire/wheel assemblies (with and without liners) See Operating Instructions on page 3. Operating Instructions with Parts Identification READ these instructions before placing unit in service KEEP these and other materials delivered with the unit in a binder near the machine for ease of reference by supervisors and operators. 1601 J. P. Hennessy Drive, LaVergne, TN USA 37086-3565 615/641-7533 800/688-6359 HENNESSY INDUSTRIES INC.
Table of Contents Safety Instructions . . . . . . . . . . . . . . . . . . . . .iii Parts Identification . . . . . . . . . . . . . . . . .13 - 23 Owner’s Responsibility . . . . . . . . . . . . . . . . . . . . . .iii Operator Protective Equipment . . . . . . . . . . . . . . . .iii Definitions of Hazard Levels . . . . . . . . . . . . . . . . . .iii Safety Notices and Decals . . . . . . . . . . . . . . . . . . .iv Remember R.I.M. . . . . . . . . . . . . . . . . . . . . . . . . . .iv Chassis Assembly . . . .
Safety Instructions Owner’s Responsibility To maintain machine and user safety, the responsibility of the owner is to read and follow these instructions: • Definitions of Hazard Levels Identify the hazard levels used in this manual with the following definitions and signal words: DANGER Watch for this symbol: Follow all installation instructions.
Safety Notices and Decals Remember R.I.M. WARNING Failure to follow danger, warning, and caution instructions may lead to serious personal injury or death to operator or bystander or damage to property. Do not operate this machine until you read and understand all the dangers, warnings and cautions in this manual. For additional copies of either, or further information, contact: Hennessy Industries, Inc. 1601 J.P. Hennessy Drive LaVergne, TN 37086-3565 (615) 641-7533 or (800) 688-6359 www.ammcoats.
Principal Operating Parts ✓ Do It Now! Now is a good time to fill out the Owner’s Registry Card. Know Your Unit Compare this illustration with the unit before placing it into service. Maximum performance and safety will be obtained only when all persons using the unit are fully trained in its parts and operation. Each user should learn the function and location, of all controls. Prevent accidents and injuries by ensuring the unit is properly installed, operated and maintained.
Operating Instructions Demounting a NASCAR Type Tire with Liner using a COATS PIT Tire Changer Following are the steps: 4. Place duckhead on the rim’s top edge as shown. 1. Begin the demounting process by placing the top Power Roller at the edge of the rim and lock or pin the movement. 5. Next, place the Robo Arm opposite duckhead and press tire sidewall down even with rim’s drop center. 2.
8. Rotate lift bar over slowly to position tire bead on top of duckhead. 11. Rotate the lift bar over duckhead to lift the liner’s top bead on to duckhead. Remove the liner’s top bead completely. 9. Move Robo Arm up and away from the tire and rotate the wheel. Dismount top tire bead completely. 12. Begin lower bead removal by positioning lower powered roller near tire/rim intersection; place pin in bar or lock to hold position. 10.
17. Rotate the wheel and remove both tire and liner lower beads. 14. Position the robo arm opposite the duckhead, fix the robo head under the tire and liner sidewalls and lift up as shown. Optional lower bead removal if plastic protector has been removed. 15. Lubricate the tire and liner’s lower bead. 18. After the lower beads have been loosened, position the robo arm over the roller and pull UP on the tire and liner. 16. Insert the lift bar over the duckhead and under the tire and liner’s lower bead.
Mounting a NASCAR Type Tire with a Liner using the COATS PIT Tire Changer Following are the steps: 3. Position the tire/liner over rim and place duckhead at the rim’s top edge; next position bottom bead of tire onto duckhead; do not include lower liner bead. 1. Mount inspected wheel on faceplate and engage lug pins. Next thread centering nut on shaft. If the plastic protector is to be used, this would be the time to install it with the small notch over the wheel’s inflation valves. 4.
9. Rotate rim and mount top bead, use care and observe that the bead is flowing into the rim’s drop center. Mount top bead complete and return the roller to stowed position and return Robo to stowed position. 6. Next, maneuver the top sidewall of liner using the bar as aid and press upper liner bead down over the leading part of duckhead. Rotate wheel forward to mount top liner bead. 7. Follow the bead lock around with bar until top liner bead has been mounted. 8.
Inflation Tire inflation is performed in three steps: BEAD SEAL, BEAD SEAT, and INFLATION. These steps are explained in detail on page 14. Read the explanation of each step and understand them thoroughly before proceeding. POS 1 POS 2 Bleed Pressure From Tire DANGER Tire failure under pressure is hazardous. This tire changer Will Not Restrain Exploding Tires, rims or other related equipment. Inspect tire and wheel carefully for match, wear, damage, or defects before mounting.
Mismatched Tires and Wheels Never attempt to mount and inflate mis-matched tires and wheels. DANGER Mismatched tire and wheel combinations can explode, causing personal injury or death to operator and/or bystanders. 15° Even Size Tires 14.0,15.0,16.0,17.0, etc. Note 15° bead seat Bead may seal; but it will not seat properly Half Size Wheels 14.5, 15.5, 16.5, 17.5, etc. Half Size Tires 14.5, 15.5, 16.5, 17.5, etc. Even Size Wheels 14.0, 15.0, 16.0, 17.0, etc.
Stages of Inflation Review these descriptions and diagrams carefully. Refer to them as necessary during bead sealing, bead seating, and inflation to verify that you are proceeding properly and safely. Bead Sealing Bead sealing is the process of capturing air pressure between the tire and the rim. The tire will usually contain about 1/2 to 2 PSI at initial bead seal Requires rubber lubricant on both upper and lower beads.
Bead Sealing 1. Position valve stem in front of operator and connect the inflation hose with the clip-on chuck. Be sure tire’s top bead does not cover the bottom of the valve stem 2. Depress inflation pedal to position 2 and hold about five seconds to begin air flow through tire valve. 3. Release the inflation pedal and allow it to return to position 1. Verify that beads are completely sealed to the wheel. Repeat these steps if beads have not sealed.
4. Release air pressure from tire by raising up on the inflation pedal (inflation hose must be attached to the valve stem. Never add or adjust tire pressure using an air hose without a clip-on air chuck and in-line valve. Do not use a hand-held style chuck (figure 1). 5. Important: When inflating tires that require more than 60 PSI, always use a safety cage and air hose with a clip-on air chuck and in-line valve.
Oil Flow Adjuster Knob Replace any damaged or missing safety decals. They are available from COATS, (800) 688-6359. Important: These instructions will help you service the unit. Instructions are for a person with some mechanical ability and training. No attempt has been made to describe all basic steps. For example, how to loosen or tighten fasteners.
C H A S S IS A S S E M B LY Parts Identification Chassis Assembly 10 11 9 8 7 6 5 4 3 2 1 Ref Part No.
Foot Pedal Assembly 29 25 24 TORQUE TO 4 - 8 ft./lb. 23 20 21 27 19 1 30 2 17 18 14 36 4 3 32 34 16 5 15 6 33 7 8 9 10 1211 35 31 13 Ref Part No.
Table Top Assembly 12 11 Ref 1 2 3 4 5 6 7 8 9 10 11 12 Part No. 85000489 85000490 8182979 85000664 85000665 85000662 8110514 85000661 8143169 85000692 85000645 8120321 Description Table Top Hub 1/2-13 x 3/4" Stud Special Shaft Washer 40mm Stub Shaft 5/8-11 x 6" SHCS Small Pressure Drum Retainer Spring Hub Nut Handle 1/4-20 Whz Lk Hex Nut Tube & Bar/Handle w/c NASCAR Locator Ring 1/4-20 NC x 1-1/4 HHCS 10 9 8 7 6 5 4 3 2 1 Important: Always read and follow the operating instructions.
Shaft Housing Assembly 1 Ref Part No. 1 904425 2 8106303 3 8110653 4 8185546 5 85000287 6 8301032 7 8106303 8 85000762 9 8120325 10 8184674 11 8185485 12 8182178 13 85000486 Description Hex Cap Screw 3/8-16 UNC Nut 3/8-16 x 6" Screw Transmission Assembly 2 HP Motor 3/8" Flat Washer 3/8-16 UNC Nut 4L3100 V Belt 5/16 x 1.00 Serrated Motor Pulley Motor Bracket Whiz Lock Nut Housing Support Assembly 13 2 3 TORQUE TO 20-25 ft. / lb.
Horizontal Slide Assembly 9 10 11 12 13 22 14 15 23 16 17 18 24 19 26 2 3 25 4 1 5 6 8 APPLY GREASE TO THESE LOCATIONS Ref Part No. 1 ** 2 8185555 3 8185558 4 8185575 5 920861 6 8185544 8 8185550 9 8120424 10 85000408 11 8184837 12 8301122 13 8185614 14 8185562 15 906101 Description Cylinder Assembly Flange Bushing 1/2" Shoulder Screw Shaft Assembly 20 x 47 x 14 Bearing 4" Nylon Roller 0.5100-78 Retaining Ext.
Pressure & Inflation Bracket System 21 17 15 16 TORQUE TO 240 ft./lb. 11 12 13 22 23 18 19 45 24 14 46 10 25 26 39 27 38 28 9 29 30 37 8 31 36 44 35 34 47 7 32 33 6 5 42 4 3 2 1 40 41 48 43 49 18 • Important: Always read and follow the operating instructions.
Ref 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 Part No.
Robo Arm Assembly 11 10 12 13 14 9 15 8 17 18 7 6 19 16 5 20 21 4 3 2 TORQUE TO 240 ft. / lb. APPLY GREASE TO THESE LOCATIONS 1 Ref Part No. 1 8183703 2 8100994 3 8183641 4 905563 5 8301017 6 8183637 7 7000230 8 8181983 9 *** 10 8183644 11 8181997 12 8181996 13 8182016 14 8100994 15 85000640 20 • Description Hex Head Cap Screw Flat Washer Foot Roll Pin Steel Ball Retaining Ring Handle Grip 10-24 x 0.
Auxiliary Arm Assembly 16 12 13 14 17 15 11 8 9 7 18 6 5 19 10 4 3 2 1 Ref Part No. 1 8113583 2 85000644 3 8184426 4 8183033 5 85000513 6 8102278 7 85000542 8 8143168 9 8104149 10 8104154 Description 3/8-16 x 1-3/4 Flat Hd Soc Cap Scr Duckhead Spacer Mount/Demount Head Washer/Spacer Mount/Demount Arm Cotter Pin Spring Plunger Assembly Whiz Lock Screw Valve Spring 5/8 x 4-1/2" Clevis Pin Ref Part No.
Cylinder Assembly Ref 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 Part No.
Valve Assemblies 1 1 2 3 2 4 3 5 ROBO ARM ASSEMBLY VALVE HOR. SLIDE ASSEMBLY VALVE Ref 1 2 3 Part No. 906960 8185621 8000378 Description 1/4 NPT Bronze Muffler 3-Position Valve Straight Fitting Ref 1 2 3 4 5 Part No. 8181997 8109481 8185585 8105615 8000378 Description Fitting 1/4-1/8 NPT Reducer Fitting 3-Position Valve 1/4 NPT Muffler Straight Fitting 1 2 3 4 5 * PEDAL ASSEMBLY VALVE (ELEC.) Ref Part No.
Wiring Diagram 85000681 00 10/07 © Copyright 2007 Hennessy Industries and COATS All Rights Reserved Printed in USA
