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Tru-Line TR-12 Series Operating And Service Manual

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Operating and Service Manual
Laser Wheel Alignment System
TR-12 Series
Race Car Alignment System
8231 Blaine Road
Blaine, WA 98230
360-371-0552
800-496-3777 Toll Free
www.Tru-Line.net
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Summary of Contents for Tru-Line TR-12 Series

  • Page 1 Operating and Service Manual Laser Wheel Alignment System TR-12 Series Race Car Alignment System 8231 Blaine Road Blaine, WA 98230 360-371-0552 800-496-3777 Toll Free www.Tru-Line.net...
  • Page 2 Tru-Line is pleased to have you and your company as a client. We are available to answer any questions that you may have. Please feel free to contact us if there is anything further we can do to make Tru-Line a better product for you and your company.

  • Page 3: How It Works

    HOW IT WORKS The TR-12 Series wheel alignment systems measure Caster, Camber, SAI, and Toe. Two-wheel, Thrust angle (squaring or rear steer), and four-wheel can be done easily, with speed and accuracy. These alignments can also be referenced to the mechanical centerline of the vehicle. Depending on the type of vehicle being aligned, the technician chooses which alignment to do.
  • Page 4 Also because of the many varieties of racecars there are supplemental procedures for the different types of racecars. Please contact Tru-Line for an updated list of supplemental procedures if you do not see a supplemental procedure for your type of racecar.
  • Page 5 4a) For Run-Out using Hub Adapters 1) Mount the Hub Adapters on all four wheels 2) Lift the Vehicle up on the side you are going to perform Run-Out on. 3) Hang a Laser Gun and Combi Gauge on the two wheels in the air. Level and turn the laser Gun on.
  • Page 6 8) Determine the Total Rear Toe of the Vehicle. As described in the Two-Wheel Centerline Alignment Procedure section of this manual which begins on page 26. 9) Determine the Thrust Angle (square ness, or rear steer) of the Vehicle. Make changes as required.

  • Page 8: Calibration Procedures

    CALIBRATION PROCEDURES (Independent Suspension System TR-12) Using the TR-40 Calibration Bar, you are able to calibrate the TR-12 wheel alignment system, which consist of the TR-30 EZ Check Gauge, TR-36 Left Laser Gun, TR-37 Right Laser Gun, TR- 38 right Combi, and TR-39 left Combi. For maximum accuracy, it is important to check and, if necessary, recalibrate the alignment system periodically TR- 37 RIGHT LASER GUN TR- 36...
  • Page 9 Note: It does not matter which portion of the bubble you use, the top, bottom, or middle portion can be used with equal precision. What’s important is that once you have decided on which part of the bubble to use, you are consistent. a) If adjustment is needed, use the camber adjustment knob, which is in the middle of the vertical post of the gauge b) If a higher degree of camber is required than the scale allows you may...
  • Page 10 CAMBER ZERO SET CAMBER SCALE TO E SETTING ADJUSTING KNO B TO E SCALE- INCHES FRONT RETRO REFLECTO R TO E SCALE- DEGREES TR- 39 RIGHT FRONT COMBI FIGURE 6 CAMBER ZERO SET MAN1 CAMBER SCALE TO E SETTING ADJUSTING KNO B TO E SCALE- INCHES FRONT RETRO REFLECTO R TO E SCALE- DEGREES...
  • Page 11 Second: Calibrating the toe settings for TR-36 Left Laser Gun and TR-37 Right Laser Gun. 1) Place the TR-36 and TR-37 on the set of disks furthest from the Fixed Return Mirrors, so the lasers are pointing towards them. Place the Laser Guns on the disks at the slot location located on the bottom of the Laser Guns;...
  • Page 12 BATTERY COMPARTMENT END CAP END CAP GREY ON SCREW S (2) PUSH BUTTON BLACK OFF PUSH BUTTON TOE SETTING KNOB CRO SS TOE LASER KNO B TOE SCALES- INCHES TOE SCALES- DEGREES CROSS TOE CENTERING TARGET CRO SS TO E LASER BEAM LASER BEAM RUN- OUT SCALE m an1...
  • Page 13 Combination Gauge Calibration Note: Be sure that the camber has already been calibrated on each Combi gauge and the Laser Guns have been calibrated with the Fixed Return Mirrors. 1) Place the Combi Gauges on the disks closest to the Fixed Return Mirror (with the mirrors facing the Laser Guns).
  • Page 14 Frame Centering Flag Calibration Calibration of the Frame Centering Flags is done to ensure that we have the most accurate theoretical centerline of the vehicle. 1) Pick the four most outside points of the frame where the Frame Centering Flags are to be mounted on the vehicle.
  • Page 15 2) Place the bar on a firm surface. One side of the bar has a red dot (called the red side). Place the bar with the red side on the left. 3) Hang the TR-30 Easy Check Angle Gauge on the red side disk in the normal way and zero the caster bubble using the caster zero knob.
  • Page 16 CALIBRATION PROCEDURES (Stockcar Style System TR-212) If you own a TR-12 Stockcar System you may have already noticed that your TL-40/212 Calibration Bar looks different from the one previously shown in this manual. You may use the calibration procedure for the TR-30 Easy Check (Caster / Camber) Gauge previously described on pages 8 and 9 of this manual.
  • Page 17 MOUNTING TR-28 WHEEL CLAMPS The wheel clamps can be attached to either the inside or the outside of the rim (whichever is easiest). They can be mounted on a wheel rim 10 inches to 20 inches in diameter, and the aluminum feet are less likely to damage polished aluminum rims.
  • Page 18 M O UN T IN G D IS K BLA C K R UN O U T A D JU S T IN G KN O B (2) R E D R U N O U T A D JU S T IN G KN O B C E N T E R S LID E A S S E M BLY LO C KIN G S C R E W (2) S PR E A D E R KN O B...
  • Page 19 12) Rotate the wheel until the installation knob is at a 12:00 position. Level the TR-30, and adjust the caster knob until the caster bubble reads zero. 13) With the TR-30 held in a level position with one hand (do not grasp or hold tightly), rotate the wheel one full turn while watching the caster bubble.
  • Page 20 ACCOMIDATING LOW BODY CONDITIONS Although the Tru-Line TR series alignment system is designed to align vehicles with rim diameters up to 20”, alignment of vehicles with larger rim and tire diameters is possible. By offsetting the center assembly of the TR-28 Wheel Clamp is to accommodate the laser to reach around the oversize tires or low body conditions as seen in the diagram below.
  • Page 21 MEASURING CAMBER, CASTER, AND SAI Measuring Caster, Camber or SAI is very simple and fast. Before performing these measurements: The equipment must be calibrated. The wheel clamps must be mounted and adjusted for run out. The full weight of the vehicle must be on its wheels It is recommended to use turntables and slip plates when measuring caster, camber and SAI.
  • Page 22 Measuring SAI: When measuring SAI, the Brake Pedal Depressor (TR-31) must be installed, so the wheel does not rotate Note: If the car has power brakes, run the engine while performing this procedure. 1) Hang the TR-30 the left front wheel clamp to measure camber, caster and SAI. 2) Install brake pedal depressor and lock brakes so they do not rotate.
  • Page 23 LIVE CASTER ADJUSTMENT This scale allows you to monitor caster adjustments while making the changes the vehicle. 1) Following the caster adjustment procedure measure caster. 2) Hang the TR-30 on the left front wheel clamp. 3) Install brake pedal depressor and lock brakes so they do not rotate. With power brakes start the engine to install brake pedal depressor.
  • Page 24 MEASURING CASTER, CAMBER AND SAI ON A NON-LEVEL SURFACE When the vehicle is not on a level surface, the procedure is somewhat different. The TR-30 Easy Check Angle Gauge is used in conjunction with the TR-44 Level Compensator Bar to correct the readings.
  • Page 25 2) Hang the gauge on the red side and zero the camber bubble using the camber zero adjust knob (refer to Figure 3). 3) Hang the gauge on the black side and read the camber. 4) Adjust the bubble half way back using the camber zero adjust knob. The camber gauge now reads the tilt on the ground.
  • Page 27 TWO-WHEEL CENTERLINE ALIGNMENT (TR-12) The purpose of a Two-wheel Centerline alignment is to align the front wheels to the theoretical centerline of the vehicle. This is accomplished by adjusting the front wheels to match up with the centerline of the vehicle. Note: the Two-wheel Centerline procedure is the first step of the Thrust Angle and Four-wheel alignments.
  • Page 28 th” Note: when setting the dial, for example, to 1/8”, it equals a total of 1/8” overall toe or 1/16 on each side.
  • Page 29 THRUST ANGLE ALIGNMENT (SQUARE NESS or REAR STEER) (TR-212) The purpose of a Thrust Angle alignment is to adjust the rear of the vehicle to the theoretical centerline of the vehicle. This type of alignment allows you to measure which direction the rear of the vehicle is inclined to travel, or the thrust angle of the vehicle.
  • Page 31 Thrust Angle for the TR-12: After completing the two-wheel centerline procedure on page 27, use these additional steps to complete a thrust angle alignment with the TR-12. 1) Make note of the numbers reading on the laser box face on both sides of the vehicle, I.E. the number 8 on the left side and the number 2 on the right side.
  • Page 32 FOUR-WHEEL ALIGNMENT The objective in a Four-wheel alignment is to adjust all four wheels until they are aligned to a specification. This alignment is typically done to vehicles that have rear wheel adjustment available. The following should be completed before making any measurements or adjustments: Equipment should be checked for calibration The full weight of the vehicle must be on its wheels turntables in the front and slip plates in the rear.
  • Page 33 LASER LASER BEAM 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 STEERING WHEEL LOCKED STRAIGHT AHEAD HOW TOE IS MEASURED Rear COMB I...
  • Page 34 Determining Offset (TR-212) After having completed the alignment as described above many racers like to have their right rear wheel follow the right front wheel. This is called Offset. To determine Offset we have found this very useful. 1) Leaving the TR-37 Laser Gun in place and the toe dialed in. Take the TR-36 Laser Gun and put on the Front Right Wheel Clamp or Hub Adapter and set the toe dial to zero.
  • Page 35 Tru-Line Wheel Alignment Systems are guaranteed to the original owner for a period of two years from the date of purchase. Tru-Line will repair or replace, at its options, for the full two years, those parts returned to the factory and proves to be defective after inspection by Tru-Line.
  • Page 36 Routine factory maintenance and service is not necessary. However, if the system is not functioning properly, the user should not attempt to repair any equipment. A Tru-Line service representative should perform all servicing and repairs at the factory.