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19 

 

Accommodating Oversize Truck Tires 

Although the Tru-Line TLT series alignment system is designed to align vehicles with 

rim diameters up to 25”, alignment of vehicles with larger rim and tire diameters is 

possible. By offsetting the center assembly of the TLT-28 Wheel Clamp is to 

accommodate the laser to reach around the oversize tire as seen in the diagram below. 

The run-out will still need to performed in the same fashion spelled out in the run-out 

procedure section. Caster, Camber, and SAI/KPI are all performed in same fashion in the 

according sections. 

 

 

 

 

 

 

 

One Size Wheel Configuration 

 

Figure 18 

Summary of Contents for TLT Series

Page 1: ...1 Operation and Service Manual Laser Wheel Alignment System TLT 12 Truck Trailer and RV Alignment System 8231 Blaine Rd Blaine WA 98230 360 371 0552 Phone 800 496 3777 Toll Free www Tru Line net...

Page 2: ...ccommodating Oversize Truck Tires 19 Measuring Camber 20 Measuring Caster 20 Measuring Caster with the TLT 56 Digital Level 22 Measuring SAI KPI 21 Measuring Caster Camber and SAI KPI on a Non Level S...

Page 3: ...alignment No dedicated rack or level surface is required Alignment of vehicles can be easily done almost anywhere and the type of vehicle range from Tractors Trailers Busses R V s and other types of...

Page 4: ...Reading the Targets 1 The toe scale is used to dial desired toe specifications into both Laser Boxes Toe can be measured in millimeters inches or degrees The toe scale is located on the top of each La...

Page 5: ...libration Bar Fig 1 Locate the bar which looks like a black bar with three disks on one end Then locate the legs for this bar They look like a T Assemble the bar with the provided screws in the bottom...

Page 6: ...Target kit Fig 3 or the Wheel Chock Target Stands Fig 4 The targets have plastic thumbscrews for easy mounting and dismounting Please note that when assembling these Targets they must be mounted exac...

Page 7: ...TLT 41 calibration bar 2 Use adjustment knob just above the pivot plate to center the bubble inside the cross section of the vial This must be done with the gauge on thedisc 3 Check the camber scale o...

Page 8: ...e the TLT 56 Digital Level on a flat surface 2 Wait ten 10 seconds 3 Push and hold the CALIBRATE button for 2seconds 1 will appear briefly on the display 4 Rotate the TLT 56 Digital Level end for end...

Page 9: ...both Laser Guns TLT 36 37 on the discs of the TLT 41 Calibration Bar and secure them by gently pressing down on the laser gun There should be a slight snap when the plunger locks into place on the dis...

Page 10: ...Figure 20 shows the bar placed under the front wheels of the vehicle to be measured Since the bar rests near the front wheels it is tilted the same amount as the vehicle The compensation procedure tha...

Page 11: ...ster bubble using the caster zero knob Fig 9 Figure 9 3 Reverse the bar on the ground so that the foot nearest the red side is now the black side Place the gauge on the black side which is now on the...

Page 12: ...e with the bar returned to the original position red side on the left Once the bar is calibrated it should not require recalibration Even so it is wise to periodically verify the calibration Caster Bu...

Page 13: ...djust run out using the TLT 30 EZ Checkgauge a Raise the vehicle so the wheels can rotate freely b Place the TLT 30 on the disk located on the TLT 28 wheel clamp c Using the TLT 30 gauge and with the...

Page 14: ...e SAI KPI scale on the top of the TLT 30 and lock the gauge in place swing in 20 degrees and note thereading d Record each reading for comparison with desired specifications e Repeat process on the ri...

Page 15: ...plate assembly is usually centered for a large diameter tire you can loosen the locking screws and move the slide plate to the edge of wheel clamp then tighten the locking screws This will assure that...

Page 16: ...sk extending from the wheel clamp 2 Level the TLT 30 using the SAI scale on the top of the post Make surethe TLT 30 can move easily so that it stays relatively level when the wheel clamp is rotated 3...

Page 17: ...current reading using the RED knob on the TLT 28 When making this adjustment it is important not to move the bubble with the caster adjustment knob 7 Rotate the wheel turn to the right so the clamping...

Page 18: ...ng the two BLACK knobs on the wheel clamp 12 Rotate the wheel until the clamping knob is at a 12 00 o clock position Fig 17 Level the TLT 30 and adjust the caster knob until the caster bubble reads ze...

Page 19: ...ters is possible By offsetting the center assembly of the TLT 28 Wheel Clamp is to accommodate the laser to reach around the oversize tire as seen in the diagram below The run out will still need to p...

Page 20: ...amber must be made before measuring toe Measuring Caster Caster readings are taken on the front wheels using the TLT 30 a set of Turn Tables 1 Hang the TLT 30 on the left front wheel clamp to measure...

Page 21: ...swing 5 Rotate the gauge left until the SAI KPI scale on the left side is zeroed Note that there is a right and a left zero position of the scale both of which are on the bottom half of the SAI KPI sc...

Page 22: ...next to the u bolt assembly Making sure that all of the TLT 56 Digital Level s flat surface is touching the axle In some cases this might require the technician to crawl underneath the truck to acces...

Page 23: ...n Level Surface 1 Place TLT 44 Level Compensator Bar that has been assembled to match the tread width and is calibrated in front of wheels as shown in Figure20 2 Beginning on the left side hang TL 30...

Page 24: ...lt of the vehicle The following procedure compensates for the tilt to give full accuracy caster readings You can measure caster first by following this procedure 1 Place the bar along the side of the...

Page 25: ...able to confirm swing 5 Level the TLT 30 using the SAI scale on the top of the TLT 30 adjust the caster bubble to zero using the knob on the body of theTLT 30 6 Turn the wheel in a total of 40 degrees...

Page 26: ...g down on the laser gun until a small click is heard or felt Level and lock the guns so they are pointed at the Centering Targets Zero the toe dials and turn them on 3 Adjust the cross toe laser beam...

Page 27: ...a 2 on the right scale and 6 on the left scale then further adjustment is required In this case add the numbers together 2 6 8 and then divide the total in half 8 2 4 to get your target number 4 c Sin...

Page 28: ...28 Two Wheel Centerline Alignment Figure 22...

Page 29: ...n and complete the additional procedures to complete Tracking 1 Place the TLT 28 wheel clamps on the rear tire and complete the runout procedure 2 Place the TLT 36 and TLT 37 Laser guns on the rear of...

Page 30: ...ointing towards the rear of the vehicle The number one 1 on the scale should be touching the wheel rim 5 Place the TLT 51 Calibration Laser on the other wheel clamp disc Turn it on and point it at the...

Page 31: ...31 Tracking...

Page 32: ...t its options for the full two years those parts returned to the desired and proves to be defective after inspection by Tru Line This warranty does not cover damage caused by improper use abuse misuse...

Page 33: ...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 re...

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