background image

23 

 

Measuring Caster, Camber and SAI/KPI 

on a Non-Level Surface 

When the vehicle is not on a level surface, the procedure is somewhat different. The 

TLT-30 Easy Check Angle Gauge is used in conjunction with the TLT-44 Level 

Compensator Bar to correct the readings. If the technician follows the procedure, 

readings with full accuracy will be obtained. Even though the measurements are accurate, 

the ground should be reasonably near level to assure that the vehicle suspension is not 

affected. 

 

When the calibration procedure is complete, measurement of camber is done as follows: 

 

1.

 

Mount TLT-28 Wheel Clamps on front wheels (both sides). 

 

2.

 

Raise wheel and adjust run-out using the standard procedure (both sides). 

 

3.

 

Lower wheel onto turn table and remove locking pin (both sides). 

 

To Measure Camber on a Non-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 Figure 20. 

 

2.

 

Beginning on the left side, hang TL-30 Easy Check Angle Gauge on the mounting 

disk on the left side of the Level Compensator Bar and adjust camber zero knob to 

zero the camber bubble. 

 

3.

 

Measure camber on the same left of the vehicle. 

 

4.

 

Repeat steps 2 and 3 on the right side. 

 

NOTE: Remember to zero the camber gauge each time before you measure camber. 

 

 

To Measure the Side to Side Tilt for SAI/KPI 

SAI/KPI readings are affected by the side to side tilt of the vehicle. The following 

procedure compensates for the tilt to give full accuracy SAI/KPI readings. You can make 

the SAI/KPI readings first, or after this procedure. 

 

1.

 

Place the bar in front of the wheels as shown in Figure 13 with the red side on 

the right side. 

 

2.

 

Hang the gauge on the red side and zero the camber bubble using the camber zero 

adjust knob (refer to Figure 3) 

Содержание TLT Series

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 31: ...31 Tracking...

Страница 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...

Страница 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...

Отзывы:

Похожие инструкции для TLT Series