AR40.20-A-0200LA | Perform a wheel alignment check | 15.1.10 |
MODEL 8AB390.053 /054 with STEERING 766.422
Danger! | Danger to life from lowering vehicle when working between wheels and body. Risk of injury from being trapped or crushed when working on the air suspension | Do not work between the wheel and wheel arch or in the wheel well. Only carry out check and adjustment operations from underneath the vehicle. Secure areas with moving vehicle parts against unauthorized access. | |
1 | Print out form for wheel alignment check | ||
| Wheel Alignment Form | ||
2 | Enter vehicle data in form for wheel alignment check | Enter the following test values and measurement values in the form for wheel alignment check. | |
3 | Check condition of tires | The condition of the tires can signal problems associated with incorrect front end alignment and suspension problems. | |
4 | Check tire inflation pressure, correct if necessary | ||
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5 | Remove wheels from front axle | ||
6 | Check wheel bearing play of front axle and adjust if necessary | ||
| Front axle 732.240 | ||
| Front axle 732.241 | ||
7 | Install wheels on the front axle | ||
8 | Check condition of steering mechanism, replace defective components if necessary | ||
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9 | Check diagonal control arms and trailing arms of rear axle for play and wear, replace if necessary | ||
10 | Check air spring bellows for damage, replace if necessary | ||
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11 | Check tires for radial runout | If the specified value is exceeded: | |
Turn the tire on the rim and repeat the check. If the specified value continues to be exceeded, check wheel centering and replace the tire or wheel if necessary. | |||
12 | Check rims for lateral runout | If the specified value is exceeded: | |
Replace rim. | |||
13 | Drive vehicle onto measuring station | The chassis alignment must be carried out on a horizontal, level and clean base. A measuring station with workshop pit is advantageous. | |
14 | Drive vehicle with front wheels onto the locked turnplates and unlock turnplates | ||
15 | Install axle measuring device | Install axle measuring equipment as per the manufacturer's operating instructions, align and operate. | |
| Measure | ||
16 | Measure toe-in | If the measurement is not achieved: | |
Adjusting toe-in. | |||
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17 | Measure camber | The camber cannot be adjusted, if necessary check components for damage. | |
18 | Measuring caster | If the measurement is not achieved: | |
Adjust caster. | |||
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19 | Measure steering axis inclination | The steering axis inclination cannot be adjusted, if necessary check components for damage | |
20 | Measure lateral misalignment of front axle and rear axle | If the measurement is not achieved: | |
Check lateral misalignment of axle. | |||
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| Notes on self-locking nuts and bolts | ||
21 | Measure driveline angle | If the measurement is not achieved: | |
Adjust driveline angle | |||
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22 | Check and adjust wheel angle | ||
23 | Lock turnplates and drive vehicle down | ||
24 | Detach axle measuring device | ||
25 | Check/adjust center steering position |
Test values for wheels, tires
Number | Designation | Model | ||
BE40.10-N-1001-01D | Radial runout at tire | 22.5̋ | mm | < 1.5 |
BE40.10-N-1002-01D | Lateral runout of rim for rim dia. | 22.5̋ | mm | < 2,0 |
Check values for front axle camber/caster
Number | Designation | Model | Model | ||
BE40.20-N-1001-06C | Camber | Left | ° | 0° 38'(0,2') | 0° 45' |
Right | ° | 0° 22'(0,2') | 0° 45' | ||
BE40.20-N-1002-06C | Caster | ° | 1°30' | 1° 30'(20') | |
Front axle toe check values
Number | Designation | Model | Model | ||
BE40.20-N-1001-07C | Toe-in (total) | ° | 0° 16' 50'' (05') | 0° 05' 30'' (05') | |
Test values of front axle steering knuckle
Number | Designation | Model | Model | ||
BE40.20-N-1001-15B | Steering axis inclination | Left | ° | 5° 22' | 7° 15'(15') |
Right | ° | 5° 38' | 7° 15'(15') | ||
Test values for front wheel/rear wheel alignment
Number | Designation | Model | ||
BE40.20-N-1001-19B | Permissible lateral misalignment of front and rear axles | between axle and center of frame | mm | 2 |
Rear axle driveline angle
Number | Designation | Model | Model | |
BE40.20-N-1001-21A | Driveline angle (angular alignment) of rear axle | ° | 0° (10') | 0° (10') |
Trailing arms, wishbones
Number | Designation | Front axle 732.241 | Front axle 732.240 | ||
BA33.15-N-1003-01F | Nut, trailing arm clamp | Nm | 60 | 60 | |
BA33.15-N-1006-01F | Nut, clamp for diagonal control arm | Nm | 60 | 60 | |
Control arm
Number | Designation | Rear axle 741.990 | Rear axle 748.785 | ||
BA35.15-N-1002-03E | Bolt, trailing arm bearing to trailing arm carrier | M16 | Nm | 230 | 230 |
M18 | Nm | 335 | 335 | ||
BA35.15-N-1005-03E | Nut, clamp for diagonal control arm | Nm | 60 | 60 | |
Tie rod
Referenced documents
- ah0000n000101a Notes on self-locking nuts and bolts
- ap3220a3255la Leaf springs/air bellows - visual inspection for damage
- ap3320a3351lac Check front axle wheel bearing play
- ap3320a3351lad Check front axle wheel bearing play
- ap4015a4060la Correct tire inflation pressures, including spare tire
- ap4600a4650la Checking condition of steering mechanism
- ar4010a1100la Remove/install wheels
- ar4010t102502a Check tires for radial run-out
- ar4010t102503a Checking rim for lateral runout
- ar4020a010001la Adjust toe-in
- ar4020a010004la Adjusting caster
- ar4020a020014la Adjust driveline angle
- ar4020a037002la Correct lateral misalignment of axle.
- ar4620a0510la Check and adjust wheel angle
- ar4620a3020la Check/adjust center steering position
- as3222z000101a Risk of death from lowering vehicle when working between wheels and body. Risk of injury from pinching or crushing when working on the air suspension.
- of4020t300001a Wheel Alignment Form