ar4020p0331rt

Checking rear axle camber

Type ar · topic 40.20 · version 0102 · 2010-04-27

Applies to: MODEL 251

Where it sits

Function group 2 Chassis › 40 Wheels, chassis alignment check › 40.20 Chassis measurement — Series 251

EinPAS 20 Chassis › 20.10 Wheel alignment › 20.10.20 Diagnosis/testing/measurement/adjusting — Series 251

AR40.20-P-0331RT

Checking rear axle camber

22.4.10

MODEL 251

Checking rear axle camber

P40.20-2234-07

Shown on model 251 with panoramic glass roof with top sliding roof, code 413

1 Camber strut

2 Cam bolt

	Notes on self-locking nuts and bolts	All models	AH00.00-N-0001-01A
	Measure
1	Measure vehicle level at the front and rear axle		AR40.20-P-0301RT
2	Carrying initial measurement of wheel alignment		AR40.20-P-0200RT
	Checking
3	Read specified value for camber from the specified value table and compare with the result of the wheel alignment	Camber at vehicle level	*BE40.20-P-1001-09Z
		Permissible rear axle camber between right and left vehicle side	*BE40.20-P-1002-09Z
		 The following causes may exist in the event of larger deviations:  Too large a difference in vehicle level between the left and right side of the vehicle,  Deformation of camber struts e.g. from damage due to an accident,  Deformation of rear axle carrier or of chassis parts e.g. from damage due to an accident,  Deformation of the body, e.g. due to accident damage.
		 Check for impermissible deformation on the body. See: 
		Check accident vehicles and vehicles possibly damaged in an accident.	AR40.30-P-0400RT
	Adjust camber
4	Loosen nut of cam bolt (2) of camber strut (1) on the left side of the vehicle, adjust left rear wheel camber via the cam bolt (2), tighten nut	 Only if the left rear wheel camber angle has to be adjusted.
		 Replace cam bolt (2), when bolt length greater than 65 millimeters and threaded connection has been undone.
			*BA35.20-P-1001-02G
5	Loosen nut of cam bolt (2) of camber strut (1) on the right side of the vehicle, adjust right rear wheel camber via the cam bolt (2), tighten nut	 Only if the right rear wheel camber angle has to be adjusted.
		 Replace cam bolt (2), when bolt length greater than 65 millimeters and threaded connection has been undone.
			*BA35.20-P-1001-02G
	Measure
6	Carrying final measurement of wheel alignment	 Only if the camber was adjusted.	AR40.20-P-0200RT

Test values for rear axle camber

Number	Designation			Model 251


BE40.20-P-1001-09Z	Camber at vehicle level	-1.00°	°	+0° 17'(30')
		-2.00°	°	-0° 03' (30')
		-3.00°	°	-0° 22' (30')
		-4.00°	°	-0° 44' (30')
		-5.00°	°	-1° 60' (30')
BE40.20-P-1002-09Z	Permissible rear axle camber between right and left vehicle side		°	30'

 Camber strut

Number	Designation			Model 251


BA35.20-P-1001-02G	Self-locking nut, camber strut to rear axle carrier.		Nm	93

Referenced documents

ah0000n000101a Notes on self-locking nuts and bolts
ar4020p0200rt Perform chassis alignment
ar4020p0301rt Check vehicle level at front and rear axle with electronic inclinometer, adjust if necessary
ar4030p0400rt Checking accident vehicles and vehicles possibly damaged in an accident