Adjust Camber And Caster At The Front Axle - AR40.20-P-0263RQ

Model 190, 197

MODIFICATION NOTES

13.07.2020	Nut/screw, lower transverse control arm to integral carrier	Model 190	BA33.20-P-1004-01P
04.08.2020	Check if the front axle has been adjusted to the basic setting using the adjusting plate "8" between the upper transverse control arm and the wheel carrier.	Operation step 2.

Camber

Courtesy of MERCEDES-BENZ USA

Run-on

Courtesy of MERCEDES-BENZ USA

Topical note	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
	Notes on repair work on suspension components		AH00.00-P-0100-01A
	Adjust
1	Check vehicle level at front axle.		AR40.20-P-0302RQ
	Check
2	Check if the front axle has been adjusted to the basic setting using the adjusting plate "8" between the upper transverse control arm and the wheel carrier.	Model 190 with code M032 (Black Series version)
		If the basic setting is not correctly set, ↓ Install adjusting plate "8".	AR33.20-P-0500RG
3	Check caster and assign tabular value.	Model 190	AR40.20-P-0203RQ
		Model 197	AR40.20-P-0322-03RQ
4	Replace screw (19a), washers (19b), adjusting shim (19c) and nut (19d).		AR40.20-P-0263-01RQ
		Assign suspension data. Model 190	AR40.20-P-0203RQ
		Fit nut (19d) of screw (19a) up to contact surface, but do not yet tighten. So that the elastomer bearing of the lower control arm (17 can turn while the vehicle's suspension is being compressed.
		Use adjusting shims (19c) using previously-determined values.
		If the position of the bolt (19a) changes, this can change the camber. An adjustment of the front lower control arm towards the vehicle center (arrow a) causes a positive camber change (St+). Adjustment of the front lower transverse control arm towards the outside of the vehicle (arrow b) causes a negative camber change (St-).
		The caster can be changed by using different adjusting shims (19c). Adjustment of the lower transverse control arm towards the rear (arrow c) causes a negative caster change (NL-). Adjustment of the lower transverse control arm towards the front (arrow d) causes a positive caster change (NL+).
		Model 197 as of 9/1/12 except code P98 (Black Series) Model 197 up to 8/31/12 except code P98 (Black Series) Model 197 with code P98 (Black Series)	*BE40.20-P-1001-20F
		Caster values, form
		Model 197 as of 9/1/12 except code P98 (Black Series) Model 197 up to 8/31/12 except code P98 (Black Series) Model 197 with code P98 (Black Series)	*BE40.20-P-1002-20F
		Permissible difference in caster between right and left side of vehicle
		Model 197 as of 9/1/12 except code P98 (Black Series) Model 197 up to 8/31/12 except code P98 (Black Series) Model 197 with code P98 (Black Series)	*BE40.20-P-1003-20F
		Absolute caster tolerance
		Model 197 as of 9/1/12 except code P98 (Black Series) Model 197 up to 8/31/12 except code P98 (Black Series) Model 197 with code P98 (Black Series) Camber at vehicle level	*BE40.20-P-1001-13R
		Model 197 as of 9/1/12 except code P98 (Black Series) Model 197 up to 8/31/12 except code P98 (Black Series) Model 197 with code P98 (Black Series)	*BE40.20-P-1002-13R
		Permissible difference in front axle camber between right and left side of vehicle
5	Check vehicle level again at front axle after adjusting the camber and caster.		AR40.20-P-0302RQ
		The vehicle level must correspond to the quoted specified values.
6	Tighten nut (19d) of screw (19a).	Tighten nut (19d) of screw (19a) in ready-to-.drive condition only. Otherwise, the elastomer bearing may be damaged.
		Nut/screw, lower transverse control arm to integral carrier	*BA33.20-P-1004-01P

CHECK VALUES FOR FRONT AXLE CAMBER

Number	Designation			Model 197 up to 8/31/12 except code P98 (Black Series)	Model 197 as of 9/1/12 except code P98 (Black Series)
BE40.20-P-1001-13R	Camber at vehicle level	-3.83°	∠°	-	-
BE40.20-P-1001-13R	Camber at vehicle level	-2.87°	∠°	-1° 43' (±10')	-1° 43' (±10')

CHECK VALUES FOR FRONT AXLE CAMBER

Number	Designation			Model 197 with code P98 (Black Series)
BE40.20-P-1001-13R	Camber at vehicle level	-3.83°	∠°	-2° 3' (±10')
BE40.20-P-1001-13R	Camber at vehicle level	-2.87°	∠°	-