Measuring and adjusting wheel lock - AR40.20-P-0345AC

MODEL 460, 461, 463 

Fig 1: Identifying Stop Screw And Axle Stop

Courtesy of MERCEDES-BENZ USA

	Measuring, adjusting
	Risk of injury  caused by moving parts that can pinch, crush  or, in extreme cases, even sever  extremities	No parts of the body or limbs should be within the operating range of the mechanism when moving components.	AS00.00-Z-0009-01A
1	Perform wheel alignment check		AR40.20-P-0200AC
2	Turn the steering to full left lock	The maximum steering angle must always be measured relative to the inner wheel. The measurement must not be performed when the engine is running, as otherwise the hydraulic limiter will prevent the mechanical limit stop from being reached.
3	Measure actual value for the maximum steering angle of the left front wheel	Read off the actual value for the maximum steering angle on the scale of the turnplate or on the display of the electronic measuring system. With standard tires the actual value may only deviate from the specified value within the tolerance. If the maximum steering angle has to be re-adjusted:↓ Undo the locknut, turn the stop screw (5) in or out to match the required adjustment and tighten the locknut again. Grease the stop screw (5) lightly.
		Steering angle	*BE40.20-P-1001-11B
		Long-life grease	*BR00.45-Z-1001-06A
4	Check the clearance between the left front tire and the trailing arm	There must be a distance of approx. 2 cm between the left front tire and the trailing arm. Irrespective of the specified value the maximum steering angle must be corrected if necessary, in particular for tires which do not correspond to standard tires.
5	Turn the steering to full right lock
6	Measuring the actual value for the maximum steering angle of the right front wheel	Procedure as for the left side.
		Steering angle	*BE40.20-P-1001-11B
7	Checking the clearance between the right front tire and the trailing arm	Procedure as for the left side.
8	Check hydraulic limiter of steering gear and adjust if necessary	The hydraulic limiter must engage shortly before the mechanical front axle stop, as otherwise impermissibly high forces will act on the steering mechanism. For each change in maximum wheel angle, e.g. when fitting larger-sized tires, the hydraulic limiter of the steering gear has to be re-adjusted.
		MODEL 460, 461, 463 with STEERING 765.5 Model 460, 461 with steering 760.2	AR46.25-P-3090F

TEST VALUES FOR STEERING ANGLE

Number	Designation			Model 460, 461, 463 with track width 1425 mm and tires 7.00 R16, 7.50 R16, 235/85 R16	Model 460, 461 with track width 1475 mm and tires 235/75 R17, 5
BE40.20-P-1001-11B	Steering angle	Specified value	∠°	33°	33°
		permissible tolerance	∠°	±30'	±30'

TEST VALUES FOR STEERING ANGLE

Number	Designation			Model 460, 461, 463 with track width 1425 mm and tires 225/75 R16	Model 461 with track width 1555 mm and tires 265/75 R16, 8.25 R16
BE40.20-P-1001-11B	Steering angle	Specified value	∠°	35;°	35°
		permissible tolerance	∠°	±30'	±30'

TEST VALUES FOR STEERING ANGLE

Number	Designation			Model 460, 461, 463 with track width 1425 mm and tires 205 R16	Model 461, 463 with track width 1475 mm and tires 225/75 R16, 235/85 R16
BE40.20-P-1001-11B	Steering angle	Specified value	∠°	35° 30'	35° 30'
		permissible tolerance	∠°	±30'	±30'

TEST VALUES FOR STEERING ANGLE

Number	Designation			Model 460, 461, 463 with track width 1475 mm (rim 7x15 ET 38) and tires 255/75 R16	Model 463 with track width 1475 mm and tires 255/65 R16, 265/70 R16, 265/60 R18, 275/55 R19
BE40.20-P-1001-11B	Steering angle	Specified value	∠°	35° 30'	35° 30'
		permissible tolerance	∠°	±30'	±30'

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1001-06A	Long-life grease	A 000 989 63 51 11