Measuring steering knuckle (removed) - AR40.30-P-0451C

MODEL 171 

Shows steering knuckle, right 

Fig 1: Measuring Steering Knuckle - Shows Steering Knuckle, Right

Courtesy of MERCEDES-BENZ USA

	Measure
1	Place steering knuckle with installed wheel hub or brake disc on parallel supports
2	Measure and note height dimension (A) as a comparative measurement with a height marking device	Measure on the flat surface of the brake caliper mounting.
-	-	-	-
3	Scan and note height dimensions (B1, B2, B3) at the lowest point of the respective bore	The test values are calculated from the difference between height dimension (A) and the height dimensions: B1 = Supporting joint mounting B2 = Bearing of upper transverse control arm B3 = Bearing of steering knuckle arm/tie rod	BE40.30-P-1001-01A

Test values for steering knuckle

Number	Designation			Model 171
BE40.30-P-1001-01A	Difference in height measurement	"A" - "B1"	mm	5.1 (± 1)
		"B2" - "A"	mm	62.2 (± 1)
		"B3" - "A"	mm	22.5 (± 1)
		-		-

Commercially available tools

Number	Designation
WH58.30-Z-1015-12A	Parallel bases
WH58.30-Z-1016-12A	Height marking device