Measure distance between constant throttle piston and cylinder head · ar0150b1001a · Mercedes-Benz WIS

AR01.50-B-1001A

Measure distance between constant throttle piston and cylinder head

12.02.16

Cumbustion engine 475.979, 476.971 with Vehicle 695.024, 695.034, 695.051, 695.052

B01.50-0006-06

1 Constant throttle valve

2  Valve refacing machine

A Reference line

B Final line of the valve sealing face

C Width of the throttle seat

D Valve head diameter

E Diameter of valve head cylindrical part

F Valve head angle

G Stem diameter

H Total valve length, measured from the reference line “A” to the flat face of the stem end

I Inclination angle on the valve sealing face

J Angle

1	Clean the valve (1), eliminate all engine oil residue.	 Check the possibility of valve reutilization. The stem end must not present damages, the keeper grooves must not be worn and the stem chromium layer must not be damaged.
2	Secure the valve (1) in the valve grinder chuck (2) closest possible to the head.	This will avoid vibration.
3	Set the angle on the valve grinder scale (2).		*BE01.50-B-1007-01A
4	Through the valve grinder feed (2), slowly approach the valve (1) to the grinding wheel.
5	Actuate the feed and grind the seat face until it is perfectly clean in its entire circumference.	After this work step, verify the checking values.
		Valve head diameter (D).	*BE01.50-B-1004-01A
		Valve head cylindrical part diameter (E).	*BE01.50-B-1002-01A
		Eccentricity measured at line “A”.	*BE01.50-B-1005-01A
		Width (C).	*BE01.50-B-1006-01A
		Angle (F).	*BE01.50-B-1009-01A
		Angle (I).	*BE01.50-B-1007-01A
		Stem diameter (G).	*BE01.50-B-1001-01A
		Angle (J).	*BE01.50-B-1008-01A
			*001589532100
			*363589022100
6	Lift the valve (1) off the grinder (2).
7	Grind the valve stem end utilizing the grinder's prismatic support.	Check the length (H) checking values.	*BE01.50-B-1003-01A

Constant throttle

Número	Denominação		Engine 475.9; 476.9


BE01.50-B-1001-01A	Rod diameter (G)	mm	7,995...8,010
BE01.50-B-1002-01A	Valve head diameter (E) (cylindrical part)	mm	16,850...17,150
BE01.50-B-1003-01A	Valve total length (H) measuring from the A reference line up to the rod's end flat face	mm	85,80...86,00
BE01.50-B-1004-01A	Diameter (D)	mm	15,99...16,01
BE01.50-B-1005-01A	Eccentricity measured in the A line	mm	0,03
BE01.50-B-1006-01A	Sealing face width (C) measured from the A line up to the B line (A and B = reference lines)	mm	1,5
BE01.50-B-1007-01A	Slant angle (I) on valve seal face	mm	45° +10
BE01.50-B-1008-01A	Angle (J)	mm	30°
BE01.50-B-1009-01A	Angle (F)	mm	90° +20

001 589 53 21 00

Dial gauge

363 589 02 21 00

Dial gauge holder