Machine valve seat rings - AR05.30-P-4511GZ: Notes

WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2012 Mercedes-Benz GL550, 2012 Mercedes-Benz GL450, 2011 Mercedes-Benz ML63, 2011 Mercedes-Benz ML550, and 2011 Mercedes-Benz ML350. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE 113.964 in MODEL 164.175

Fig 1: Grinding Valve Seat Rings

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove
1	Remove valves		AR05.30-P-3511GZ
	Inspect
2	Inspect valve guides		AR05.30-P-3731-06VT
		Outside diameter of exhaust and intake valve guide	*BE05.30-P-1001-02D
		Bore diameter in cylinder head for exhaust and intake valve guide	*BE05.30-P-1002-02D
		Overlap in cylinder head	*BE05.30-P-1003-02D
		Length	*BE05.30-P-1004-02D
		Dimension	*BE05.30-P-1005-02D
		Feeler gauge Inspect the valve guide if the measurements obtained are not within the stated tolerances ↓	Figure
		Fit a new valve guide	AR05.30-P-3731GZ
	Machining
3	Machine the valve seat ring in the cylinder head using the cranking device	Valve seat turning tool or	*WE58.40-Z-1009-21A
		Valve seat ring turning device Follow the operating instructions provided by the tool manufacturer. Maintain dimensions according to the inspection and machining dimensions, see: ↓	*WE58.40-Z-1010-21A
		Inspection and machining dimensions of valve seats	AR05.30-P-4510-01VT
		Valve seat of intake valve/exhaust valve If the values after machining lie below the test values: ↓	*BE05.30-P-1009-03C
		Replace valve seat ring Installation: Following installation of a new valve seat ring, always replace the valve.	AR05.30-P-3831GZ
	Inspect
4	Measure valve seat width	Correct valve seat width if necessary.	AR05.30-P-4510-01VT
		Valve seat of intake valve/exhaust valve	*BE05.30-P-1009-03C
5	Insert valve and inspect for leaks using the vacuum tester	Grind valve with valve grinding compound before installation.
		Vacuum tester	*WH58.30-Z-1020-13A
6	Measure valve setback to cylinder head	If the measurement falls short of the minimum dimension, the valve seat ring or cylinder head must be replaced to guarantee the correct valve clearance compensation: ↓	AR05.30-P-4100-01AV
		When replacing valve seat rings, pay attention to: Installation: following installation of a new valve seat ring, the valve must be replaced in principle.	AR05.30-P-3831GZ
	Install
7	Install valves		AR05.30-P-3511GZ

TEST AND ADJUSTMENT VALUES FOR VALVE GUIDES

Number	Designation			Engine 112 except 112.951/976, Engines 113.940/941/942/943/944/945/946/948/960/961/962/963/964/965/966/967/968/969/971/980/981/982/984/986/987/988/990/991/992/993/995
BE05.30-P-1001-02D	Outside diameter of exhaust and intake valve guide	Standard series	mm	12.540...12.551
		Standard I series (color: blue)	mm	12.560...12.571
		Repair stage I (color: red)	mm	12.740...12.751
		Repair stage II (color: yellow)	mm	13.140...13.151
BE05.30-P-1002-02D	Bore diameter in cylinder head of exhaust and intake valve guide	Standard series	mm	12.500...12.511
		Standard I series (color: blue)	mm	12.520...12.531
		Repair stage I (color: red)	mm	12.700...12.711
		Repair stage II (color: yellow)	mm	13.100...13.111
BE05.30-P-1003-02D	Overlap in cylinder head		mm	0.029...0.051
BE05.30-P-1004-02D	Length	L	mm	50
BE05.30-P-1005-02D	Dimension	A	mm	14.3 (0.2)

TEST VALUES FOR VALVE SEAT RINGS

Number	Designation				Engines 113.960/961/962/963/964/965/967/968/971/980/981/982/984/987/988/990/991/992/993/995
BE05.30-P-1009-03C	Intake valve/exhaust valve seat		Width	mm	0.80...1.2
			Angle (α)	∠°	45(+ 30')
		Correction	Angle (β)	∠°	35 (± 15')
		Correction	Angle (β)	∠°	58 (± 15')

Fig 2: Identifying Feeler Gauge (102 589 01 23 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

COMMERCIALLY AVAILABLE TOOLS

Number	Designation
WH58.30-Z-1020-13A	Vacuum testing unit

WORKSHOP EQUIPMENT

WE58.40-Z-1009-21A	Valve seat turning device
WE58.40-Z-1010-21A	Valve seat turning device