Machine valve seat rings - AR05.30-P-4511B

ENGINE 604, 605, 606 / 

Fig 1: Identifying Machine Valve Seat Rings Angle

	Remove/Install
1	Remove valves		AR05.30-P-3511B
2	Inspect valve guide	if necessary, after inspecting: ↓
		Replace valve guide	AR05.30-P-3731A
3	Machine valve seats	Pay attention to operating instructions of machining tool manufacturer. Maintain dimensions as stated in inspection and setting data.	*BE05.30-P-1014-03B
			*WE58.40-Z-1009-21A
4	Inspect valve seat for leaks
5	Measure valve seat width	Correct valve seat width if necessary (angle γ).
6	Insert valve, inspect for leaks		*WH58.30-Z-1012-05A
7	Measure distance from valve stem end to camshaft bearing base or valve setback to cylinder head	Valve stem end to camshaft bearing base. Insert ø 5 mm round material into middle of camshaft bearing base for this step and measure dimension with caliper gage.	*BE01.30-P-1009-02A
		Measure valve setback to cylinder head	AR05.30-P-4100-01A
		If the measurement obtained is less than the minimum dimension, no further correct valve clearance compensation is possible. ↓
		Replace valve seat rings	AR05.30-P-3831A
8	Install in the reverse order

Test data of valve seat rings

Number	Designation			Engine 604, 605, 606
BE05.30-P-1014-03B	Width of valve seat (b)	Intake	mm	1.0...1.5
		Exhaust	mm	0.8...1.5
		Fig. see		AR05.30-P-4511B
BE05.30-P-1015-03B	Valve seat angle (α)	Intake	∠°	45° (-15')
		Exhaust	∠°	45° (-15')
		Fig. see		AR05.30-P-4511B
BE05.30-P-1016-03B	Correction angle (γ)	Intake	∠°	15 (±15')
		Exhaust	∠°	25 (±15')
		Fig. see		AR05.30-P-4511B
BE05.30-P-1017-03B	Concentricity deviation of valve seat	Intake	mm	0, 03
		Exhaust	mm	0, 03

Test values for cylinder head

Number	Designation			Engine 604, 605, 606
BE01.30-P-1008-02A	Distance (a) in the case of new valves and new valve seat rings	Exhaust valve	mm	1.3...1.7
		Inlet valve	mm	1.3...1.7
		Fig. see		AR01.30-P-7162-01A
BE01.30-P-1009-02A	Distance from end of valve stem to base of camshaft bearing (T)		mm	23.7...24.2
		Fig: see		AR01.30-P-7162-01A

Commercially available tools

Number	Designation
WH58.30-Z-1012-05A	Vacuum testing unit

Workshop equipment

WE58.40-Z-1009-21A

Valve seat turning device