Remove/install valves - AR05.30-P-3511FH

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ENGINE 276 in MODEL 172, 204, 207, 212, 218

Exemplified

Fig 1: Valves Remove/Install Components - Exemplified

Courtesy of MERCEDES-BENZ USA

Shown on engine 276

Fig 2: Valves Remove/Install Components - Shown On Engine 276

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove cylinder head (1)	Cylinder head on the right, model 207, 212, 218 with engine 276.8	AR01.30-P-5780ELS
		Cylinder head on the right, model 212, 218 with engine 276.9	AR01.30-P-5780EL
		Cylinder head on the right, model 204, 207 with engine 276.9	AR01.30-P-5780FH
		Cylinder head on the right, model 172 with engine 276	AR01.30-P-5780W
		Cylinder head on the left, model 207, 212, 218 with engine 276.8	AR01.30-P-5770ELS
		Cylinder head on the left, model 212, 218 with engine 276.9	AR01.30-P-5770EL
		Cylinder head on the left, model 204, 207 with engine 276.9	AR01.30-P-5770FH
		Cylinder head on the left, model 172 with engine 276	AR01.30-P-5770W
2	Remove valve clearance compensation element	MODEL 212, 218 with ENGINE 276	AR05.00-P-2011EL
		MODEL 204, 207 with ENGINE 276	AR05.00-P-2011FH
		MODEL 172 with ENGINE 276	AR05.00-P-2011W
3	Mount cylinder head (1) onto assembly device (01)	Before putting assembly device (01) into operation, check that counterholders (02) are correctly mounted on cylinder head (1). There is otherwise the danger that the cylinder head (1) will be pressed upwards out of the assembly device (01) and the cylinder head (1) will be damaged with the valves (6) in the combustion chamber. Observe operator's manual of assembly device manufacturer (01).
		Assembly tool	Figure
4	Mount assembly lever (03) with depressor (04) on sliding piece (05)	Position depressor (04) vertically at upper valve spring retainer (2) and align to sliding piece (05).
		Valve assembly tools kit	Figure
		Depressor	Figure
5	Slide air bellows for assembly device (01) with the lever (06)	Ensure that air bellows for assembly device (01) always correctly stands opposite a combustion chamber and is pushed in the middle. The air bellows can be pushed out of the side of the combustion chamber otherwise and this leads to damage to the valves (6). Move air bellows for the assembly device (01) with a lever (06) in such a way that they are matched to the combustion chamber of the respective valves (6).
6	Connect compressed air hose to assembly device (01) and open compressed air valve	The assembly device (01) air bellows presses the valve disks in the combustion chamber.
7	Remove upper valve spring retainer (2) and valve spring (3)	Press together valve spring (3) and Remove valve keepers (4). Before installing the upper valve spring retainers (2) and valve springs (3), replace the valve stem seals (5).
		Magnetic pin Before mounting the upper valve spring retainers (2) and valve springs (3): ↓	Figure
		Replace valve stem seals (5).	AR05.30-P-3500-02MM
		Pliers	Figure
		Drift	Figure
8	Close compressed air valve for assembly device (01)	Then disconnect compressed air hose from assembly device (01).
9	Remove valves (6)	For this purpose, detach the cylinder head (1) from the assembly device (01).
	Check
10	Check upper valve spring retainer (2) and lower valve spring retainer (7)	Check upper valve spring retainers (2) and lower valve spring retainers (7) for score marks, cracks and pitting; replace if necessary.
11	Check valve stems	Check surface of valve stems for roughness and ridging (visual inspection or with nail). Replace valves (6) with a rough stem surface or ridging.
12	Install in the reverse order