Replace valve stem seals with cylinder head installed · ar0530w3512ba · Mercedes-Benz WIS

AR05.30-W-3512BA

Replace valve stem seals with cylinder head installed

31.8.10

ENGINES 906.9 in MODEL 374, 970, 972, 974, 975, 976

ENGINES 906.9 in MODEL 374, 950, 952, 953, 954

ENGINES 906.9 in MODEL 957 except CODE (MS8) Natural gas engine

Replace valve stem seals with cylinder head installed

W05.30-1055-06

1 Rocker arm assembly

2 Retaining clip

3 valve locks

4 Valve spring retainer

5 Valve springs

6 Valve stem seals

7 Valve guide

Modification notes

30.8.10

"Use assembly sleeve (15) with part number
A000 053 02 54" added.

Step 15

AR05.30-W-3512-01B

	Removing
1	Remove cylinder head cover		AR01.20-W-5014A
2	Remove charge air manifold		AR09.41-W-8681C
3	Remove soundproofing from frame on the left and right
4	Attach cranking device to timing case		AR03.30-W-1600-03A
			*BA01.60-N-1002-01A
			*904589046300
5	Crank engine with turning device until piston for cylinder 1 to be inspected is positioned precisely at ignition TDC	 Observe ignition sequence.
	Firing order		AH01.00-N-0100-01AA
6	Remove rocker arm assembly (1)	Up to engine end no. 041955	AR05.00-W-5521A
		As of engine end no. 041956	AR05.00-W-5521C
7	Remove all retaining clips (2)
	Replace
8	Remove valve springs (5) for cylinder 1 and cylinder 6, replace valve stem seals (6) and fit valve springs (5)		AR05.30-W-3512-01B
			*210589004000
			*541589006100
			*606589003700
	Exhaust valve spring, exhaust valve and exhaust valve seat ring modified		BT05.30-N-0004-01RH
9	Position piston for cylinder 2 and of parallel cylinder 5 precisely at TDC		AR05.30-W-3512-02B
			*541589006100
			*904589046300
10	Remove valve springs (5) for cylinder 2 and cylinder 5, replace valve stem seals (6) and fit valve springs (5)		AR05.30-W-3512-01B
			*210589004000
			*541589006100
			*606589003700
	Exhaust valve spring, exhaust valve and exhaust valve seat ring modified		BT05.30-N-0004-01RH
11	Position piston of cylinder 3 and of parallel cylinder 4 precisely at TDC		AR05.30-W-3512-02B
			*541589006100
12	Remove valve springs (5) for cylinder 3 and cylinder 4, replace valve stem seals (6) and fit valve springs (5)		AR05.30-W-3512-01B
			*210589004000
			*541589006100
			*606589003700
	Exhaust valve spring, exhaust valve and exhaust valve seat ring modified		BT05.30-N-0004-01RH
	Install
13	Fit all retaining clips (2)		*BA07.15-N-1003-01A
14	Install rocker arm assembly (1)	 Do not fit cylinder head cover as yet.
		Up to engine end no. 041955	AR05.00-W-5521A
		As of engine end no. 041956	AR05.00-W-5521C
15	Set valve clearance	 Crank engine with turning device.
	Check and adjust valve clearance	Model 374.5, 950, 952, 953, 954, 957, 970, 972, 974, 975, 976	AP05.30-W-0560B
		Model 374.4  No maintenance instructions have been created for this model.
16	Install charge air manifold		AR09.41-W-8681C
17	Install cylinder head cover		AR01.20-W-5014A
18	Install soundproofing at frame on left and right
19	Detach end cover of TDC inspection hole and fit cranking device to timing case		AR03.30-W-1600-03A
			*BA01.60-N-1002-01A

 Timing case

Number	Designation		Engines 900.9, 902.9, 904.9, 906.9


BA01.60-N-1002-01A	Inspection hole closure cover to timing case	Nm	25

 Diesel injection system with unit pumps (MR/PLD)

Number	Designation			Engine 904.9, Engine 906.9 without code MS8


BA07.15-N-1003-01A	Bolt connecting retaining clip of nozzle holder combination to cylinder head	Hexagon socket	Nm	30
		Twelve-point with radius seat	Nm	35

541 589 00 61 00

Pliers

Valve tool kit

Magnetic pin

Cranking device

210 589 00 40 00

606 589 00 37 00

904 589 04 63 00

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