11 00 ... General information on valve timing work: (M42)
Attention must be paid to the following if work had been carried out on the cylinder head, for which the camshaft was removed
The bucket tappets expand without loading from the camshaft and require some time following installation to compress again. For this reason, fast assembly could cause "closed" valves to still be open and have contact with the pistons.
The following waiting times are necessary between installing of the camshaft and mounting the cylinder head.
| Room temperature (20° C) | 4 min. |
|---|---|
| 10°C ... 20°C | 11 min. |
| 0°C ... 10°C | 30 min. |
ROOM TEMPERATURE SPECIFICATION
Working on valve train with mounted cylinder head
Turn engine approx. 45° opposite the engine direction of rotation on the central bolt.
In this way none of the pistons will be in TDC.
Install camshaft in such a way that peaks of cams for cylinder No. 1 point to each other. Keep to the above mentioned waiting times. Turn engine from the 45° before the TDC setting in the direction of rotation to the TDC setting and mount the timing chain.
A description of disassembling and repairing engine are provided in chronological sequence on the following pages. The list of contents is provided to help take up work again after an interruption or to more easily find a certain point. They only describe direct removal and installation, and do not contain full details of procedures.
Engine identification
Drive in engine numbers at marked surface with impact tool.
M47 / M47TU / M47T2
Scheme 66
M57 / M57TU / M57T2
Scheme 67
M67 / M67TU
Scheme 68
N47 / N47S
Scheme 69
M52 / M52TU
Scheme 70
M54
Scheme 71
M56
Scheme 72
N40 / N45 / N45T / N43
Scheme 73
N42 / N46 / N46T
Scheme 74
N51 / N52 / N52K / N53 / N54
Scheme 75
N62
Scheme 76
N73
Scheme 77
S54
Scheme 78
S85 / S65
Scheme 79
W10 / W11
Scheme 80
W17
Scheme 81
Assemble engine.
Attention must be paid to the following if work had been carried out on the cylinder head, for which the camshaft was removed
The bucket tappets expand without loading from the camshaft and require some time following installation to compress again. For this reason, fast assembly could cause "closed" valves to still be open and have contact with the pistons.
The following waiting times are necessary between installing of the camshaft and mounting the cylinder head.
| Room temperature (20°C) | 4 min. |
|---|---|
| 10°C ... 20°C | 11 min. |
| 0°C ... 10°C | 30 min. |
ROOM TEMPERATURE SPECIFICATION
Working on valve train with mounted cylinder head
Turn engine approx. 45° opposite the engine direction of rotation on the central bolt.
In this way none of the pistons will be in TDC.
Install camshaft in such a way that peaks of cams for cylinder No. 1 point to each other. Keep to the above mentioned waiting times. Turn engine from the 45° before the TDC setting in the direction of rotation to the TDC setting and mount the timing chain.
A description of disassembling and repairing engine are provided in chronological sequence on the following pages. The list of contents is provided to help take up work again after an interruption or to more easily find a certain point. They only describe direct removal and installation, and do not contain full details of procedures.
Attention must be paid to the following if work had been carried out on the cylinder head, for which the camshaft was removed
The bucket tappets expand without loading from the camshaft and require some time following installation to compress again. For this reason, fast assembly could cause "closed" valves to still be open and have contact with the pistons.
The following waiting times are necessary between installing of the camshaft and mounting the cylinder head.
| Room temperature (20°C) | 4 min. |
|---|---|
| 10°C ... 20°C | 11 min. |
| 0°C ... 10°C | 30 min. |
ROOM TEMPERATURE SPECIFICATION
Working on valve train with mounted cylinder head
Turn engine approx. 45° opposite the engine direction of rotation on the central bolt.
In this way none of the pistons will be in TDC.
Install camshaft in such a way that peaks of cams for cylinder No. 1 point to each other. Keep to the above mentioned waiting times. Turn engine from the 45° before the TDC setting in the direction of rotation to the TDC setting and mount the timing chain.
A description of disassembling and repairing engine are provided in chronological sequence on the following pages. The list of contents is provided to help take up work again after an interruption or to more easily find a certain point. They only describe direct removal and installation, and do not contain full details of procedures.
Attention must be paid to the following if work had been carried out on the cylinder head, for which the camshaft was removed
The bucket tappets expand without loading from the camshaft and require some time following installation to compress again. For this reason, fast assembly could cause "closed" valves to still be open and have contact with the pistons.
The following waiting times are necessary between installing of the camshaft and mounting the cylinder head.
| Room temperature (20°C) | 4 min. |
|---|---|
| 10°C ... 20°C | 11 min. |
| 0°C ... 10°C | 30 min. |
ROOM TEMPERATURE SPECIFICATION
Working on valve train with mounted cylinder head
Turn engine approx. 45° opposite the engine direction of rotation on the central bolt.
In this way none of the pistons will be in TDC.
Install camshaft in such a way that peaks of cams for cylinder No. 1 point to each other. Keep to the above mentioned waiting times. Turn engine from the 45° before the TDC setting in the direction of rotation to the TDC setting and mount the timing chain.
A description of disassembling and repairing engine are provided in chronological sequence on the following pages. The list of contents is provided to help take up work again after an interruption or to more easily find a certain point. They only describe direct removal and installation, and do not contain full details of procedures.