D01.00-1119-06
1 Compression recorder
2 Contact switch
| Remove/install | ||
Danger! | Risk of injury to skin and eyes caused by handling hot or glowing objects. | Wear safety gloves, protective clothing and safety glasses, if necessary. | |
Danger! | Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running | Secure vehicle to prevent it from moving by itself. | |
1 | Start engine and bring to operating temperature | Oil temperature approx. 80°C Only test compression when engine is at operating temperature. | |
2 | Stop engine and switch off ignition | ||
3 | Remove air filter housing | ||
4 | Remove spark plugs | ||
5 | Connect ground cable to battery | ||
6 | Crank engine with starter | To remove combustion residues from the cylinders. | |
| Checking | ||
7 | Press compression recorder (1) on tapped bore of spark plug for first cylinder | The sealing cone of compression recorder (1) must tightly seal tapped bore of spark plug. | |
| |||
8 | Turn engine over contact switch (2) for compression recorder (1) with the starter and check compression pressure | | |
9 | Carry out testing procedure in the cylinder order on the remaining cylinders in the same way | ||
10 | Compare pressure readings obtained with specified pressures | Compression installation tolerance or new value | |
Compression pressure permissible difference between individual cylinders | |||
Compression pressure wear limit or limit value | |||
If pressure reading is below the minimum compression pressure or if the permissible difference between the individual cylinders is exceeded. Refer to: | |||
Check cylinders for leaks | |||
11 | Install in the reverse order |
Compression pressure
Number | Designation | Engine | |
BE01.00-N-1001-01N | Compression installation tolerance or new value | bar | 12...16 |
BE01.00-N-1002-01N | Compression pressure permissible difference between individual cylinders | bar | 1.5 |
BE01.00-N-1003-01N | Compression pressure wear limit or limit value | bar | 10 |
Compression tester
001 589 76 21 00
Referenced documents
- ar0100d1300us Check cylinders for leaks
- ar0110d0110us Crank engine with starter
- ar0910d1150us Remove/install air filter housing
- ar1512d1010us Remove/install spark plugs
- ar5410d0003sd Disconnect/connect battery ground line
- as0000z000201a Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.
- as0000z000501a Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.