1 | Compression recorder |
2 | Adapter |
3 | Screw-in piece |
P01.00-3302-03
Danger ! | 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. | Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. | |
Danger ! | Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure | Remove all ignition sources from hazard area. | |
Danger ! | Risk of injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | |
| Remove/install | ||
1 | Bring engine up to operating temperature (approx. 80°C) | Only check compression pressure for an engine is at operating temperature. | |
2 | Turn off engine | ||
3 | Remove engine cover | Installation: Ensure correct seating of the engine cover. | |
4 | Detach fuel filter with attached fuel lines and place to one side | ||
| |||
5 | Remove glow plugs | ||
6 | Crank engine with starter | ||
Do not crank engine using the ignition key in electronic ignition lock control unit but use contact switch for compression recorder (1). | |||
Crank engine several times to eliminate combustion residues in the cylinder. | |||
7 | Attach screw-in piece with check valve installed into glow plug hole for cylinder to be checked | Screw-in fitting | |
8 | Attach compression recorder with a flexible adapter on screw-in piece | Screw-in fitting | |
Compression tester | |||
| Check | ||
9 | Check compression pressure | Crank engine with starter | |
Do not crank engine using the ignition key in electronic ignition lock control unit; use contact switch for compression recorder instead. | |||
To check compression pressure, the engine must be turned over using the starter for at least eight revolutions. | |||
10 | Carry out testing procedure in the cylinder order on remaining cylinders in the same way | ||
11 | Compare pressure readings obtained with test values | Installation tolerance or new value of compression pressure | |
Wear limit or limit value of compression pressure | |||
Compression pressure, permissible difference between the cylinders | |||
Pressure value outside the tolerance range. | |||
| |||
Check for cylinder leakage | |||
12 | Install in the reverse order | ||
13 | Check fuel system for leaks with engine running |
642 589 02 63 00
Screw-in fitting
001 589 76 21 00
Compression tester
Referenced documents
- ap4720p0780ewd Replace fuel filter
- ar0100p1300old Check cylinders for leaks
- ar0110p0110old Crank engine with starter
- ar1520p4111old Remove/install glow plugs
- 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.
- as0716z000101a Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure