W01.00-1085-09
Represented on engine 936.9 |
Y608 | Cylinder fuel injector 1 | Y610 | Cylinder fuel injector 3 | Y612 | Cylinder fuel injector 5 | ||
Y609 | Cylinder fuel injector 2 | Y611 | Cylinder fuel injector 4 | Y613 | Cylinder fuel injector 6 |
W01.00-1093-09
Represented on engine 936.9 |
1 | Common rail | 4 | Pressure hose | 7 | Compressometer | ||
2 | Closing plug | 5 | Clamping claw | ||||
3 | Adapter | 6 | Bolt |
3 | Adapter |
4 | Pressure hose |
8 | Tube adapter |
W01.00-1094-11
| Remove | ||
Warning | 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. | |
Warning | 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 | Keep all ignition sources out of hazard area. | |
Danger | Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel. | No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. | |
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
1 | Start the engine, let it heat up to operating temperature and then, stop the engine | Coolant temperature, approx. 80 °C. | |
2 | Remove the corresponding fuel injector, cylinder 1 to 6 (Y608, Y609, Y610, Y611, Y612, Y613), or cylinder 1 to 4 (Y608, Y609, Y610, Y611) | ||
3 | Close the openings of the common rail (1) with closing plugs (2) | Closing plug on Common Rail | |
Plug | |||
4 | Turn the ignition on | The ignition must not be turned off before the compression checking is completed, | |
| |||
otherwise, the fuel flow in the pump elements will be activated in the high pressure fuel pump. | |||
5 | Connect the diagnosis system, start the XENTRY, and perform the short test | The diagnosis system must not be disconnect during the compression pressure test, because, | |
| |||
otherwise, the fuel feed on the elements of the high pressure fuel pump will be activated. | |||
6 | Start the "compression test" | The process is completely controlled by the following menu: | |
| |||
"MCM - engine control unit (A4)" | |||
- "Select test" | |||
- "Carry out the compression test" | |||
- "Start test" | |||
By starting the test, the fuel flow on the components of the high pressure fuel pump will be cut off. | |||
7 | Actuate the switches of engine starting and engine stop, making the engine turns several times by means of the starter | ||
| Check | ||
8 | Insert the adapter (3) with the pressure hose (4) in the water protective sleeve of the cylinder to be checked, and screw in the clamping claw (5) with the removed bolt (6) | Apply lubricant on the seal rings in the adapter (3). | |
Screw of the fastening claw adapter for test of compression pressure on cylinder head | |||
High-temperature grease | |||
Adapter | |||
9 | Connect the compressometer (7) on the pressure hose (4) | Observe the operating manual of the compressometer (7). | |
Compression tester | |||
10 | Actuate the switches of engine starting and engine stop, making the starter turns, at least, 8 turns | The measured values are recorded in the diagram sheet. | |
11 | Unscrew the bolt (6)and remove the clamping claw (5) | ||
12 | Displace the tube adapter (8) on the pressure hose (4) and install it on the adapter (3) | ||
13 | Remove the adapter (3) with the tube adapter (8) from the water protective sleeve | ||
14 | Verify eventual other cylinder the same way | ||
15 | Compare the data of the diagram sheet with the admissible values | Permissible pressure difference between each of the cylinders | |
End pressure of wear compression or limit value to starter | |||
If the measured values are different from the nominal values, | |||
| |||
determine and solve the problem. | |||
| Install | ||
16 | Remove the closing plug (2) from the common rail (1) | ||
17 | Install the corresponding fuel injector, cylinder 1 to 6 (Y608, Y609, Y610, Y611, Y612, Y613), or cylinder 1 to 4 (Y608, Y609, Y610, Y611) | ||
18 | Finish the "compression test" | Clean the failure memory after finishing the test. | |
19 | Turn off ignition | ||
20 | Finish the XENTRY and remove the diagnosis system | ||
21 | Fill up the fuel low pressure line on the engine |
001 589 78 21 00
Compression tester
936 589 01 91 00
Plug
936 589 00 91 00
Adapter
Referenced documents
- ah0000n500001h Notes on avoiding damage through contamination and foreign objects
- ar0703b0004evi Remove/install fuel injectors
- ar0716b1007evi Fill fuel low-pressure circuit on engine
- 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.
- as0716z000101b Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure
- as4700z000101a Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.