P01.00-2422-06
Shown on engine 135.9
1 Oil filler neck cap
2 Cooling system cap
3 Pressure loss tester
4 Adapter
| Remove/Install | ||
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 engine | Secure vehicle to prevent it from moving. | |
1 | Start engine and warm up to normal operating temperature of approx. 80 °C | ||
Danger! | Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning from swallowing coolant. | Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage bottles. Wear protective gloves, protective clothing and eye protection. | |
2 | Rotate cooling system cap (2) at radiator half a revolution in counterclockwise direction, release pressure relief, then unbolt cooling system closing cap (2). | ||
3 | Remove spark plugs | ||
| Replace spark plugs | Model 454.0 with engine 134.9, 135.9 | |
Model 454.0 with engine 122.9 | |||
4 | Unscrew the oil filler neck cap (1) | ||
| Check | ||
5 | Position the piston of cylinder 1 to be tested with the TDC selector at ignition TDC | The TDC marking on the belt pulley must be aligned with the positioning edge on the timing case cover (arrow). | |
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6 | Screw the adapter (4) into the spark plug bore of cylinder 1 and connect the pressure loss tester (3) | Calibrate the pressure loss tester (3). Pay attention to the operator's manual for the pressure loss tester (3). | |
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7 | Pressurize cylinder 1 with compressed air and read off pressure loss at pressure loss tester (3) | Cylinder leakage permissible total loss indication | |
Determine the cause if a high pressure loss exists. | |||
8 | Inspect the remaining cylinders in the same way | Test the cylinders in ignition sequence. | |
Firing order | |||
9 | Install in the reverse order |
Cylinder leakage
Number | Designation | All engines | ||
BE01.00-P-1001-02Z | Cylinder leakage permissible total loss indication | % | 25 | |
Pressure loss tester
450 589 17 21 00
Referenced documents
- ap1510p1580fb Install new spark plugs
- ap1510p1580ff Replace spark plugs
- ar0100p130003ff Firing order
- 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.
- as2000z000101a Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.