Test Compression Pressure - AR01.00-P-1200MRA
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Engine 177, 274.9, 276.8 in model 205
Engine 264 in model 205, 253
except code B01 (48V technology)
Engine 274.9, 276.8 in model 253
Shown on engine 274.9 in model 205
| 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. | AS00.00-Z-0002-01A | |
| Risk of burn injuries
, suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust. |
Wear protective clothing and safety glasses. Use the extraction system. Move people out of the danger zone. |
AS49.00-Z-0001-01A | |
| 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. | AS00.00-Z-0005-01A | |
| Notice | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Remove | |||
| 1 | Warm up engine to normal operating temperature. | ||
| 2 | Switch off ignition and store transmitter key outside of transmitter range (min. 2 m). | ||
| 3 | Remove spark plugs. | ||
| Engine 276.8 in model 205, 253 | AP15.10-P-1580D | ||
| Engine 274.9 in model 205, 253 | AP15.10-P-1580CWF | ||
| Engine 177 in model 205 | AP15.10-P-1580C | ||
| Engine 264 in model 205, 253 except code B01 (48V technology) |
AP15.10-P-1580MCU | ||
| 4 | Connect compression pressure recorder (01). | AR01.10-P-0010-01MRA | |
| Fig 2 | |||
| 5 | Turn engine by pressing the contact switch on the compression pressure recorder (01) for approx. 5 s. | AR01.10-P-0110MRA | |
| Fig 2 | |||
| 6 | Screw screw-in piece into the tapped bore of the cylinder to be checked. | Fig 1 | |
| 7 | Connect compression pressure recorder (01) to the screw-in piece. | Fig 2 | |
| Check | |||
| 8 | Turn engine by pressing the contact switch of the compression pressure recorder (01) until no further pressure rise can be observed on the compression pressure recorder (01). | AR01.10-P-0110MRA | |
| Fig 2 | |||
| 9 | Carry out test procedure on further cylinders in the same way. | ||
| 10 | Compare measurement values with permissible values. | Installation tolerance or new value of compression pressure | *BE01.00-P-1001-01B |
| Compression pressure, permissible difference between the cylinders | *BE01.00-P-1002-01B | ||
| Wear limit or limit value of compression pressure If the minimum compression pressure is not achieved or the permissible difference between the individual cylinders is exceeded, ↓ Check cylinder leakage. |
*BE01.00-P-1003-01B | ||
| Engine 177, 274.9, 276.8 in model 205 Engine 274.9, 276.8 in model 253 |
AR01.00-P-1300MRA | ||
| Engine 264 in model 205, 253 except code B01 (48V technology) |
AR01.00-P-1300MRI | ||
| Install | |||
| 11 | Disconnect compression pressure recorder (01) from screw-in piece. | Fig 2 | |
| Fig 1 | |||
| 12 | Remove screw-in piece. | ||
| 13 | Disconnect compression pressure recorder (01) with adapter line (3) and connection line (4). | Fig 2 | |
| 14 | Install spark plugs. | ||
| Engine 276.8 in model 205, 253 | AP15.10-P-1580D | ||
| Engine 274.9 in model 205, 253 | AP15.10-P-1580CWF | ||
| Engine 177 in model 205 | AP15.10-P-1580C | ||
| Engine 264 in model 205, 253 except code B01 (48V technology) |
AP15.10-P-1580MCU |
COMPRESSION PRESSURE
| Number | Designation | Engine 177 E 8.6 | Engine 177 E 10.5 | |
|---|---|---|---|---|
| BE01.00-P-1001-01B | Installation tolerance or new value of compression pressure | bar | 10...14 | 13...17 |
COMPRESSION PRESSURE
| Number | Designation | Engine 264 | Engine 274.910 | |
|---|---|---|---|---|
| BE01.00-P-1001-01B | Installation tolerance or new value of compression pressure | bar | 13...17 | 12...16 |
COMPRESSION PRESSURE
| Number | Designation | Engine 274.920 in model 167, 172, 204, 205, 207, 213, 218, 238, 253 | Engine 276 | |
|---|---|---|---|---|
| BE01.00-P-1001-01B | Installation tolerance or new value of compression pressure | bar | 13, 5...17, 5 | 12...16 |
COMPRESSION PRESSURE
| Number | Designation | Engine 177 E 8.6 | Engine 177 E 10.5 | |
|---|---|---|---|---|
| BE01.00-P-1002-01B | Compression pressure, permissible difference between the cylinders | bar | ≤ 2, 0 | ≤ 2, 0 |
COMPRESSION PRESSURE
| Number | Designation | Engine 264 | Engine 274.910 | |
|---|---|---|---|---|
| BE01.00-P-1002-01B | Compression pressure, permissible difference between the cylinders | bar | ≤ 1, 5 | ≤ 1, 5 |
COMPRESSION PRESSURE
| Number | Designation | Engine 274.920 in model 167, 172, 204, 205, 207, 213, 218, 238, 253 | Engine 276 | |
|---|---|---|---|---|
| BE01.00-P-1002-01B | Compression pressure, permissible difference between the cylinders | bar | ≤ 1, 5 | ≤ 1, 5 |
COMPRESSION PRESSURE
| Number | Designation | Engine 177 E 8.6 | Engine 177 E 10.5 | |
|---|---|---|---|---|
| BE01.00-P-1003-01B | Wear limit or limit value of compression pressure | bar | 7, 5 | 10, 5 |
COMPRESSION PRESSURE
| Number | Designation | Engine 264 | Engine 274.910 | |
|---|---|---|---|---|
| BE01.00-P-1003-01B | Wear limit or limit value of compression pressure | bar | 11 | 10 |
COMPRESSION PRESSURE
| Number | Designation | Engine 274.920 in model 167, 172, 204, 205, 207, 213, 218, 238, 253 | Engine 276 | |
|---|---|---|---|---|
| BE01.00-P-1003-01B | Wear limit or limit value of compression pressure | bar | 11, 5 | 10, 0 |