S01.00-4531-09
1 | Thread adapter | 3 | Pressure loss tester | |
2 | Dead center locator | 4 | Spark plug thread |
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. | |
Warning | Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. 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 containers. | |
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. | |
Caution | Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil | Wear protective gloves, protective clothing and safety glasses. | |
Topical note | Notes on coolant | ||
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
| Remove | ||
1 | Bring engine to operating temperature (approx. 80 °C). | Only check cylinder leakage when the engine is at normal operating temperature. | |
2 | Switch off ignition and store transmitter key outside of transmitter range (min. 2 m). | ||
3 | Remove spark plugs (R4). |
| |
Model 447, 448 with engine 274 | |||
4 | Remove cap on coolant expansion reservoir. | ||
5 | Remove cap on engine oil filler neck. | ||
| Check | ||
6 | Screw thread adapter (1) into spark plug thread (4) of cylinder to be checked. | Screw-in fitting | |
7 | Attach dead center locator (2) to thread adapter (1). | Commercially available devices/tools | |
Screw-in fitting | |||
8 | Position piston of cylinder to be checked at top dead center (ignition TDC) using the dead center locator (2). | | |
Crank engine at crankshaft center bolt in direction of engine rotation. | |||
Commercially available devices/tools | |||
Socket wrench bit | |||
Screw-in fitting | |||
9 | Remove dead center locator (2) from thread adapter (1). | Commercially available devices/tools | |
Screw-in fitting | |||
10 | Apply compressed air to cylinder. | Screw-in fitting | |
Pressure loss tester | |||
If the crankshaft rotates: | |||
| |||
Remove compressed-air connection and install retaining lock for crankshaft. | |||
11 | Remove starter (M1) and swing out of working area. | If the crankshaft rotates: | |
Model 907 with engine 274 | |||
Model 447, 448 with engine 274 | |||
The electrical lines are not separated. | |||
12 | Install retaining lock for crankshaft. | Socket wrench bit | |
Retaining lock | |||
If the crankshaft rotates: | |||
| |||
Insert retaining lock in starter opening and engage in starter ring gear. | |||
If necessary, | |||
| |||
Turn engine in direction of engine rotation. | |||
13 | Apply compressed air to cylinder and read off pressure loss from pressure loss tester (3). | ||
Determine loss of pressure at cylinder | |||
Cylinder leakage: permissible loss total indication | |||
Cylinder leaktightness: Permissible losses at valves and cylinder head gasket | |||
Cylinder leaktightness: Permissible losses at pistons and piston rings | |||
Screw-in fitting | |||
Pressure loss tester | |||
In case of increased pressure loss: | |||
| |||
Determine cause. | |||
14 | Perform check of additional cylinders in engine firing order. | ||
Screw-in fitting | |||
Pressure loss tester | |||
| Install | ||
15 | Remove all tools. | Pressure loss tester | |
Retaining lock | |||
Screw-in fitting | |||
16 | Install cap on engine oil filler neck. | ||
17 | Install cap on coolant expansion reservoir. | ||
18 | Install starter (M1). | If the starter (M1) was removed. | |
Model 907 with engine 274 | |||
Model 447, 448 with engine 274 | |||
19 | Install spark plugs (R4). |
| |
Model 447, 448 with engine 274 | |||
| Check | ||
Warning | 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 hazard area. | |
20 | Perform engine test run; in this connection, check engine for proper operation and leak tightness. |
Cylinder leakage |
Number | Designation | Engine 000, 102, 115, 271, 272, 274, 602, 611, 612, 615, 616, 617, 632, 642, 646, 647, 651 | Engine 000, 104, 112, 161, 166, 200, 272, 274, 607, 608, 611, 622, 642, 646, 651, 661, 662, 668, 699 | |
BE01.00-P-1001-02Z | Cylinder leakage: permissible loss total indication | % | 25 | 25 |
Cylinder leakage |
Number | Designation | Engine 000, 102, 115, 271, 272, 274, 602, 611, 612, 615, 616, 617, 632, 642, 646, 647, 651 | Engine 000, 104, 112, 161, 166, 200, 272, 274, 607, 608, 611, 622, 642, 646, 651, 661, 662, 668, 699 | |
BE01.00-P-1002-02Z | Cylinder leaktightness: Permissible losses at valves and cylinder head gasket | % | 10 | 10 |
Cylinder leakage |
Number | Designation | Engine 000, 102, 115, 271, 272, 274, 602, 611, 612, 615, 616, 617, 632, 642, 646, 647, 651 | Engine 000, 104, 112, 161, 166, 200, 272, 274, 607, 608, 611, 622, 642, 646, 651, 661, 662, 668, 699 | |
BE01.00-P-1003-02Z | Cylinder leaktightness: Permissible losses at pistons and piston rings | % | 20 | 20 |
270 589 01 91 00
Screw-in fitting
450 589 17 21 00
Pressure loss tester
112 589 03 40 00
Retaining lock
001 589 65 09 00
Socket wrench bit
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