W14.10-1027-09
Shown on engine 926.9 |
1 | Exhaust manifold | 6 | Heat shield | |
2 | Screw | 7 | Holder (only for engine 902.91/93, 925.9, 926.9) | |
3 | Oil pressure line | 8 | Oil return hose | |
4 | Turbocharger | 9 | Exhaust pipe | |
5 | Air intake hose | 10 | Valve fitting |
W14.10-1028-09
1 | Exhaust manifold | 10 | Valve fitting | |
2 | Screws | 11 | Seal | |
4 | Turbocharger | L | Shank length |
Danger | Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning caused by swallowing battery electrolyte or absorption of lead through the skin or orifices. Risk of death due to voltage U >= 25 V AC and U >= 60 V DC. | No fires, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. | |
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. | |
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 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. | |
Caution | Risk of injury caused by scraping or cutting body parts on sharp vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred vehicle 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 threaded connections fastened using a tightening angle-based tightening process | ||
Topical note | Notes on self-locking nuts and bolts | ||
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
Notes on compressed air connection systems | |||
Note on calculation of tightening torque when using insertion or socket tools with various effective lengths | |||
| Remove/install | ||
1 | Switch off ignition. | ||
2 | Disconnect ground line from battery. | See information from body manufacturer. | |
3 | Drain off coolant. | Only for engine 926.916. | |
4 | Remove charge air pipe from exhaust gas turbocharger (4) to charge air cooler. | ||
5 | Remove air intake hose (5) from exhaust gas turbocharger (4). | ||
6 | Remove holder from the metering device of the exhaust aftertreatment system. | Only for BlueTEC. | |
7 | Remove compressed-air line at engine brake cylinder. | Only for vehicles with constant throttle. | |
8 | Remove engine brake cylinder. | Only for engine 902.91/93, 925.9, 926.9. | |
9 | Loosen holder (7) for engine brake cylinder and swivel to the side. | Only for engine 902.91/93, 925.9, 926.9. | |
10 | Remove heat shield (6). | Bolt, shield to turbocharger | |
Bolt, shield to turbocharger and flap fitting | |||
11 | Loosen coolant lines on exhaust gas turbocharger (4). | Only for engine 926.916. | |
Installation: Install new sealing rings. | |||
12 | Remove exhaust pipe (9) from valve fitting (10) and from holder. | Installation: Clean sealing surfaces. | |
Bolt, clamp to exhaust pipe on valve fitting for engine brake/exhaust fitting | |||
13 | Remove oil return hose (8) with oil return feed line from exhaust gas turbocharger (4). | Collect engine oil which flows out in a suitable vessel. | |
Bolt, oil return flow line to turbocharger | |||
14 | Seal openings in oil return hose (8) and oil return feed line using suitable stop plugs. | ||
15 | Remove oil pressure line (3) . | Collect engine oil which flows out in a suitable vessel. | |
Installation: Before installing oil pressure line (3), fill the exhaust gas turbocharger bearing housing with a small amount of engine oil through the oil inlet hole. | |||
Union nut, oil pressure line to turbocharger | |||
16 | Seal off openings in oil pressure line (3) using suitable stop plugs. | ||
17 | Remove exhaust manifold (1) with exhaust gas turbocharger (4) and valve fitting (10) from the cylinder head. | Installation: First apply two screws (2) as an assembly aid in the lower row on the cylinder head, then lay on exhaust manifold (1) and install with the remaining screws (2). | |
Bolt, exhaust manifold to cylinder head | |||
18 | Check shank length (L) of screws (2). | If permissible shank length (L) is exceeded: | |
| |||
Replace respective screws (2). | |||
Screw, exhaust manifold | |||
19 | Remove exhaust gas turbocharger (4) from exhaust manifold (1). | Only when replacing exhaust manifold (1). | |
Installation: Replace nuts. | |||
Close off bores on exhaust gas turbocharger (4) using suitable plugs. | |||
Nut, turbocharger to exhaust manifold | |||
20 | Remove seals (11). | Installation: Install new seals (11). | |
21 | Install in the reverse order | ||
| Check | ||
22 | Check and correct oil level. | Engine oil | |
23 | Check, correct coolant level. | Only for engine 926.916. | |
| |||
24 | Start engine and run at idling speed. | The oil pressure must have built up no later than 10 s after the start. | |
If the oil pressure has not built up 10 seconds after the start: | |||
| |||
Switch off the engine and determine the cause. | |||
Engine oil pressure | |||
25 | Allow engine to run at varying speeds and check for leaks in the area of exhaust manifold (1). | Visual inspection. | |
26 | Switch off engine. | ||
27 | Check coolant circuit for leaktightness. | Only for engine 926.916. | |
Visual inspection. | |||
28 | Check and correct engine oil level. | Check engine oil level after waiting at least 5 min. after switching off the engine. | |
Engine oil |
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