W07.08-1011-09
Shown on engine 470.9 |
1 | Electrical connector | 6 | Electrical wiring harness | 11 | Rubber damper | ||
2 | Bolts | 7 | Fuel line | 12 | Electrical wiring harness | ||
3 | Electrical connector | 8 | Bolts | 13 | Fuel line | ||
4 | Oil suction pipe | 9 | Screw | 14 | Banjo bolt | ||
5 | Bracket | 10 | Bracket | A4 | Engine management control unit (MCM) |
Shown on engine 470.9 |
7 | Fuel line |
13 | Fuel line |
15 | Fuel filter module |
16 | Screw/bolt (only for engine 470.9 or engine 471.9 as of engine end number 032691) |
17 | Sealing rings |
W07.08-1012-04
Shown on engine 471.9 |
15 | Fuel filter module |
18 | Union nuts (only for engine 471.9 up to engine end number 032690) |
19 | Fuel lines |
W07.08-1014-11
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 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. | |
Topical note | Information on preventing damage to electronic components due to electrostatic discharge | ||
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
| Remove | ||
1 | Connect diagnostic system and perform quick test | Only if the engine management (MCM) control unit (A4) is replaced. | |
See information from body manufacturer. | |||
2.1 | Select "Control unit replacement" and follow the instructions | If the engine management (MCM) control unit (A4) is replaced. | |
Control unit replacement is completely menu-assisted under: | |||
2.2 | Switch off ignition | If engine management (MCM) control unit (A4) is not replaced. | |
3 | Disconnect electrical connector (1) from engine management (MCM) control unit (A4) | ||
4 | Remove screw/bolts (2) and disconnect electrical connection (3) on engine management (MCM) control unit (A4) | ||
5 | Remove bracket (5) on engine management (MCM) control unit (A4) | ||
6 | Drain fuel at fuel filter module (15) | ||
7 | Remove banjo bolts (14) | Collect escaping fuel. | |
8 | Remove screw (9) | ||
9 | Create access to electrical wiring harness (6) | ||
10.1 | Remove screw/bolt (16) and take off fuel lines (7, 13) | Engine 470.9, engine 471.9 as of engine end number 032691 | |
Collect escaping fuel. | |||
10.2 | Unscrew union nuts (18) and take off fuel lines (19) | Engine 471.9 up the engine end number 032690 | |
Collect escaping fuel. | |||
11 | Remove screws/bolts (8) | ||
12 | Remove and take out engine management (MCM) control unit (A4) with the rubber damper (11) | ||
| Install | ||
13 | Install engine management (MCM) control unit (A4) with the rubber damper (11) | Take note of installation position of rubber dampers (11). | |
14 | Tighten screw/bolts (8) | Engine 470.9, engine 471.9Bolt, engine management (MCM) control unit to crankcase | |
15.1 | Place fuel lines (7, 13) with new sealing rings (17) on the fuel filter module (15) and tighten screw/bolt (16) | Engine 470.9, 471.9 as of engine end number 032690 | |
Bolt, flange (fuel cooling system) to fuel filter module | |||
15.2 | Place fuel lines (19) with new sealing rings (17) on the fuel filter module (15) and tighten union nuts (18) | Engine 471.9 up the engine end number 032690 | |
Union nut, fuel line (fuel cooling system) to fuel filter module | |||
16 | Tighten banjo bolts (14) | Replace sealing rings of banjo bolts (14). | |
Engine 470.9, engine 471.9Banjo bolt, fuel line from fuel filter module to engine management (MCM) control unit | |||
17 | Tighten bracket (10) with screw/bolt (9) | Engine 470.9, engine 471.9Bolt, bracket for fuel line to engine management (MCM) control unit | |
18 | Attach bracket (5) to engine management (MCM) control unit (A4) | Engine 470.9, engine 471.9Bolt, bracket for oil suction pipe to engine management (MCM) control unit | |
19 | Connect electrical connection (3) to engine management (MCM) control unit (A4) and tighten screws/bolts (2) | Engine 470.9, engine 471.9Bolt, electrical connection to engine management (MCM) control unit | |
20 | Connect electrical connector (1) to engine management (MCM) control unit (A4) | ||
21 | In the diagnostic system, follow the instructions for "control unit replacement" | Only if engine management (MCM) control unit (A4) was replaced. | |
See information from body manufacturer. | |||
22 | Fill fuel low-pressure circuit | ||
23 | Start engine and perform an engine test run | Allow engine to run at a higher rotational speed. | |
If engine fails to start or only runs for a brief period. | |||
| |||
Fill fuel low-pressure circuit again. | |||
24 | Remove diagnostic system | Only if engine management (MCM) control unit (A4) was replaced. |
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