AP47.20-D-0783A | Fuel prefilter with water separator - replacing filter element | 8.12.09 |
ENGINES 900, 904 in MODEL 668, 670 with CODE (K46) Fuel prefilter with water separator:
N47.20-2139-05
1 Filter head
2 Filter element
3 Separating vessel
4 Sealing ring
5 Shutoff valve
6 Bleed screw
7 Fuel priming pump
8 Sealing ring
9 Electrical connector for heater
10 Drain valve
| Removing | ||
Danger! | Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel and risk of injury to eyes and skin caused by contact with fuel | No fire, sparks, open flames or smoking. Wear protective clothing when handling fuel. | |
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 the engine as it is running | Secure vehicle to prevent it from moving by itself. | |
1 | Place receptacle under fuel prefilter | ||
2 | Open drain valve (10) and bleed screw (6) | Allow filter element (2) to drain. Dispose off the water-fuel mixture in an environmentally acceptable manner. | |
3 | Disconnect electrical connector for heater (9) | Only if a heater is fitted in the separator (3). | |
4 | Unscrew filter element (2) | ||
5 | Unscrew separating vessel (3) from filter element (2) | Replace the damaged separator (3). | |
6 | Clean separating vessel (3) | Make sure that the groove for the seal ring (8) is clean. | |
| Install | ||
7 | Screw separator (3) with new seal ring (8) finger-tight onto filter element (2) | Coat sealing ring (8) with fuel or engine oil. Do not use a tool for tightening. | |
8 | Screw filter element (2) with new seal ring (4) finger-tight onto filter head (1) | Coat the seal ring (4) with engine oil. Do not use a tool for tightening. | |
9 | Close the drain valve (10) | ||
10 | Connect electrical connector for heater (9) | Only if a heater is fitted in the separator (3). | |
11 | Operate fuel priming pump (7) until fuel is discharged free of bubbles at bleed screw (6) | ||
12 | Close bleed screw (6) | ||
13 | Start the engine and bleed the fuel system | Run the engine for approx. 1 minute. The fuel system is bled automatically. | |
14 | Check fuel prefilter for leaks with engine running |
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