AP47.20-B-0787A | Fuel pump with prefilter and water separator - replace filter element | 12.02.16 |
Cumbustion engine 374 with Vehicle 688.158, 688.159
B47.20-0003-05
Fuel pre-filter with electric pump and water separator
1 Electric wiring harness
2 Sensor
3 Drain valve
4 Transparent bowl
5 Filtering element
6 Sealing ring
7 Fuel pump body
8 Pump pre-filter
9 Bypass valve
10 Vent valve
| REMOVAL | ||
Danger! | Risk of explosion by ignition, Danger of poisoning by inhaling and swallowing fuel as well as Risk of injuries by skin and eye contact with fuel | It is not allowed to smoke, to start fires, sparks, open flames. Only keep fuel in appropriate recipients duly correspondingly identified. When handling fuel, use appropriate protective equipment and clothes | |
1 | Turn off the ignition switch | ||
2 | Disconnect the electric wiring harness (1) | ||
3 | Drain the fuel through the drain valve (3) | Catch the fuel in a suitable way. | |
4 | Lift out the vent valve cap (10) and depress the center pin | Catch the fuel in a suitable way. | |
5 | Remove the transparent bowl (4) | Utilize a suitable wrench. | |
6 | Remove the filtering element (5) | Dispose of the filtering element according to the current environmental legislation. | |
7 | Remove the fuel pump from the body (7) | ||
| Removing and installing the fuel pump | ||
| |||
8 | Remove the bypass valve (9) from the fuel pump body (7) | Do not try to remove the bypass valve without removing the fastening blade, otherwise, damage may occur. To remove the bypass valve, loosen the screw using a "Philips" screwdriver. | |
| CLEAN | ||
9 | Clean the fuel pump body (7) and the bypass valve (9) | Do not try to clean the pump body without removing the bypass valve, this may damage the fastening blade. To remove the bypass valve, loosen the screw using a "Philips" screwdriver. | |
10 | Clean the fuel pump pre-filter (8) | Clean using compressed air jets. If scaling sludge or clogging is detected, the pre-filter has to be replaced. | |
| Installing | ||
11 | Install the fuel pump body (7) | ||
| Removing and installing the fuel pump | ||
| |||
12 | Install the filtering element (5) | ||
13 | Install the transparent bowl (4) | ||
14 | Connect the electric wiring harness (1) | ||
15 | Start the vehicle and check the system for tightness |
Fuel pump