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Repair instructions
7.18 Aerating the fuel tank
The two-way valve has the following properties:
• Checks opening pressure in both directions,
which prevents a positive pressure or a
vacuum developing in the fuel tank and
impairing engine performance. This also
prevents fuel leakage.
•
Opening pressure outwards 10 – 45 kPa
(0.1-0.45 bar).
•
Opening pressure inwards (vacuum) max. 7
kPa (0.07 bar).
Test
Opening pressure outwards:
1.
Open the fuel cap and leave it open during the
entire test. Empty the tank of fuel.
2. Connect the 531 03 06-23 pressure gauge to
the tank valve as outlined in Figure 68.
3. Switch the pressure gauge to vacuum mode.
4. Pump 3 times.
5.
After pumping, the indicator must be between
10-45 kPa (0.1-0.45 bar).
Opening pressure inwards:
1.
Open the fuel cap and leave it open during the
entire test. Empty the tank of fuel.
2. Connect the 531 03 06-23 pressure gauge to
the tank valve.
3. Switch the pressure gauge to pressure mode.
4. Pump 3 times.
5.
After pumping, the indicator must stop at
max. 7 kPa (0.7 bar).
Fig 67
Fig 68
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