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Fuel supply
7.4.1.
Connecting two pipes with a hose
The correct procedure for connecting fuel lines with hosing is shown in
Figure 14.
Ensure that there are no leaks!
correct
Clip
wrong
Bubble
Fig. 14: Pipe / hose connection
7.5.
Dosing pump
The metering pump is a combined delivery, metering and shut-off
system and is subject to certain installation criteria
(see Figures 9 and 15).
7.5.1.
Installation location
The metering pump must be installed in a cool place as close as
possible to the tank (see Figure 9). The maximum ambient temperature
must not exceed +20°C at any time during operation.
The metering pump and fuel lines must not be installed within range of
the radiated heat from hot vehicle parts. A heat shield must be used if
necessary.
50
Air Top 3500 / Air Top 5000 D. 12 Volt und 24 Volt – diesel
Fig. 15: Metering pump DP 30
Bubble
7.5.2.
The metering pump must be secured with a vibration-damping mounting
(for example a rubberised clip). Its installation position is limited as
shown in Figure 15 in order to ensure effective automatic bleeding.
As a result of the risk of corrosion, only genuine Webasto parts may be
used for the plug connections between the metering pump and the
metering pump wiring harness.
Air Top 3500 / Air Top 5000
Installation position
Installation and attachment
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