Dosing Pump; Fuel Filter - Webasto Air Top 2000 D Service And Repair Manual

8 Servicing
Connection of 2 Pipes with Hose
The proper connection of fuel lines with hoses is shown
in Fig. 805.
correct
clamp
wrong
bubble
Fig. 805 Pipe/Hose Connection

8.6.3 Dosing Pump

The dosing pump is a combined delivery, dosing, and
shut-off system and is subject to certain installation crite-
ria (see Figs. 801 and 806).
AT 2000. 12 Volt and 24 Volt - Fuel and Diesel
AT 2000 D. 12 Volt and 24 Volt - Diesel DP 30
Installation Position only Horizontal
Fig. 806 Dosing Pump, Installation Position
and Attachment
804
bubble
0-90° 0-90°
0°
8.6.3.1 Installation Location
It is advantageous to mount the dosing pump in a cool
location. The ambient temperature must never exceed
+20 °C during operation.
Dosing pump and fuel lines must not be installed in loca-
tions exposed to heat radiated by hot vehicle compo-
nents. A heat shield is to be provided as required.
8.6.3.2 Installation and Attachment
The dosing pump is to be attached with anti-vibration
mounts. The installation location is limited according to
Fig. 806 to ensure sufficient self-venting capability. Due
to the danger of corrosion the plug connection between
dosing pump and dosing pump cable loom may only use
Webasto original parts.

8.6.4 Fuel Filter

If there is the probability of contaminated fuel only the
Webasto filter, Order No. 487 171, may be used. Installa-
tion possibly vertical up to horizontal at the most
(observe direction of flow).
A
Fig. 807 Fuel Filter
Air Top 2000
0 - 90°
ø 5