Technical data

8 Servicing HL 90
804
Connection of 2 Pipes with Hose
The proper connection of fuel lines with hoses is shown
in Fig. 806.
Fig. 806 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
criteria (Fig. 802 and 807).
Fig. 807 Dosing Pump, Installation and Attachment
8.6.3.1 Installation Location
Prior to installation of dosing pump ensure that the
pressure at the tapping location does not exceed 0.2 bar.
It is advantageous to mount the dosing pump in a cool
location. The ambient temperature must never exceed
+40° C during operation.
Dosing pump and fuel lines must not be installed in
locations exposed to heat radiated by hot vehicle
components. A heat shield is to be provided as necessary.
The preferred installation location is near the tank.
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. 807 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.
Installation possibly vertical up to horizontal the most
(observe direction of flow).
Fig. 808 Fuel Filter
correct
wrong
clamp
bubble bubble
0-180° 0-180°
15° - 90°
15°
Dosing pump DP 2
Dosing pump DP 30
A
ø 5
0 - 90°