– Read self-diagnosis of auxiliary/supplementary heater using
⇒ Vehicle diagnostic tester.
– When parts of the fuel system are removed or renewed, en‐
sure that all components for fuel delivery to the auxiliary/
supplementary heater are properly installed.
– Mark coolant hoses before removing to avoid any confusion
when reconnecting.
Following repair work in the vicinity of the auxiliary/supplementary
heater fuel line, check the following points:
♦ that the fuel lines are routed flush with the vehicle underbody
and are protected against mechanical damage.
♦ that the auxiliary/supplementary heater fuel line is protected
from heating which might disturb operation.
♦ The fuel line does not come in contact with parts that become
hot.
3.4
Contact corrosion
Contact corrosion can occur if unsuitable fasteners (bolts, nuts,
washers, etc.) are used.
For this reason, only fasteners with a special surface coating are
used.
In addition, rubber, plastic and adhesives are made of non-con‐
ductive materials.
If there is any doubt about the suitability of parts, a general rule
is to use new parts ⇒ Electronic parts catalogue (ETKA) .
3.5
Nuts and bolts
♦ Specified torques given are for unoiled nuts, bolts and screws.
♦ Always renew self-locking nuts and bolts.
♦ Always renew nuts and bolts with turning further angle.
3.6
Routing and attachment of lines
Risk of damage to lines
Lines may become damaged by moving or hot components.
– Route lines in their original positions.
– Ensure there is sufficient clearance to moving or hot compo‐
nents.
Transporter 2020 ➤
Auxiliary heater - Edition 04.2020
3. Repair notes
7
