Removal - Webasto Thermo Top V Workshop Manual

Servicing work
8.7 Heater, removal and installation

8.7.1 Removal

1 Interrupt power supply of heater by removing 20 A
blade fuse from Webasto fuse holder.
2 Separate connectors on heater.
3 Open coolant cap, release pressure and close cap again.
4 Loosen hose clamps and pull coolant hoses off heater.
5 Disconnect exhaust pipe from heater or detach fasteners
of exhaust system.
6 Remove heater from bracket or detach bracket with
heater from vehicle.
7 Loosen hose clamps, pull off fuel line and seal off with
suitable sealing plugs etc.
All open plugs and connectors must be protected against
moisture and soiling.
The coolant must be prevented from escaping with hose
clamping pliers or caught with appropriate containers.
8.7.2 Installation
1 Move heater into position and fasten on bracket.
2 Connect fuel line and fasten with hose clamp.
3 Connect coolant hoses and fasten with spring clips.
4 Fasten exhaust pipe on heater.
5 Restore all electrical connections on plug connector.
6 Connect vehicle battery.
7 Bleed coolant circuit.
8 Bleed fuel system if necessary.
WARNING
Only the original-equipment wiring harness approved by
Webasto may be used.
IMPORTANT
A polarity reversal of the power supply can result in damage
to the control unit. The correct polarity of the connection
wires must be ensured. A direct connection to a power sup-
ply without an intermediate fuse is not permissible.
804
Visit www.butlertechnik.com for more technical information and downloads.
NOTE
NOTE
8.8 Initial start-up
After the heater has been installed, the coolant circuit and
the fuel supply system must be carefully bled. Observe the
vehicle manufacturer's specifications when doing so.
All coolant and fuel connections must be checked for leaks
and secure attachment during a trial run of the heater. If the
heater suffers a fault during operation, troubleshooting
must be carried out (see Chapter 5).
www.butlertechnik.com
Thermo Top V