Technical data

Servicing work Air Top 2000 ST
808
8.7 Removal and installation
IMPORTANT
When the heater is installed it must not be dismantled.
8.7.1 Heater, removal and installation
8.7.1.1 Removal
1. Disconnect the battery.
2. Pull the cover off the top shell as described in 9.2.1.1
3. Disconnect the wiring harness plug from the control
unit.
4. Disconnect the cable to the metering pump at the
disconnection point.
5. If necessary disconnect the hot air hose or hoses
connection.
6. Disconnect the connection for the combustion air inlet
on the heater.
7. Disconnect the connections for the combustion air inlet
and exhaust outlet on the heater.
8. Remove four nuts and locking washers from the heater.
9. Remove the heater and discard the seal on the exhaust
outlet.
8.7.1.2 Installation
1. Place the heater with a new seal on the exhaust outlet
in the installation position and secure it with 4 nuts and
locking washers (use only genuine Webasto nuts).
2. Tighten the nuts to 6 +1 Nm.
3. Secure the connection for the combustion air inlet on
the heater.
4. Secure the connections for the combustion air inlet and
exhaust outlet on the heater.
5. Connect the metering pump cable to the metering
pump wiring harness.
6. Connect the wiring harness plug to socket X7 on the
control unit.
7. Fit the cover and secure it.
8. If necessary fit the hot air hose or hoses and secure
them.
9. Connect the battery.
10. Bleed the fuel supply system (see 8.8).
8.8 Start-up
After you have installed the heater, bleed the fuel supply
system carefully.
NOTE
As a result of the low fuel consumption the heater must be
switched on several times to fill the fuel line.
Conduct a trial of the heater to check all the connections for
leaks and to ensure that they are secure. If the heater suffers
a fault during operation, the fault must be located and
remedied.