Fig. 904 Cable For Exhaust Temperature Sensor; Fig. 905 Sealing Surface Of Exhaust Temperature Sensor; Fig. 906 Top View Of Heat Exchanger - Webasto Air Top Evo 40 Workshop Manual

Air Top Evo 40 / Air Top Evo 55
9.2.7 Replacing exhaust temperature sensor
9.2.7.1 Removal
1. Remove heater (see 8.7.1.1).
2. Remove housing parts (see 9.2.1).
3. Remove control unit (see 9.2.3.1).
4. Remove drive unit (see 9.2.6.1).
5. Remove 2 screws (1, Fig. 907) and take off spring clip (2).
Discard spring clip (2).
6. Press out cable grommet on exhaust-temperature sensor
connection cable toward inside out of heat exchanger (6).
7. Pull out exhaust temperature sensor (10) and discard.
9.2.7.2 Installation
The exhaust temperature sensor must be handled with care.
IMPORTANT: Ceramic component!
– Pressing and pulling is not permitted.
– Only installation by hand is permissible.
– Use no tools, such as pliers etc.
IMPORTANT
The exhaust temperature sensor and the spring clip must be
replaced after every removal!
Permissible bending angle of cable: max. 30° (see Fig. 904).
• Permissible loading max. 10 N per individual wire of
cable (see Fig. 904).
• Remove sensor from package with two hands: Gripping
points on sensor head and connector.
• When installing, insert sensor with two hands: Gripping
points on sensor head and connector.
• Do not pull on cable after installing sensor.
• Discard sensor after dropping and do not install.
• Do not press down cable guide lugs up to stop when
installing.
Danger of cable damage.
• Sealing surface must be dirt-free (see Fig. 905).
Fig. 904 Cable for exhaust temperature sensor
Visit www.butlertechnik.com for more technical information and downloads.
< 10 N
< 30°
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Fig. 905 Sealing surface of exhaust temperature sensor
1. Guide new exhaust temperature sensor (10, Fig. 907) into
hole provided for this purpose.
The cable must face toward the hole in the heat
exchanger (6).
2. Fit new spring clip (2) with 2 screws (1).
3. Guide connector of exhaust temperature sensor (10)
through hole in heat exchanger (6) and press cable
grommet on exhaust temperature sensor connection
cable from inside into heat exchanger (6) (see Fig. 906).
Fig. 906 Top view of heat exchanger
4. Install drive unit (see 9.2.6.2).
5. Install control unit (see 9.2.3.2).
6. Fit heating air fan (see 9.2.5.2).
7. Install housing parts (see 9.2.2).
8. Install heater (see 8.7.1.2)
9. Check CO setting and adjust if necessary (see Section
2
6.3).
Repair
906