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9 Repair

BBW 46 / DBW 46

904

9.2.2 Replacement of Temperature Limiter

NOTE

The temperature limiter is installed only on heaters from

June 1988 and up or starting from serial number 71771

(BBW 46) and 38177 (DBW 46) or after performing the

modification (see 9.1.2.1).

9.2.2.1 Removal

1. Remove heater (see 8.7.1.1)

2. Break electrical connections (see 9.2.1.1).

WARNING

When removing temperature limiter from installed

condition allow coolant to cool down sufficiently to prevent

skin burns.

Also depressurise cooling system and refit cap

afterwards.

3. Withdraw protective cap (1, Fig. 902).

4. Unscrew temperature limiter (2) from heat exchanger

(9) and remove together with O-ring (3).

5. Perform procedures on components after

disassembly (refer to 9.1.1).

1 Protective cap

2 Temperature limiter

3 O-ring

4 Lock screw

5 O-ring

6 Flame sensor

7 O-ring

8 Temperature sensor

9 Heat exchanger

10 Burner head

11 O-ring

12 Temperature fuse

Fig. 902 Replacement of Temperature Limiter, Temperature Fuse, Temperature Sensor and Flame Sensor

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 39 40

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Webasto DBW 46 Wartungshandbuch Seite 31