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BBW 46 / DBW 46

9 Repair

907

9.2.7 Replacement of Combustion Air Fan

9.2.7.1 Removal

1. Remove heater (see 8.7.1.1).

2. Break electrical connections (see 9.2.1.1).

3. Loosen hose clamp (4, Fig. 904) on air intake muffler

(5).

4. Loosen hexagon socket head cap screws (6).

5. Withdraw combustion air fan (1) from air intake muffler

(5) and burner head (7) and remove.

6. Perform procedures on components after

disassembly (refer to 9.1.1).

9.2.7.2 Installation

1. Locate combustion air fan (1, Fig. 904) for assembly

and slide onto air intake muffler (5) and burner head

(7).

2. Screw hexagon socket head cap screws (6) into

burner head and torque to 4.5 Nm.

3. Tighten hose clamp (4) on air intake muffler (5).

4. Make electrical connections (see 9.2.1.2).

5. Secure cable with cable tie (2).

6. Install heater (see 8.7.1.2).

7. Perform CO

adjustment procedure (see 6.2.1).

1 Combustion air fan

2 Cable tie

3 O-ring

4 Hose clamp

5 Air intake muffler

6 Hexagon socket head cap screw (2)

7 Burner head

Fig. 904 Replacement of Combustion Air Fan

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Webasto DBW 46 Wartungshandbuch Seite 34