Webasto DBW 46 Repair Manual download pdf (Page 50)

Webasto Thermo & Comfort N.A., Inc. 50 www.techwebasto.com

REPAIR DBW 2010/2020/300 COOLANT HEATERS

9.1.1.4 COMBUSTION AIR FAN WHEEL, VISUAL

NSPECTION

– The fan wheel has to be checked for contamination,

traces of grinding and cracks.

DBW 2010

ONLY:

The clearance between the blower wheel and blower

case must be measured (measurable with a feeler gauge)

at the narrowest point. Clearance = 0.15/-0.05 mm.

Figure 35: Clearance Adjustment - DBW 2010 Fan

DBW 2020/300 ONLY:

– The hub of the impeller has to be checked for cracks

and the cover disc (back wall) as to its stability.

9.2 DISASSEMBLY AND ASSEMBLY

9.2.1 OVERHEAT FUSE, REPLACEMENT

9.2.1.1 REMOVAL

1. Disconnect electrical connection to overheat fuse at

connector block.

2. Turn counterclockwise to remove overheat fuse

(item1, Fig. 36) from dry-well.

9.2.1.2 INSTALLATION

1. Turn overheat fuse clockwise into dry-well until

snug but not tight.

2. Turn out 1/2 turn.

3. Plug connector into connector block.

NOTE: Observe electrical wiring color coding

when making connections.

9.2.2 TEMPERATURE CONTROL THERMOSTAT,

EPLACEMENT

9.2.2.1 REMOVAL

1. Disconnect electrical connection to temperature

control thermostat at connector block.

2. Turn counterclockwise to remove temperature

control thermostat (item 2, Fig. 36).

9.2.2.2 INSTALLATION

1. Turn temperature control thermostat clockwise into

bracket until snug.

2. Plug connector into connector block.

Observe electrical wiring color coding when

making connections.

0.15 ± 0.05 mm

(.006 ± .002 inch)

Hexagon nut

DBW 2010

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Webasto DBW 46 Repair Manual Page 50

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