Combustion Air Fan Wheel, Visual Inspection; Disassembly And Assembly; Overheat Fuse, Replacement; Removal - Webasto DBW 2010 Service And Repair Manual

REPAIR
9.1.1.4 C A
OMBUSTION
I
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.
DBW 2010
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.
Webasto Product N.A., Inc.
F W , V
IR AN HEEL ISUAL
Hexagon nut
0.15 ± 0.05 mm
(.006 ± .002 inch)
DBW 2010/2020/300 COOLANT HEATERS
9.2 D
ISASSEMBLY AND
9.2.1 O F
VERHEAT
9.2.1.1 R
EMOVAL
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 I
NSTALLATION
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 T
EMPERATURE
R
EPLACEMENT
9.2.2.1 R
EMOVAL
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 I
NSTALLATION
1. Turn temperature control thermostat clockwise into
bracket until snug.
2. Plug connector into connector block.
Observe electrical wiring color coding when
making connections.
50
A
SSEMBLY
, R
USE EPLACEMENT
C T
ONTROL HERMOSTAT
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