Webasto Product N.A., Inc. 54 www.techwebasto.com
REPAIR DBW 2010/2020/300 COOLANT HEATERS
Figure 40: Fuel Pump Replacement
9.2.8 FUEL NOZZLE, REPLACEMENT
9.2.8.1 REMOVAL
1. Swing burner head open (see Sec. 8.5.1).
2. Unscrew and remove nozzle using a nozzle wrench
or two wrenches (16 mm & 19 mm).
NOTE: Ensure cleanliness is maintained when
installing the nozzle. Only touch the nozzle at
its hexagon surface. The fuel nozzle should be
replaced annually.
NOTE: If ignition electrodes are disturbed
during nozzle replacement, they will require
adjustment (see Sec. 6.2.3).
9.2.8.2 INSTALLATION
1. Screw in new high pressure nozzle and tighten to
20 Nm (15 lb-ft.).
2. Swing burner head closed (see Sec. 8.5.1).
Figure 41: Nozzle Replacement
9.2.9 FLAME DETECTOR, REPLACEMENT
9.2.9.1 REMOVAL
1. Swing burner head open (see Sec. 8.5.1).
2. Remove screw and lock washer and slide flame
detector out of slot in disc.
3. Disconnect electrical leads to flame detector.
9.2.9.2 INSTALLATION
1. Connect electrical leads to new flame detector.
2. Position flame detector in slot of disc and secure
with screw and lock washer.
3. Tighten screw to 5 Nm - 6 Nm (44 - 53 lb-in.).
4. Swing burner head closed (see Sec. 8.5.1).
Figure 42: Flame Detector Replacement
Nozzle
Nozzle Holder
Flame Detector
Window
Screw
Disc
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