Replacing The Burner, Flame Monitor And Glow Pin; Removal; Installation - Webasto Thermo 90 ST D Service And Repair Manual

REPAIR
9.2.5 R B
EPLACING THE
G P
LOW IN
9.2.5.1 R
EMOVAL
1. Remove the heater (see 8.7.1.1).
2. Remove the combustion air fan (see 9.2.4.1).
3. Remove the screw (5, Fig. 28) and washer (4).
4. Remove the nuts (10) and pull off the bar (8).
5. Pull the grommets (11 and 12) out of the slots in the
housing of the combustion pipe (3).
6. Pull the grommet (13) and burner (1) out of the
burner head and remove with the air swirl plate (2).
7. Pull the flame monitor (7) and glow pin (6) from the
burner (1) and remove.
8. Perform a visual check for assessing the burner
(see 5.4).
9. Complete the work on stripped-down components
(see 9.1.1).
9.2.5.2 I
NSTALLATION
1. Place the air swirl plate (2, Fig. 28) onto the burner
(1).
2. Carefully insert the flame monitor (7) and glow pin
(6) into the burner up to the stop and push the
grommets (11 and 12) into the slots in the housing
of the burner pipe (3).
3. Insert the burner (1) and grommet (13) into the
burner head (3).
Webasto Product N.A., Inc.
, F M
URNER LAME ONITOR AND
CAUTION: During the following
procedure, make sure that the cables of the
flame monitor (7) and the glow pin (6) are
routed as shown in the figure.
Glow pin
4. Push the insulation (9) onto the bar (8) and bring
the bar into the assembly position.
NOTE: Route the cable of the flame monitor
and the glow pin as shown in the figure!
5. Secure the bar (8) using the nuts (10). Tighten the
nuts to 3 Nm (26.5 lb-in) ±10%.
6. Secure the fuel line using the screw (5) and
washer (4). Tighten the screw to 3 Nm (26.5 lb-in)
±10%.
7. Install the combustion air fan (see 9.2.4.2).
8. Plug in any electrical cables removed from the
control unit.
9. Install the heater (see 8.7.1.2).
38
THERMO 90 ST
Flame monitor
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