802
Thermo G
8 Repair
8.3
Hood removal and installation
Removal
1. Disconnect the heater from the vehicle electrical
system.
2. Loosen screws (3, Fig. 802).
3. Remove hood (4).
Installation
1. Place hood (4, Fig. 802) into installation position.
Ensure center alignment and proper fit.
2. Insert screws (3) and tighten with 2 Nm + 0.5 Nm.
3. Connect the heater to the vehicle electrical system.
8.4
Burner head Removal and installation
Burner head removal
1. Disconnect the heater from the vehicle electrical
system and from the circulating pump as needed.
2. Disconnect the temperature sensor plug (5, Fig. 802).
3. If necessary, disconnect the combustion air intake line
from the heater.
4. Disconnect gas supply hose and seal it with a blank
plug.
5. Unscrew nuts (2).
6. Remove burner head (1).
Burner head installation
1. Bring burner head (1, Fig. 802) together with a new
gasket ring (6) into assembly position. Ensure center
alignment and correct fit of the gasket.
2. Place nuts (2) and alternately tighten them slightly.
3. Tighten nuts (2) with 7.5 + 1 Nm and apply screw
locking paint.
4. Remove blank plug from gas supply hose and
reconnect gas supply hose to the heater.
5. If necessary, reconnect the combustion air intake line
to the heater.
6. Reconnect the temperature sensor plug (5).
7. Connect the heater with the vehicle electrical system
and the circulating pump as needed.
Fig. 802 Burner head / hood removal and installation
1
Burner head
2
Nuts (2)
3
Screws (2)
4
Hood
5
Temperature sensor plug
6
Gasket heat exchanger
7
Heat exchanger with
combustion chamber
1
2
3
4
5
6
7
