806
Thermo G
8 Repair
8.10 Combustion chamber removal and
installation
Removal
Combustion chamber and heat exchanger can be
very hot. If necessary, let them cool down.
1. Remove burner head (see 8.4).
2. Pull combustion chamber (1, Fig. 805) out of the heat
exchanger (2).
Installation
1. Slide combustion chamber (1, Fig. 805) until stop into
the heat exchanger (2).
HINWEIS:
–
The combustion chamber should be inserted into
the heat exchanger in such a way that its welding
seam is positioned between 2 and 10 o clock (not
upwards!). A position change during mainte-
nance is permissible and affects the expected
service life of the combustion chamber positively.
2. Install burner head (see 8.4).
8.11 Heat exchanger removal and
installation
Combustion chamber and heat exchanger can be
very hot. If necessary, let them cool down.
Removal
1. Remove burner head (see 8.4).
2. If necessary, remove temperature sensor (see 8.2).
3. Pull combustion chamber (1, Fig. 805) out of the heat
exchanger (2) (see 8.10).
4. If necessary, loosen the exhaust line clamp on the
exhaust outlet (3).
5. If available, close water taps.
Prior to disconnecting the coolant houses, the over-
pressure in the cooling system must be released (i.e.
by opening the radiator cap). Observe the risk of inju-
ries due to increased coolant temperature. Possibly
let heater additionally cool down and have collecting
container ready for discharged coolant.
6. Loosen hose clamps on the coolant hoses, pull
coolant hoses from the coolant inlet (5) and the
coolant outlet (6) and seal with blank plugs.
7. Remove screws and washers at the heat exchanger
stand (4).
8. Remove heat exchanger from the vehicle.
Installation
1. Bring the heat exchanger (2, Fig. 805) into installation
Fig. 805 Combustion chamber removal and installation
Risk of burns!
Caution!
2
1
1
Combustion chamber
2
Heat exchanger
3
Exhaust outlet
4
Stand
5
Coolant inlet
6
Coolant outlet
5
6
4
4
3
Fig. 806 Combustion chamber welding seam position
permissible
not permissible
Risk of burns!
Caution!
Risk of scalds!
Caution!
