Technical data

35
Repair step 8
Dismantle combustion chamber
(seeFigure9andSketch6)
• Repairstep3.
• Repairstep7.
• Unscrewthefixingscrews.
 IntheAirtronic=3fixingscrews,
 intheAirtronicM=4fixingscrews.
• Pulloutthecombustionchamberfromthefrontandremove
theheatexchanger’sseal.
Caution!
Whenassemblingthecombustionchamber,alwaysrenewthe
seal,whichisincludedwiththesparepart.
Tightenthefixingscrewsofthecombustionchamberwitha
tighteningtorqueof5+0.5Nm
Iftheheatexchangerisreplacedthecombinationsensor
(overheatingsensor/flamesensor)mustbedismantledand
fittedonthenewheatexchanger(seeRepairstep6,Page
33).
Sketch6
1Combustionchamber
2Alwaysrenewthesealbetweenthecombustionchamber
andtheheatexchanger.
3Heatexchanger
4Fixingscrew
 Airtronic=3fixingscrews
 AirtronicM=4fixingscrews
Figure9
 Combustionchamber
 Heatexchanger
 Fixingscrew
Airtronic=3fixingscrews
AirtronicM=4fixingscrews



5
4
1
2
3
 Repairinstructions
Please note!