Assembling Heater

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When ordering spare parts, bear in mind that there are different repair sets and sealing sets for diesel and petrol heaters.

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Check components for damage. Pay particular attention to the sealing faces on the components and any seals that may be stuck on.
Replace components with damaged sealing faces or seals.

Fig 1: Heater Component Location
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Component overview of heater

Assembly is performed in reverse order. Pay particular attention to the following:

Clean the various components before assembly.
Replace any seals.
Tighten all screws to the prescribed tightening torque.
1. 3.1 Screws -1- securing cover for electric motor to combustion air blower > Tightening torque 3 Nm (2 ftlb.)
2. 3.2 Screws -3- securing cover to combustion air blower > Tightening torque 3 Nm (2 ftlb.)
3. 3.3 Screws -8- securing cover for control unit to heat exchanger housing > Tightening torque 3 Nm (2 ftlb.)
4. 3.4 Screws -11- securing retaining clip to heat exchanger housing > Tightening torque 3 Nm (2 ftlb.)