Aircraft Technical Manual
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
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Hot air mixer boxes must be inspected for conditions and to make sure they are clean and dry inside.
Ensure that the carburettor heat valve is operating correctly.
SCAT hoses must be inspected for condition and replaced if they are ripped etc.
Visually inspect the system looking for rubbing, wear, damage or corrosion.
For installation, reverse the procedure given above.
WARNING
Incorrect function of carburettor heat valve can lead to engine failure. Ensure flap of valve is
securely attached to shaft, moves with it correctly and seals when in position.
Figure 151 – Typical Carburettor Heat Box (all J-Series)