Check the indicator scale of the TCMT according to figure 85 - 99 and repeat turning the
engine according to the described checking sequence:
• Checking sequence
• Turn the engine at the propeller two times and adjust it at the first TDC point.
• After 10 seconds (for balancing reasons) check the indicator scale of the TCMT.
• Turn the engine at the propeller for one engine revolution. (3/5 propeller revolution).
• After 10 seconds (for balancing) check the indicator scale of the TCMT.
• Turn the engine at the propeller for one engine revolution. (3/5 propeller revolution).
• After 10 seconds (for balancing) check the indicator scale of the TCMT.
• Turn the engine at the propeller for one engine revolution. (3/5 propeller revolution).
• After 10 seconds (for balancing) check the indicator scale of the TCMT.
• Turn the engine at the propeller for one engine revolution. (3/5 propeller revolution).
85-40-44 Results of the timing chain check
If during the checking sequence described above in one of the check points the last or less of the last
red ring of the indicator scale on the TCMT has been visible, the timing chain and the chain wheel
have to be replaced. Proceed with Chapter 85-40-50 to Chapter 85-40-54.
If more than one red ring of the indicator scale has always been visible, proceed with
Chapter 85-40-45.