MAK M 20 - Page 338

RPM Switch
Inspection / Adjust
A5.05. 11.05.01.02
7500
M20/M25/M32/M43
en / 26.11.2010 IB021724 2/2
11
5.1 Supply (24 V DC at contact z16 and z20, contact z20 positive).
5.2 PICK UP IMPULSE (dependent upon engine speed up to 1500 Hz at contact b14 and d14).
If nothing could be detected whilst checking points 4 - 6, renew the plug-in card.The engine speed must be
constant whilst testing.
NOTE
Carry out the rpm adjustment of the new plug-in card. For this see the "Engine Docu-
mentation, Chapter „Control / Regulation“, rpm switch".