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6.22.2 Limit switch for start interlock ‒ Check
from MTU 12V4000M23F_ 12V4000M23S_ 16V4000M23F_ 16V4000M23S_ MS150068_01E Diesel Engine Operating Instruc
Preconditions
☑Engine is stopped and starting disabled.
Note: In the OFF position, the limit switch initiates a start interlock, i.e. the engine cannot be started. Checking limit switch for start interlock
1. Check whether switches (3) and guard plate (1) with engine support (4) are installed on both sides of flywheel housing (2). 2. Check whether both switches (3) are actuated. 3. If switches (3) and/or guard plate (1) with engine support (4) is/are not installed: • Screw on guard plate (1) with engine support (4). • Then screw on switch (3), ensuring that the switch (3) is actuated by the guard plate (1). 4. If switch (3) and guard plate (1) are installed, but switch (3) is in the OFF position: • Make certain that the guard plate (1) at the side of the switch (3) is not distorted. • Release guard plate (1) and screw on such that the switch (3) is actuated.