Engine: Motor Plants and Auxiliary Boilers

1. A The unit shown is used to prevent starting of the main engine when the turning gear is engaged.
2. B The three-position valve prevents the fuel flow from reaching the fuel injection pumps.
3. C This unit controls the air-operated turning motor exhaust when the unit is in operation.
4. D The shuttle valve compensates for any decrease in the operator's physical abilities.

Tip: press A-D to answer