15
GLOSSARY
EN 186
N
Normally Closed, referred to switches (oil-pressure switch).
Normally Opened, referred to switches (Coolant temperature sensor)
P
Fatty and solid substance that may form inside the diesel.
Pipe
cleaner:
An instrument having a metal cylindrical body with bristles that jut outwards. It is
similar to a brush and is used to clean areas that are not easily accessible manually
(e.g. oil ducts inside an engine).
Operation of the engine at high speeds.
PTO:
Power Take Off - a point provided to take advantage of alternative operation
transmission.
R
S
s/n:
Serial number (engine identification name plate) indicating the engine identification
series/chassis number.
Specification, (engine identification name plate) indicating the engine version.
(Standard), base configuration of a component, or a group of components.
T
Top Dead Centre; a moment in which the piston is at the end of its stroke.
valve:
A valve that adjusts the flow of coolant liquid; it is able to operate by means of
temperature variation.
Force applied to an object that rotates on an idler shaft.