PREVOST H3-41 Maintenance Manual page 62

SECTION 01 : ENGINE
Prior to an actual automatic shutdown, the
engine will automatically derate, go to idle, and
then stop in 30 seconds.
ENGINE PROTECTION LOGIC (with yellow
CHECK or red STOP telltale light)
High engine coolant temperature
High engine oil temperature
Low engine oil pressure
High crankcase pressure (rate of
change)
Low coolant level
High intake manifold
temperature
High transmission oil temperature
High temperature of
exhaust gas (EGR) - after EGR
cooler
EGR valve and position error
Variable Geometry Turbo (VGT)
valve and position error
26
PA1621 Maintenance Manual All Series | Section 01 revised Feb 2019
Shutdown
Shutdown
Shutdown
Shutdown
Derate only
air Derate only
Derate only
cooled Derate only
Derate only
Derate only
High VGT actuator temperature
High pre-Diesel
Catalyst (DOC) temperature
High Compressor
Temperature (CDT – measured)
High soot load
High Diesel Particulate
(DPF) pressure differential (DP)
OUTSIDE ENGINE PROTECTION LOGIC (no
yellow CHECK or red STOP telltale light)
High altitude (ensures that high
compressor discharge temp. is
never reached)
Turbo over-speed
Low coolant temperature
Crank sensor failure
High crankcase pressure
Absolute Pressure
Derate only
Oxidation Derate only
Discharge Derate only
Derate only
Filter Derate only
Derate only
Derate only
Derate only
Derate only
- Shutdown