ENGINE
M6040, M7040, WSM
1-S23
(6) EGR System
Function of EGR System
1. Check the coolant temperature and monitor the coolant
temperature while checking 1) and 2).
2. If the coolant temperature is already 55 °C (131 °F), cool down
the engine.
3. Start the engine and go to check 1) immediately.
4. After completing checking 1), arrange the coolant temperature
is getting over 70 °C (158 °F).
5. If the coolant temperature is over 70 °C (158 °F), go to check 2).
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1) If the coolant temperature is under 55 °C (131 °F), the surface temperature of EGR pipe must be under
150 °C (302 °F).
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(a) Measuring Place of EGR Pipe
Surface Temperature