Intake and exhaust system：
：：
：
1. The maximum vacuum degree at the compressor inlet when new air filter is applied:
Medium-duty diesel engine: 3 kPa (0.03 kgf/cm
2
)
Heavy-duty diesel engine: 3.5 kPa (0.036 kgf/cm
2
)
2. When the vacuum degree at the compressor inlet exceeds 6.5 kPa (0.064 kgf/cm
2
), the air filter canister should be
cleaned or replaced
3. The exhaust pressure at the turbine outlet should not exceed 10 kPa (1kgf/cm
2
). When exhaust brake is applied, the
exhaust pressure limit should be as specified in the operation manual.
4. the exhaust temperature at the turbine inlet should not exceed 700 ℃。
By-pass valve actuator:
1. he set and calibration of the overall pressure of the by-pass valve actuator is done in the special institutions of the
turbocharger manufacturers, and the customers or other people are not authorized to do so.
2. it is strictly forbidden to use the outer pushing rod of the by-pass valve actuator as a handle when moving the
turbocharger, otherwise the flexibility and durability will be affected.
Daily check
Note:
the check should not be done until the engine is cooled down. The engine should not run when the check is in
process to prevent possible casualty.
1. check the pipes connecting the air filter and turbocharger, as well as the turbocharger and intake and exhaust
manifolds.
2. check the fuel inlet and return pipes. Check whether the connecting bolts are loose.
3. check the quality of lubricating oil. Clean or change the canister if necessary.
4. check the air filter. Clean or change the canister if necessary.
5. check the crankcase breather to ensure the pressure in the crankcase is in the normal range.
Periodical maintenance:
The lubricating system, intake and exhaust systems should be maintained periodically according to the
manufacturer’s instruction.
11.03
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