DIAGNOSTICS
3-4
©
200416
CE engine inlet/exhaust system
1
ΧΦ65/75/85 series
4
SYMPTOM: EXHAUST GAS BACK PRESSURE TOO HIGH
Possible cause Remedy
Incorrect butterfly valve adjustment Check the adjustment of the butterfly valve
Butterfly valve incorrectly positioned Check whether the butterfly valve has been posi-
tioned correctly
Butterfly valve partially operated by residual pres-
sure in the operating cylinder Check operating cylinder
Original exhaust silencer not fitted Check exhaust silencer
Exhaust pipe crushed or internally blocked by a
loose part
Check exhaust system for blockage and/or dam-
age
SYMPTOM: INLET UNDERPRESSURE TOO HIGH
Possible cause Remedy
Air filter element blocked Replace air filter element
https://www.truck-manuals.net/
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