Cleaning And Inspection Of Air Cleaner Element; Check For Cracks And Gas Leakage In Exhaust Manifold; Check For Cracks And Gas Leakage In Turbocharger - Mitsubishi 6M70 Workshop Manual

ON-VEHICLE INSPECTION AND ADJUSTMENT

2. Cleaning and Inspection of Air Cleaner Element

3. Check for Looseness in Intake Manifold Mounting Bolts and Nuts
• Check for looseness in the intake manifold and air inlet pipe mounting bolts and nuts. If there is looseness, tighten
the bolts and nuts to the specified torque. (See "INTAKE MANIFOLD".)

4. Check for Cracks and Gas Leakage in Exhaust Manifold

• Inspect the exhaust manifold visually. If there is any trace of gas leakage or cracks, replace the exhaust manifold.
(See "EXHAUST MANIFOLD".)
• Check for looseness in the exhaust manifold mounting nuts. If there is looseness, tighten the nuts to the specified
torque. (See "EXHAUST MANIFOLD".)

5. Check for Cracks and Gas Leakage in Turbocharger

• Inspect the turbocharger visually. If there is any trace of gas leakage or cracks, replace the turbocharger. (See
"TURBOCHARGER".)
• Check for looseness in the turbocharger mounting bolts and nuts. If there is looseness, tighten the bolts and nuts
to the specified torque. (See "TURBOCHARGER".)
15-12
[Cleaning: Element]
• Blow a jet of compressed air at a pressure not higher than 685
2
kPa {7 kgf/cm } against the inside surfaces of the element.
CAUTION
• For the frequency and timing of cleaning, refer to the rele-
vant instruction manual. More frequent cleaning than nec-
essary could damage the element or cause dust and foreign
matter to be sucked into the engine.
• Do not strike the element or hit it against another object to
remove dust.
• Do not blow compressed air against outside surfaces of the
element.
[Inspection: Element]
• Shine some electric light inside the element.
• Replace the element if thin spots or broken parts are evident in
the filter paper, or if the packing at the top of the element is dam-
aged.
Also replace the element if the dust on the element is damp with
oily smoke or soot, regardless of the replacement schedule.