SsangYong Korando III (2010 year). Manual — part 46

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2) Inspection of Turbocharger

On-board Inspection

1.

Check the bolts and nuts foe looseness or missing

Check the intake and exhaust manifold for looseness or damage

Check the oil supply pipe and drain pipe for damages

Check the housing for crack and deterioration

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Inspection of turbine

2.

Remove the exhaust pipe at the opening of the turbine and check, with a lamp, the existence of

interference of housing and wheel, oil leakage and contamination (at blade edge) of foreign

materials.

Interference: In case where the oil leak sign exists, even the small traces of interferences on the

turbine wheel mean, most of times, that abrasion has occurred on the journal bearing. Must

inspect after overhauling the turbocharger.

Oil Leakage: Followings are the reasons for oil leakage condition

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Problems in engine: In case where the oil is smeared on inner wall section of the exhaust gas

opening.

Problems in turbocharger: In case where the oil is smeared on only at the exhaust gas

outlet section.

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When problem occurs with the turbocharger, it could cause engine power decline,

excessive discharge of exhaust gas, outbreak of abnormal noise and excessive

consumption of oil.

Idling for long period of time can cause oil leakage to the turbine side due to low pressure of

exhaust gas and the rotation speed of turbine wheel. Please note this is not a turbocharger

problem.

Oil Drain Pipe Defect

In case where oil flow from the turbocharger sensor housing to the crank case is not smooth would

become the reason for leakage as oil builds up within the center housing. Also, oil thickens (sludge)

at high temperature and becomes the indirect reason of wheel hub section. In such case, clogging

and damage of the oil drain pipe and the pressure of blow-by gas within the crank case must be

inspected.

Damages due to Foreign Materials

When the foreign materials get into the system, it could induce inner damage as rotating balance of

the turbocharger gets out of alignment.

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06-6

3) Inspection of Turbine

Thoroughly check the followings.

Interference: In case where is trace of interference or smallest damage on the compressor wheel

means, most of times, that abrasion has occurred on the journal bearing. Must inspect after the

overhaul.

Oil Leakage: The reason for oil leakage at the compressor section is the air cleaner, clogged by

substances such as dust, causes the compressor inlet negative pressure.

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Rotating in high speed at no-load for extended period of time can cause oil leakage to the

compressor section as oil pressure within the center housing gets higher than pressure within the

compressor housing.

Overuse of engine break (especially in low gear) in down hill makes significantly low exhaust gas

energy compared to the time where great amount of air is required during idling conditions of the

engine. Therefore, amount of air in the compressor inlet increases but the turbocharge pressure

is not high, which makes negative pressure at the compressor section causing the oilleakage

within the center housing.

a.

b.

No problem will occur with the turbocharger if above conditions are found in early stage but oil

leaked over long period of time will solidify at each section causing to breakout secondary

defects.

Damages by foreign materials: In case where the compressor wheel is damaged by foreign materials

requires having an overhaul. At this time, it's necessary to check whether the foreign materials have

contaminated intake/exhaust manifold or inside of engine.

Must absolutely not operate the turbocharger with the compressor outlet and inlet opened

as it could damage the turbocharger or be hazardous during inspection.

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4) Possible Causes of Defect

The following tries to understand the defects that can occur with vehicle installed with the turbocharger

and to manage the reasons of such defects.

In case where oil pan/oil pipe has been contaminated, oil filter is defected and where adhesive of

gaskets has been contaminated into the oil line.

1.

06-8

Oil Pump Defect: Rapid over-loaded driving after replacing oil filter and oil and clogging of oil line.

2.