Diagnostic Information And Procedure; Oil Leak Diagnosis; Finding The Leak; Repairing The Leak - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

DIAGNOSTIC INFORMATION AND PROCEDURE

OIL LEAK DIAGNOSIS

Most fluid oil leaks are easily located and repaired by vi-
sually finding the leak and replacing or repairing the nec-
essary parts. On some occasions a fluid leak may be dif-
ficult to locate or repair. The following procedures may
help you in locating and repairing most leaks.

Finding the Leak

1. Identify the fluid. Determine whether it is engine oil,
automatic transmission fluid, power steering fluid, etc.
2. Identify where the fluid is leaking from.
2.1 After running the vehicle at normal operating
temperature, park the vehicle over a large sheet
of paper.
2.2 Wait a few minutes.
2.3 You should be able to find the approximate
location of the leak by the drippings on the
paper.
3. Visually check around the suspected component.
Check around all the gasket mating surfaces for
leaks. A mirror is useful for finding leaks in areas that
are hard to reach.
4. If the leak still cannot be found, it may be necessary
to clean the suspected area with a degreaser, steam
or spray solvent.
4.1 Clean the area well.
4.2 Dry the area.
4.3 Operate the vehicle for several miles at normal
operating temperature and varying speeds.
4.4 After operating the vehicle, visually check the
suspected component.
4.5 If you still cannot locate the leak, try using the
powder or black light and dye method.
Powder Method
1. Clean the suspected area.
2. Apply an aerosol-type powder (such as foot powder)
to the suspected area.
3. Operate the vehicle under normal operating
conditoins.
4. Visually inspect the suspected component. You
should be able to trace the leak path over the white
powder surface to the source.
ENGINE ASSEMBLY
DI ENG SM - 2004.4
Black Light and Dye Method
A dye and light kit is available for finding leaks, Refer to
the manufacturer's directions when using the kit.
1. Pour the specified amount of dye into the engine oil
fill tube.
2. Operate the vehicle normal operating conditions as
directed in the kit.
3. Direct the light toward the suspected area. The dyed
fluid will appear as a yellow path leading to the
source.

Repairing the Leak

Once the origin of the leak has been pinpointed and traced
back to its source, the cause of the leak must be deter-
mined in order for it to be repaired properly. If a gasket is
replaced, but the sealing flange is bent, the new gasket
will not repair the leak. The bent flange must be repaired
also. Before attempting to repair a leak, check for the fol-
lowing conditions and correct them as they may cause a
leak.
Gaskets
• The fluid level/pressure is too high.
• The crankcase ventilation system is malfunctioning.
• The fasteners are tightened improperly or the threads
are dirty or damaged.
• The flanges or the sealing surface is warped.
• There are scratches, burrs or other damage to the
sealing surface.
• The gasket is damaged or worn.
• There is cracking or porosity of the component.
• An improper seal was used (where applicable).
Seals
• The fluid level/pressure is too high.
• The crankcase ventilation system is malfunctioning.
• The seal bore is damaged (scratched, burred or nicked).
• The seal is damaged or worn.
• Improper installation is evident.
• There are cracks in the components.
• The shaft surface is scratched, nicked or damaged.
• A loose or worn bearing is causing excess seal wear.
DI01-15
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EFFECTIVE DATE
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