8-21
Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Inlet and Exhaust Systems
Turbocharger - Inspect
Disconnect the pipe on the inlet side. Hold the com-
pressor wheel nut by hand and move in the axis direc-
tion and from right to left and up and down to check
looseness. Turn the wheel to check if it rotates
smoothly. Replace if there is looseness or the wheel
does not rotate smoothly.
Note: When the inspection requires the removal of tur-
bocharger, contact your local dealer.
Also check the compressor wheel fins for discol-
oration and breaks, and check for rubbing be-
tween compressor wheel and housing.
Fig. 8-27 Turbocharger - Inspect
Pre-cleaner - Clean, Inspect and Replace
The pre-cleaner, which is attached to the silencer of
the turbocharger, prevents foreign materials from
entering the engine and keeps the engine clean for
optimum performance. Always keep it clean as
instructed below.
1. Remove the pre-cleaner from the silencer, and
hand-wash the pre-cleaner with a mild detergent.
2. Rinse the pre-cleaner with fresh water.
3. After drying thoroughly, inspect the pre-cleaner for
damage such as breaks. If breaks or etc. are found,
replace the pre-cleaner with a new one.
4. After cleaning, inspection or replacement, install
the pre-cleaner to the silencer.
Fig. 8-28 Pre-cleaner - Clean
Inspect the turbocharger when the engine is cold.
Also, make sure that the compressor wheel is not
rotating.
The turbocharger inspection should be also con-
ducted if the color of the exhaust gas is abnormal.
Never remove pre-cleaners during engine operation
for cleaning or overhauling. If dust and dirt enter the
engine, it will cause rapid wear of parts, shortening
the service life of the engine.
Water
(Wash)
(Dry)
Install
(Rinse)
Mild
detergent
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