Komatsu WA800-1 Operation & Maintenance Manual page 101

EVERY 2000 HOURS SERVICE
g. TURBOCHARGER ROTOR PLAY
Contact your Komatsu distribu-
tor for checking, or proceed as
follows:
Remove air intake pipe from
turbocharger.
1. Axial play
Check axial play by moving rotor
in axial direction.
Play:
Standard
0.08 - 0.18 mm
2. Radial play
Measure radial play by moving
rotor holding both ends by hands
in radial direction in parallel.
Play:
Standard 0.25 - 0.60 mm
f If the rotor is excessively soiled
with dust or carbon or if any oil
leakage caused by turbocharger
trouble is noted, have the tur-
bocharger repaired by your
Komatsu distributor.
h. TURBOCHARGER
Excessive carbon or oil sludge ad-
hering to turbocharger blower im-
peller may lead to deterioration of
normal charger performance, and
possible damage. Have turbocharger
cleaned by Komatsu distributor.
1. Remove the turbocharger oil filler
pipe and drain pipe, then remove
the intake air pipe connector and
blower housing so that the
blower impeller can be seen.
2. Using light oil as a cleaning
agent, remove the carbon, sludge
and other dirt from the blower
impeller. Do not use a wire brush
or other tool which may damage
the impeller.
3. Pour in light oil through the tur-
bocharger oil filler and rotate the
blower impeller several times to
wash out the sludge.
4. Rotate the impeller by hand at
least one turn at speed to check
that there is contact noise or
catching inside.
If the impeller does not turn
smoothly, contact your Komatsu
distributor
for
repair or
replacement.
5. If there is no abnormality, dry off
the light oil with compressed air
after inspection, then add engine
oil.
w-04311
-
101 -