Waste Gate Valve Adjustment Procedure - Komatsu 4D98 Series Shop Manual

8. Turbocharger (for 4TNE106T)
l
Rotor play in axial direction
Turtjine wheel chamber
Axial
Service standard
l
Rotor play in radial direction
Dial gage
\
Radial play
I
-
the turbine shaft
axial direction.
: 0.03 to 0.06 mm
: 0.09 mm
1
Move the turbine shaft in the radial
direction at the same time on the
left and right sides.
C
Service standard : 0.08 to 0.13 mm
Wear limit
: 0.17 mm
1
(3) Waste gate valve adjustment procedure
It is indispensable to adjust the waste gate valve opening pressure and lift after its overhaul or
inner parts replacement.
Negligence of this adjustment will adversely affect the engine performance.
r
[NOTICE]
If the adjustment is impossible, give up overhaul but replace the whole turbocharger assembly.
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