Yanmar 4LHA-HTP Operation Manual page 497

Chapter 4 Intake and Exhaust System
4. Turbocharger
(3) installation of thrust bearing
1) Fit thrust bushing (5) on turbine shaft © .
2) Apply engine oil to the bearing portion of thrust
bearing@and install it in bearing housing®.
3) Apply Locktite on the threaded portion of M4
TORX T screw bolt % used for mounting thrust
bearing and install it to the specified torque using
the TORX torque screwdriver.
Tightening torque:
3.73+0.3N-m(38±3kgf-cm)
(4) Installation of turbine housing
1) Install bearing housing @ to turbine housing @,
aligning match
assembly.
- [NOTICE]
If the parts are replaced, install while
confirming the oil inlet and outlet positions
and the exhaust gas inlet position.
Tighten M8 TORX bolt @ using the TORX torque
wrench.
Tightening torque:
27.95+1 N-m(285±10kgf-cm)
(5) Installation of seal plate
Fit seal ring © to oil thrower (3).
D
2) Insert oil thrower (3) into seal plate (Q).
Note: Position the seal ring end on the oil inlet
side.
3) Apply the liquid gasket (Three Bond No.1207) on
the flange surface of seal plate © on the turbine
side.
Note: See the figure on the right for the applying
position.
Liquid gasket thickness: 0.1 to 0.2 mm
4) Install seal plate © to bearing housing®.
Apply Locktite on the threaded portion of M8
5)
TORX bolt®for seal plate mounting, and tighten
it with the torque wrench.
Tightening torque:
22.56+1 N-m(230±10kgf-cm)
marks marked before dis-
Liquid gasket
applying position
Applying liquid gasket to seal plate
and compressor housing
4-20
4LHA Series
'
' T
2 ^
5 ^
Carefully prevent the
liouid gasket from leaking
out to this area.