Yanmar 4JH2E Service Manual page 173

Chapter 4 Intake and Exhaust System
2. Turbocharger
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2-5.5 Reassembly
(1) Reassembly of floating metal
1) Mount the inside round A stop ring in the bearing
chamber with stop ring pliers.
2) Fit the floating metal in the bearing chamber.
3) Mount the outside round R stop ring in the bearing
chamber.
NOTE: 1. The round R stop ring opening should be mount-
ed as shown in the illustration. The round part
of the stop ring should be mounted on the
metal.
2. When mounting, coat the floating metal with
engine oil.
(2) Reassembly of the turbine shaft
1) Insert the seal ring in the turbine shaft.
2) Mount the heat shield on the turbine side bearing
chamber.
3) Coat the journal of the turbine shaft with engine oil
and insert from the turbine side of the bearing
chamber.
NOTE: Take adequate care not to scratch the floating
metal with the turbine shaft.
The seal ring opening should face the oil intake
and be inserted aligned with the turbine shaft
center.
(3) Reassembly of the thrust metal
1) Insert the thrust bushing in the turbine shaft.
2) Coat the thrust metal with engine oil and mount it in
the bearing chamber.
3) Put the double grip washers on the thrust metal moun-
ting M3 flat screws and tighten with the torque driver.
Lube oil intake side
45°
Looking from blower side
kg-cm (ft-lb)
Tightening torque
12
~
14 (0.86
~
1.01)
(4) Mounting seal plate
1) Insert the seal ring in the oil drain.
2) Insert the seal plate in the oil drain.
NOTE: The seal ring opening should face the direction in-
dicated in the upperright illustration.
3) Coat the blower side seal plate mounting surface of
the bearing chamber (20) with the liquid gasket (Three
Bond' No.12075 or Three Bond No.1215).
Printed in Japan
A0AJ029-9002
Coat
here
Be careful that the
liquid gasket does
not leak towards
----j..lo==l...::.':!~L--~==-
this area.
4-9
mm(in.)
Coating thickness 0.1
~
0.2 (0.0039
~
0.0078)
NOTE: See the illustration for where to coat it.
4)
Mount the sealing plate on the bearing chamber.
5) Put the double grip washers on the sealing plate
mounting M3 flat screws and tighten with the torque
driver.
kg-cm (ft·lb)
Tightening torque
12
~
14 (0.86
~
1.01)
(5) Mounting blower blade
1) Put the blower blade on the turbine shaft.
2) Tighten the turbine side shaft end nut of the turbine
shaft with a box wrench (10mm (0.3937in.)).
NOTE: The shaft end nut has
a
left handed thread.
kg-cm (ft-lb)
Tightening torque 18 ,....., 22 (1.30 ,...., 1.59)
(6)
Mounting turbine chamber
1) Mount the turbine chamber, aligned with the match
marks made before disassembly.
NOTE: When replacing parts, mount after checking the oil
intake/discharge and exhaust gas intake positions.
2) Lugging
Put on the turbine side retainer plate for lugging and
the bent washer, and tighten with the M6 hex bolt.
Make sure to bend the washer after tightening the M6
hex bolt.
kg-cm (ft-lb)
Tightening torque
105
~
115 (7.59
~
8.31)
(7) Mounting blower chamber
1) Coat the blower side flange surface of the seal plate
with the liquid gasket (Three Bond No.12075 or Three
Bond No.1215).
NOTE: Refer to page (21) for where to coat.
mm(in.)
Coating thickness 0.1
~
0.2 (0.0039
~
0.0078)
2) Align the match marks made before disassembly and
mount the seal plate in the blower chamber.