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The turbine housing (right) is held to the bearing housing (middle) by a
press fitting and a ring which you can see loose between the two housings. There are
4 bolts that tap into the turbine housing (3 visible here, the fourth behind the turbo)
which tighten the ring down and hold the sections together. To loosen the turbine
housing, you must loosen all 4 bolts (but do not remove). The one next to the oil
drain flange will butt up against that flange. Use this as leverage to pop the
turbine housing free by backing out the bolt against the flange. When it is free,
you will be able to rotate the turbine housing 360 degrees with respect to the other
housings, but we only want about 10-15 degrees as explained below. |
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Here is a view of the complete assembly from the compressor housing
side. Once the turbine housing is loose, rotate it so the exhaust manifold flange
(horizontal red line) is perpendicular to the compressor outlet (vertical red line).
As you can see, I have it slightly counter-clockwise from perpendicular which seems to
work fine. It's not critical to get it exactly perpendicular, but close. Once
the compressor housing is lined up, this should also make the oil fittings vertical on the
bearing section. The oil fittings can be located by the flanged fitting seen above
and the inverted flare fitting on the opposite side. The coolant fittings are the
remaining two metric pipe thread fittings. |
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A view of the complete assembly from the front... |
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...from the back... |
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...from the bottom... |
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...and from the top. Here we can see the bolts through the manifold
mounting holes threaded into the adapter. And, if you look close just in front of
the manifold, you can see the cap screws counter-sunk into the adapter plate which thread
into the existing turbo flange mounting holes. |