Banks Power 2001-2004 (LB7) Chevy_GMC 6.6L Duramax Turbo-Diesel Pickups - Manual (Page 8)

25.
The thermocouple monitors
the temperature of the exhaust
gases entering the turbocharger
at the turbine housing. Installation
requires that the exhaust manifold
be drilled near the manifold outlet. It
is recom-mended that the manifold
be removed from the engine to
thoroughly clean out all metal chips
from drilling. If manifold is not
removed from the vehicle, all chips
must be removed from the manifold.
This may be accomplished by using
a magnet to extract the chips after
drilling. The tap should be greased
before use and the chips again
removed with a magnet. All metal
shavings must be cleaned from the
manifold to avoid turbine damage.
26.
To access the exhaust manifold,
remove front passenger wheel well
by removal of plastic retainers.
27.
On the passenger side, remove
the hardware retaining the turbine
inlet exhaust pipe to the exhaust
manifold using a 12mm, 12pt and 1 ⁄ 2 ”
drive socket along with a 12mm, 12pt
wrench. Remove the exhaust manifold
from vehicle. Pay special attention
to the orientation of the turbine inlet
gasket. Retain the hardware and
gaskets for re-assembly.
28.
center punch and drill through
the passenger side exhaust manifold
into the rear passage at the location
shown (see Figure 4). Use a 7 ⁄ 16 ”
drill, keeping the drill perpendicular
to the manifold surface.
29.
Tap the drilled hole with a 1 ⁄ 4 ”
NPT pipe tap. check the thread depth
as you tap by periodically removing
the tap and screwing the thermo-
couple insert into the tapped hole.
30.
Install the thermocouple insert
into the manifold using anti-seize on
the threads. Install the probe in the
thermocouple insert.
31.
Make sure to remove all
shavings from inside the exhaust
manifold. Reinstall the exhaust
manifold. Torque to 28 ft-lb in the
sequence shown (see Figure 4).
-END, SEcTION 2-
Section 2
THeRMoCouPLe INSTALLATIoN
Figure 4
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