Service Manual

Exhaust Manifold, Dry ISB, ISBe and QSB (Common Rail [...]
Page 11-4 Section 11 - Exhaust System - Group 11
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Install
Apply high-temperature anti-seize compound to the
exhaust manifold capscrew threads.
Install the exhaust manifold, new gaskets, spacers, and
lockplates.
Follow the tightening sequence shown in the illustration.
NOTE: To aid in alignment of the exhaust manifold, two
capscrew passages have a smaller diameter than other
passages. The location of these varies with manifold
configuration. The capscrews in the smaller passages
should be tightened first, with the remaining capscrews
tightened in a sequence like the pattern shown in the
illustration.
For QSB6.7 CM850 engines:
Tighten the exhaust manifold mounting capscrews.
Torque Value: 53 N•m [ 39 ft-lb ]
For all other engines:
Tighten the exhaust manifold mounting capscrews.
Torque Value: 43 N•m [ 32 ft-lb ]
Finishing Steps
Without EGR
Install the turbocharger. Refer to Procedure 010-033 in
Section 10.
Connect the turbocharger air inlet and exhaust piping.
Connect the charge air cooler piping. Refer to Procedure
010-019 in Section 10.
Operate the engine and check for leaks.