N14 Base Engine Troubleshooting and Repair Manual – 011-007   Exhaust Manifold, Dry

Remove the turbocharger. Refer to Procedure

010-033-002.

Remove two capscrews, and install two guide studs.

WARNING  Because this assembly weighs more than 23 kg [50 lbs], two people or a hoist will be required to lift the exhaust manifold assembly to avoid personal injury.

Remove the remaining ten capscrews, the exhaust manifold assembly, and the manifold gaskets.

NOTE: Two dowels are used in each cylinder head to align the exhaust manifold assembly.

Remove the exhaust manifold end sections.

Use a 240 grit emery cloth to remove carbon deposits from the sealing surfaces.

Steam clean and dry with compressed air.

Visually inspect for cracks or damage.

Visually inspect the manifold seal bore for wear.

Install the exhaust manifold end sections to the center section.

NOTE: The exhaust manifold sections

must
be assembled on a flat surface for proper alignment.

Install two guide studs.

Use an adhesive or heavy grease to hold the gaskets in place on the cylinder head.

NOTE: The side of the gasket marked “OUT”

must
be away from the cylinder heads.

Special capscrews with spacers are required for this particular manifold.

Do

not
use short capscrews.

WARNING  Because this assembly weighs more than 23 kg [50 lbs], two people or a hoist will be required to lift the exhaust manifold assembly to avoid personal injury.

Install the exhaust manifold and ten capscrews.

Remove the guide studs, and install the remaining two capscrews.

NOTE: To aid in future capscrew removal, apply a film of high temperature anti-seize compound to the capscrew threads.

Tighten the capscrews in the sequence shown to 47 N•m [35 ft-lb]. Repeat the sequence and tighten the capscrews to a torque value of 81 N•m [60 ft-lb].

Install the turbocharger. Refer to Procedure

010-033-026.

Operate the engine and check for leaks and engine operation.