CUMMINS N14 Especificações descarregar pdf (Página 258)

100

101

Measure the width of the valve seat area of the valve seat

inserts.

Valve Seat Area (Width)

mm in

1.60 MIN 0.063

3.18 MAX 0.125

NOTE: If the valve seat area is worn wider than the maximum

specified, refer to ‘‘Grinding the Valve Seats’’ later in this

procedure or to Cylinder Head - Replacing the Valve Seat

Inserts (02-05).

Perform the following steps to check the injector seating

quality in the injector sleeve and to measure injector

protrusion past the combustion face.

Caution: Support the cylinder head to prevent damage

to the injector tip which protrudes from the combustion

face.

Apply a very light film of blueing compound to the outside

diameter of the injector at the injector seat area. Blueing

compound can effectively be applied with your finger or

with a brush.

Caution: Support the cylinder head combustion face so

that it clears the work surface to prevent damage to the

injector tips during installation.

Install the injectors in the cylinder head without o-rings.

Place a 1.2-inch thick block under the injector hold down

clamp. This represents the rocker housing.

Tighten the injector hold down capscrews.

Torque Value: 54 N•m [40 ft-lb]

(STC and CELECT™)

Turn the cylinder head over and use a depth gauge, Part

No. 3823495, to measure the injector tip protrusion.

Injector Tip Protrusion

mm in

1.47 MIN 0.058

1.82 MAX 0.072

NOTE: If the injector tip protrusion does not meet the spec-

ifications given, the injector sleeve must be machined again.

Cylinder Head - Rebuild (02-02) Cylinder Head

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Comentários a estes Manuais

Jesus Morales 03 Apr 2025 | 23:07:31

Perfect..

CUMMINS N14 Especificações Página 258

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