CUMMINS N14 Especificações descarregar pdf (Página 282)

100

101

Use a stopwatch. Start timing when the needle on the

gauge indicates 457 mm-Hg [18 in.Hg].

Stop timing when the needle on the gauge indicates 203

mm Hg [8 in.Hg].

The elapsed time for the needle to move between the

specified gauge readings must be 10 seconds or more.

If the elapsed time is less than 10 seconds, perform the

following checks:

• Repeat the test to make sure the equipment is op-

erating correctly.

• Use a mallet to lightly hit the valve stem to make sure

the valve is seated. Repeat the test.

• Apply a thin layer of grease on the outside diameters

of the insert and the valve head. Repeat the test.

The grease pattern will show the point of leakage.

NOTE: A break in the grease seal pattern will indicate leak-

age between the valves and the valve seat or the valve seat

insert and the cylinder head. Refer to Cylinder Head - Re-

build (02-02).

Cylinder Head - Valves - Magnetic

Crack Inspection (02-11)

Refer to the Alternate Repair Manual, Bulletin No.

3379035, for procedures to magnetically check for cracks

in the intake and exhaust valves.

Cylinder Head - Valves - Magnetic Crack Inspection (02-11) Cylinder Head

N14Page 2-40

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Comentários a estes Manuais

Jesus Morales 03 Apr 2025 | 23:07:31

Perfect..

CUMMINS N14 Especificações Página 282

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