CUMMINS N14 Specifications download pdf (Page 189)

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101

The height of the block must not vary more than 0.05 mm

[0.002-inch] from end to end of the block. If the block

height is not within specifications, the top surface of the

block must be machined or the block must be replaced.

NOTE: If the top surface of the block is machined, the ledge

depth of the cylinder liner counterbore must be machined.

Refer to the NH/NT Counterbore Troubleshooting and

Repair Manual, Bulletin No. 3810450, or the N14 Trou-

bleshooting and Repair Manual, Bulletin No. 3810456, for

detailed instructions.

To inspect the cylinder liner counterbore, refer to the

NH/NT Counterbore Troubleshooting and Repair Man-

ual, Bulletin No. 3810450, or the N14 Troubleshooting

and Repair Manual, Bulletin No. 3810456, for complete

instructions.

Coolant Passage - Inspection

Check the water holes. If erosion or pitting is more than

0.08 mm [0.003-inch] deep or extends more than 2.41

mm [0.095-inch] from the edge of the hole, the water hole

must be repaired. Refer to Cylinder Block Machining -

Coolant Passage Repair later in this section for

details.

Cylinder Head Capscrew Holes - Inspection

Inspect the capscrew bosses for cracks or porosity that

extend into the coolant cavities or that have damaged

threads.

Thread repair inserts can be used to fix most cases of

thread damage and minor cracks. Refer to Cylinder Head

Capscrew Hole Repair in Section 1-03.

Cylinder Block Cylinder Block - Cleaning and Inspection (01-02)

N14 Page 1-21

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CUMMINS N14 Specifications Page 189

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