Detroit Diesel MBE 4000 Service Manual page 84

1.3 CYLINDER BLOCK
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3. Measure the wear on the inside diameter of the liner at measuring point 2: the upper
reversal point of the first piston ring. Measure the cylinder liner in both directions:
fore-to-aft and side-to-side. See Figure 1-25. The specifications are listed in Table 1-10.
1. Cylinder Liner
Figure 1-25
[a] Make the first measurement along the fore-to-aft axis (axis A).
[b] Make the second measurement 90 degrees away, along the side-to-side axis (axis B).
[c] If there is more than 0.08 mm (0.003 inch) of wear, replace the cylinder liner.
4. Check the cylinder liner for out-of-round. If the two measurements vary by more than
0.010 mm (0.0004 in.), replace the cylinder liner.
5. Replace the cylinder liner, if required. Refer to section 1.3.1.
1.3.2.2 Cylinder Liner Protrusion Measurement
Measure the cylinder liner protrusion as follows:
1. Remove the cylinder head. Refer to section 1.2.1.
NOTE:
Correct liner protrusion is necessary to obtain a perfect seal when the head gasket is
compressed by the cylinder head.
2. Clean the contact surfaces of the cylinder block, the cylinder liner, and the measuring plate.
1-36
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Measuring Points
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2. Measuring Point 2 (upper reversal point of the first
piston ring)
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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