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 TM 55-1905-217-34
(7) To reuse the liner, the taper must not exceed .002 inch and the out-of-round must not exceed .003
inch. In addition, the ridge formed at the top of the ring travel must be removed. If the out-of-round exceeds
.002 inch, rotate the liner 90in the block bor, and recheck. A service liner is available only with a standard
inside diameter of 4.2495 inches to 4.2511 inches.
d. Honing Used Cylinder Liner. A used cylinder liner must be honed. To break the glaze which results
after long periods of operation and to remove the ridge formed at the top, by the piston ring travel.
(1) When a liner has been in service for a long period, the bore becomes very smooth or glazed due to
the rubbing action of the piston rings. Unless this glaze is removed, the time required to seat new piston rings
will be lengthened.
(2) The ridge formed at the top of the liner by the travel of the piston rings must also be removed.
Otherwise, interference with the travel of the new compression rings may result in ring
Figure 3-77. Cylinder liner measurement diagram.
3-106
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