DETROIT DIESEL 53
Cylinder Liner
1.6.3
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.
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 breakage.
Therefore, even though the taper and out-of-round are
within the specified limits, the glaze and ridge must be
removed by working a hone up and down the full
length of the liner a few times.
Whenever a liner is honed, it should be placed in a
fixture (a scrap cylinder block makes an excellent
honing fixture). However, if it is necessary to hone a
liner in the cylinder block that is to be used in
building up the engine, the engine must be dismantled
Fig. 6 - Cylinder Liner Ridge Due to Wear
and then, after honing, the cylinder block and other
parts must be thoroughly cleaned to ensure that all
Fretting is the result of a slight movement of the liner
abrasive material is removed.
in the block bore during engine operation, which
causes material from the block to adhere to the liner.
The hone J 5902-01, equipped with 120 grit stones
These metal particles may be removed from the
J 5902-14, should be worked up and down, at a speed
surface of the liner with a coarse. flat stone.
of 300-400 rpm, the full length of the liner a few times
in a criss-cross pattern that produces hone marks on a
Install the liner in the proper bore of the cylinder
45o axis. This operation may be performed with emery
block and measure the inside diameter at the various
cloth if a hone is not available.
points shown in Fig. 3. Use cylinder bore gage J 5347
(Fig. 4). which has a dial indicator calibrated in
After the liner has been honed, remove it from the
.0001" increments, as it is rather difficult to obtain
fixture and clean it thoroughly. Then dry it with
accurate measurements with a micrometer. Set the
compressed air and check the entire surface for burrs.
cylinder bore gage on zero in master ring gage J 8385.
Also check the liner for taper and out-of-round.
After honing, the liner must conform to the same
limits on taper and out-of-round as a new liner and
NOTE: Dial bore gage master setting fixture
the piston-to-liner clearance must be within the
J 23059 may be used in place of the master
specified limits (Section 1.0).
ring gage.
To reuse the liner, the taper must not exceed .002" and
Inspect New Cylinder Liner
the out-of-round must not exceed 003". In addition,
the ridge formed at the top of the ring travel must be
Both the former and current liners can be intermixed
removed. If the out-of-round exceeds .003", rotate the
engines.
in In-line
liner 90o in the block bore and recheck.
Install the cylinder liner in the block and measure the
inside diameter at the various points shown in Fig. 3.
Home Used Cylinder Liner
Use dial bore gage J 5347 and set the gage on zero
used cylinder liner must be honed for the following
with master ring J 8385.
A
reasons:
NOTE: Dial bore gage master setting fixture
J 23059 may be used in place of the master
1. To break the glaze (Fig. 5) which results after long
ring gage.
periods of operation.
new cylinder liner is 3.8752" to 3.8767" on the
2. To remove the ridge (Fig. 6) formed at the top by
A
inside diameter and should be straight from top to
the piston ring travel.
bottom within .001" and round within .002" total
indicator reading when the liner is in place in the
When a liner has been in service for a long period, the
SEC. 1.6.3 Page 3
November, 1973
