TM 9-4310-397-14
(e)
Measure camshaft bore diameter. New diameter is 2.204 - 2.205 in. (55.99 - 56.01 mm).
(f)
If diameter is more than specified, install a new cylinder block.
(g)
New camshaft journal clearance (journal diameter minus bearing diameter) is 0.003 - 0.005 in. (0.08 -
0.13 mm). Maximum clearance is 0.006 in. (0.15 mm).
(h)
Measure cylinder block top deck flatness. New flatness is 0.003 in. (0.08 mm). If flatness is not as
specified, resurface cylinder block.
CAUTION
When cylinder block is machined (top deck or crankshaft bearing bores), the
dimension from centerline of crankshaft bearing bore to top deck will be changed.
Make sure that this dimension will not be less than 11.889 in. (301.98 mm).
Otherwise, piston may contact cylinder head. If cylinder block top deck is
resurfaced, also measure depth of liner counter bores. Bore depth must be within
0.2343 - 0.2357 in. (5.95 - 5.99 mm).
(i)
Inspect each cooling orifice to make sure it is not plugged or damaged. Cooling orifices deliver
approximately 0.4 GPM (0.025 L/s) oil flow.
(j)
Use a soft wire and compressed air to clean orifice. Replace, if condition is questionable.
CAUTION
A piston cooling orifice failure could cause damage to pistons, piston pins, rod
pin bushings, and liners. If a piston cooling orifice is left out at reassembly, low
or no oil pressure will result.
(k)
Install orifices and torque to 84 lb-in. (10 Nm).
(8)
Recheck cylinder liner height.
NOTE
If liner height was not checked when liners were removed (see Remove Cylinder
Liners earlier in this paragraph), or a new liner is being installed in a new or used
cylinder block, liner height must be checked.
(a)
Be sure liner bore in cylinder block is clean.
(b)
Install liners without preformed packing and packing.
NOTE
Liner should rotate smoothly by hand when installed. If not, remove liner and
polish bottom liner pilot bore in cylinder block with emery cloth. Use a shop
towel or other suitable means to collect debris when polishing bore.
(c)
Measure liner height at four locations, each liner. Liner height specification is 0.0004 - 0.004 in. (0.01-
0.10 mm). Maximum permissible difference between readings within one cylinder or between adjacent
cylinders is 0.002 in. (0.06 mm).
(d)
If liner height is above specification, check cylinder block for burrs on liner support flange or incorrect
counterbore depth.
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