TM 5-4310-354-14
KEY
to figure 7-63:
1.
Oil level gauge
15.
Oil pan adapter stud (4)
2.
Oil filler tube
16.
Dowel pin (4)
3.
Cap screw (8)
17.
Oil passage pipe plugs (5)
4.
Lock washer (8)
18.
Pipe plug
5.
Cover (2)
19.
Expansion plug (2)
6.
Gasket (2)
20.
Setscrew
7.
Bearing cap bolts (8)
21.
Cylinder head stud
8.
Front bearing cap
22.
Cylinder head stud (7)
9.
Intermediate bearing cap (2)
23.
Cylinder head stud (2)
10.
Rear bearing cap
24.
Cylinder head stud (2)
11.
Center cap bolt (4)
25.
Cylinder head stud (2)
12.
Center bearing cap
26.
Screw (4)
13.
Bellhousing stud (2)
27.
Ident plate
14.
Gear housing stud
28.
Cylinder block
remove screws (26) and plate (27).
NOTE
Make certain new plate is stamped
with same data as appears on old
Do not remove expansion plugs (19)
plate to retain proper engine
in core openings unless they show
identification.
signs of leaking. Do not remove
studs (13, 14, 15, 21, 22, 23, 24, 25)
b. Cleaning, Inspection, and Repair.
and dowel pins (16) unless damaged
and require replacement. It is not
(1) Clean block by submerging in tank of
necessary to remove pipe plugs (17,
heated cleaning solvent. Circulate the
18) or setscrew (20) unless signs of
solvent to increase cleaning effectiveness.
leakage are present and replacement
of the part is needed.
NOTE
(a) Pull oil level gauge (1) out of oil filler
tube (2). The filler tube (2) is a
If additional machining is to be
press fit into cylinder block (28) and
performed, clean oil passage and
should not be removed except to
reinstall plugs after all machining is
replace if damaged.
completed.
(b) Remove cap screws (3), lock
(2) Clean oil passages by running a wire
washers (4), two side covers (5) and
brush through them.
gaskets (6).
(3) Check the cylinder block for cracks by
(c) Only as necessary, remove main
using dye penetrants.
Replace a
bearing cap bolts (7, 11) and the
damaged block.
main bearing caps (8, 9, 10, 12)
from cylinder block (28).
(4) Check for excessive cylinder bore wear by
determining the diameter of the wear area
(d) As needed for replacement, remove
and comparing this with the original
bellhousing studs (13), gear housing
cylinder bore diameter. Gauge at intervals
stud (14), and oil pan adapter studs
of approximately 45 degrees. Refer to
(15). Remove dowel pins (16) for
replacement only.
Maximum allowable wear is 0.005 inch
(0.127 mm).
(e) For cleaning of cylinder block
passages only, remove pipe plugs
NOTE
(17, 18), expansion plugs (19), and
setscrew (20).
If wear appears to be unusually
excessive, check for original cylinder
(f) When damaged and replacement is
bore diameter by gauging the
required, remove cylinder head
diameter of the cylinder below the
studs (21 thru 25).
piston ring wear area. The cylinder
may already have been rebored for
(g) When replacing identification plate
oversized pistons.
(27),
7-71
