TM 9-2815-225-34&P
3-34. ENGINE BLOCK REPAIR (Contd)
LOCATION/ITEM
ACTION
REMARKS
c. Inspection and Repair (Contd)
27. Cylinder sleeve counterbore
of engine block (14) (Contd)
CAUTION
Never turn counterbore tool counterclockwise. Doing so will damage cutter blade.
Do not remove more than a total of 0.062 in. (1.575 mm) of material when counterbor-
ing. Inside diameter of ledge should never be less than outside diameter of cylinder
sleeve. A ledge that drops toward center of cylinder may cause cylinder sleeve to break
during installation.
d. Turn counterbore tool clockwise
with even pressure.
e. Use a series of light cuts to
Do not remove more than
clean up entire circumference
0.004 in. (0.102 mm) material
of seat.
per cut.
f. Check seat to determine if
additional cuts are required.
g. Chamfer edge of counterbore
Use shims to compensate for
ledge 45° after counterboring.
metal removed and to restore
Do not chamfer deeper than
cylinder sleeve (2) protrusion to
0.013-0.024 in. (0.330-0.610 mm).
0.003-0.006 in. (0.076-0.152 mm).
Use as few shims as possible.
Where possible, use one thick
shim in place of two or more thin-
ner shims.
h. Remove counterboring tool.
28.
Six cam follower
Inspect for wear or damage.
Replace if worn or damaged.
pins (15)
Force may be required to remove
cam follower pins (15). They are a
press fit. Install using a brass
hammer.
29. Six head-to-block
Inspect for wear or damage.
Replace if worn or damaged.
pins (6)
Force may be required to remove
head-to-block pins (6). They are a
press fit. Install using a brass
hammer.
d. Assembly
NOTE
Assembly steps 30 through 34 will to be completed prior to mounting engine block on
maintenance stand.
Apply pipe sealant to threads of plugs installed for water passages, and apply
lubricating oil to plugs installed for oil galleys.
30. Plug (7)
Install on engine block (14).
Tighten to 30 lb-ft (41 Nm).
31. Two plugs (29)
Install on engine block (14).
Balance of plugs are on opposite
side of block. Tighten to 45 lb-ft
(61 Nm).
3-104
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