TM 5-4320-300-14
6-7. CYLINDER HEAD AND BLOCK (CONT)
Location/Item
Action
Remarks
CAUTION
Equipment damage could occur if bearing caps are not returned to their original
positions. Follow directions noted during disassembly.
61. Bearing bore
Install main bearing caps. Torque front and
diameter
intermediate main bearing cap bolts to 120 to
130 ft lb (163 to 176 N•m), in an alternating
pattern as shown. Torque rear main bearing
cap bolts to 40 to 50 ft lb (54 to 68 N•m).
Check main bearing bores for proper diameter.
The specified bore diameter is 3.251 to 3.252
inches (82.575 to 82.60 mm). If the bores do
not fall within these limits, the cylinder block
must be replaced.
62. Bearing bore
Check bearing bore alinement by installing new
alinement
bearing shells, installing the crankshaft and bear-
ing caps, tightening the cap bolts to the specified
torque, and rotating the crankshaft by hand in
accordance with paragraph 6-11.
REPLACEMENT OF
CYLINDER BLOCK
END PLATE
63. Cylinder block
Replace end plate if seriously nicked, dented,
end plate
scratched, or scored. Replace end plate plug
nuts having cracks or damaged threads. Re-
place end plate if seriously warped.
6-44
