TM 5-3805-260-24
CYLINDER BLOCK
Measure wear of the cylinder bore at the top and bottom of piston
ring travel
(1)
Cylinder bore [standard, original
size] ...................... ............4.5000 to 4.5015 in (114.300 to 114.338 mm)
The recommendation is made to make
the cylinder bore the next size larger
when the size of the bore is ............ ............4.5060 in (114.452 mm)
Cylinder bore must be made the next
size larger when the size of the
bore is ................... ............ ............ ............4.5090 in (114 529 mm)
Cylinder bore [ 020 in (0 51 mm) larger than the
original size] .......... ............4.5205 0005 in (114 821 0.013 mm)
The recommendation is made to make the
cylinder bore the next size larger
when the size of the bore is ............ ............4 5260 in (114 960 mm)
Cylinder bore must be made the
next size larger when the size of
the bore is.............. ............ ............ ............4 5290 in (115 037 mm)
Cylinder bore [ 040 in (1 02 mm) larger than the
original size]........... ............4 5405 + 0005 in (115.329 0 013 mm)
Maximum permissible wear of cylinder bores
(replacement of the cylinder block
is necessary) ......... ............ ............ ............4 5490 in (115 545 mm)
(2)
Bore in block for camshaft
bearing .................. ............ ............2 6525 0005 in (67 374 0.013 mm)
(3)
Width of main bearing
cap ........................ ............ ............6 5600 0007 in (166 624 0 018 mm)
Minimum permissible width of
main bearing cap ... ............ ............ ............6.5580 in. (166.573 mm)
Width of main bearing cap guide
(in cylinder block)... ............6 5590 0005 in (166 599 0013 mm)
(4)
Bore in block for main
bearing................... ............ ............3 7075 0005 in (94.171 0.013 mm)
Permissible amount of distortion
in bore ................... ............ ............3.706 to 3.709 in (94 13 to 94.21 mm)
(5)
Torque for bolts holding caps for main bearings
1. Put crankcase oil on bolt threads and washer face
2. Tighten all bolts in number sequence
...............................to ........ ............ ............30 3 lb ft. (40 4 N-m)
3. Put a mark on each bolt and cap
4. Tighten all bolts in number sequence
...............................from mark ........ ............ ............
120 5
(6)
Dimension (new) from centerline of crankshaft bearing
bore to bottom of block
(pan rails)............... ............ ............3.7500 0015 in (95 250 0 038 mm)
(7)
Dimension (new) from centerline of crankshaft
bearing bore to the top of block (top
deck) ...................... ............ ............ ............12 703 005 in (322 66 0 13 mm)
1-22
