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B. Main bearing and connecting rod journals for taper
and out-of-round (figure 59). If the journals are
tapered or out-of-round more than 0.025 mm
(0.001-inch), replace the crankshaft.
C. Crankshaft runout (figure 60).
• Mount the crankshaft in V-blocks or between
centers.
• Use a dial indicator as shown.
• If runout exceeds 0.01 mm (0.0004 inches), the
crankshaft is bent and must be replaced, along
with the main bearings.
AVAILABLE BEARING SIZES
Factory Main Bearing Selection
There are five main bearings numbered 1 through 5
from the front of the engine. There is an arrow on the
bearing cap that points toward the front of the engine.
The center number 3 bearing is the thrust bearing. The
upper bearing halves have an oil groove. The lower
bearing halves do not have an oil groove.
During fa cto ry assem bly the main bearings are
select-fitted to each of the five main bearing bores. The
proper size code is stamped on the pan rail at the
corresponding main bearing bulk head. The total diame
ter size range of the main bearing bores 1 through 5 is
79.826 mm to 79.850 mm. This range is divided into
three sizes and stamped #1, #2, or #3 on the pan rail.
The crankshaft is color marked red, blue, orange, or
white near the main bearing journal. The proper bearing
selection is made by using the number on the pan rail.
Color marking on the corresponding crankshaft jour
nal for selecting the proper bearing halves are shown in
the crankshaft main bearing specifications at the rear of
this section.
Main Bearing Selection for Service
• Main bearings are available in Standard, 0.013-mm
(0.0005-inch) and 0.026-mm (0.001-inch) under
sizes for select fitting to attain proper main bearing
clearance.
“Undersize” refers to the crankshaft
diameter.”
• For service purposes, bearing size combinations
that provide the following clearance, as measured
with the plastigage procedure.
A. Main Bearing #1, #2, #3, and #4: 0.045 to 0.083
mm (0.0018 to 0.0033 inches).
B. Main Bearing #5: 0.055 to 0.093 mm (0.0022 to
0.0037 inches).
Connecting Rod Bearing Selection
• Connecting rod bearings are available in 0.026 mm
(0.001-inch) undersizes for select fitting.
• Turbocharged and naturally aspirated light duty
emissions engines may have both standard and
0.08-mm (0.003-inch) OVERSIZE connecting
rod bearings. The oversize connecting rods are
stamped “O.S.” on the cap’s lower end.
FLYWHEEL
IJSJi Clean
M ating su rfa c e s of c ra n k s h a ft and flyw h e e l.
Remove any burrs.
Summary of Contents for S Series 1994
Page 1: ......
Page 11: ...VIEW A p n n n j VIEW C F7554 Figure 10 Hydra Matic 4L60 E Transmission I D Location...
Page 24: ...NOTES...
Page 26: ......
Page 69: ...NOTES...
Page 71: ...3 2 STEERING...
Page 73: ......
Page 84: ......
Page 102: ...40...
Page 130: ...NOTES...
Page 146: ...NOTES...
Page 162: ...NOTES...
Page 166: ...Figure 5 Removing the Pinion Flange Figure 6 Pressing the Drive Pinion from the Cage...
Page 178: ...Figure 3 Spreading the Differential Case Figure 4 Removing the Differential...
Page 190: ...NOTES...
Page 202: ...NOTES...
Page 206: ...F5785...
Page 212: ...B Button Moved Out of Bearing Bore F5791...
Page 228: ...NOTES...
Page 232: ......
Page 234: ......
Page 236: ...Adjuster 63 Bolt 64 Lock Figure 10 Turning the Adjuster Plug K3 Models...
Page 237: ...Figure 13 Removing the Pinion Seal 39 Bearing Cup Figure 16 Removing the Inner Bearing Cap...
Page 261: ...F7475...
Page 267: ...B Button Moved Out of Bearing Bore F5791...
Page 294: ...NOTES...
Page 300: ...NOTES...
Page 318: ...NOTES...
Page 322: ...SR207LN2 EDS...
Page 324: ......
Page 326: ...OVERHEAD OILING AND RETURN MAIN OIL GALLERY N30005 6A2 J EDS...
Page 368: ...103 153 127 V1200...
Page 370: ......
Page 372: ......
Page 374: ...F9375 Figure 7 Engine Lubrication Diagram Engines Without Balance Shaft...
Page 376: ...Figure 9 Engine Lubrication Diagram Engines With Balance Shaft...
Page 399: ...V2974...
Page 410: ......
Page 412: ...195 196 201 174 252 163 165 164 244 3706r3924...
Page 452: ......
Page 454: ...163 164 V1202...
Page 456: ...20 21x 302 210 4 0 41 2 5 2 5 1 2 51 4 2 e3 54 3 9 252 252 S 255 255 25 6 256 209 V1196...
Page 458: ...100 1 8 4 185 183 177 v 75 201 3706r1204...
Page 460: ......
Page 510: ......
Page 512: ...V2131...
Page 514: ...110 106 106 103 90 93 89 88 87 86 v 7 7 7 7 j A _ 111 f t 2 a a s 53 49 L 47 46 3706r4751...
Page 516: ...259 260 150 237 S lM 180 167180 J 1 82 183 170 169 1 1 78 1 7 9 213212 2 0 7 205 r i 3706r4752...
Page 566: ...NOTES...
Page 574: ...NOTES...
Page 618: ...SPECIAL TOOLS...
Page 620: ...NOTES...
Page 672: ......
Page 682: ......
Page 686: ......
Page 694: ...RH0213 4L60 E...
Page 695: ...657 659 m i J 8092 H J 34196 4 3 34196 5 657 658 665 J 23907 J 7004 1 J 8092 RH0214 4L60 E...
Page 696: ...J 8092 J 34196 4 33 31 J 8092 RH0215 4L60 E...
Page 697: ...SPECIAL TOOLS...
Page 698: ...SPECIAL TOOLS...
Page 758: ...RH0194 4L80 E...
Page 764: ......
Page 770: ...SPECIAL TOOLS...
Page 771: ...SPECIAL TOOLS CONT...
Page 772: ......
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Page 776: ......
Page 785: ......
Page 804: ...NOTES...
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Page 808: ......
Page 822: ...3707r5079...
Page 840: ......
Page 848: ...NOTES...
Page 852: ......
Page 860: ...F5435...
Page 866: ......
Page 878: ...F9167...
Page 882: ...16 FrontOutputShaft 18 DrivtQNr 19 DrivenGm t 20 DriveChain 22 FrontOutputBearing V2836...
Page 890: ...F9168...
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