![background image](http://html1.mh-extra.com/html/gmc/s-series-1994/s-series-1994_repair-manual_2235929476.webp)
m
1 ?
Flanges
the same side when installed in the cylinder
bore. If a connecting rod is ever transposed
from one block or cylinder to another, new con
necting rod bearings should be fitted and the
connecting rod should be numbered to corre
spond with the new cylinder number. On 7.4L
engines the rod is not symmetrical and the out
side always faces out.
Measure
Ring end gap and ring clearance. Refer to Section
6
A.
Inspect
• Ring fit. Refer to Section
6
A.
INTAKE AND EXHAUST
M ANIFOLD
IJ ji
Clean
• Old pieces of gasket from the gasket surfaces.
• Excessive carbon build-up in the exhaust passages
of the intake manifold.
• Scale and deposits from the coolant passages of
the intake manifold.
• EGR passage (if used) of excessive carbon depos
its.
L*
Inspect (Figure 44)
• Manifolds for cracks, broken flanges, and gasket
surface damage.
• A lignm ent of exhaust m anifold flanges. Use a
straight edge and feeler gage (figure 44). If the
flanges do not align, the manifold is warped and
should be replaced or resurfaced.
• AIR system injection tubes for damage. Replace as
needed.
CAMSHAFT
Important
• Whenever the camshaft needs to be replaced, a
new set of valve lifters must also be installed.
L *
Inspect
Camshaft lobes and journals for scratches, pitting,
scoring, and wear.
Measure (Figures 45 and 46)
Tool Required:
J 7872 Dial Indicator (or equivalent)
Camshaft runout (figure 45). Mount the camshaft in
V-blocks or between centers. Using J 7872, check
the intermediate camshaft journal. If runout on
5.0/5.7L engines exceeds 0.0254 mm (0.002 inch)
and on 7.4L engines 0.0635 mm (0.0025 inch), the
cam shaft is exce ssive ly bent and should be
replaced along with the camshaft bearings.
Camshaft journal out-of-round. Use a micrometer
(figure 46). If the journals are more than 0.00254
mm (
0.001
inch) out-of-round, replace the cam
shaft.
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: ......
Page 775: ......
Page 776: ......
Page 785: ......
Page 804: ...NOTES...
Page 806: ......
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...
Page 908: ......
Page 919: ......