Chevrolet 70 1969 Series, Shop Manual

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TRANSMISSION AND CLUTCH 7-42
SPECIFICATIONS (CONT.)
Countershaft Front
Type........................................................................... Needle Bearing
Make and N um ber.................................Torrington # MY-32161
Outside Diameter................................................ 2.3745” - 2.3755”
Inside Diameter.................................................. 1.9994” - 2.0000”
W idth........................................................................ 0.990” - 1.000”
Countershaft Rear
Type................................................ Single Row Ball w/Snap Ring
Number Balls and Size.............................................. (8)—23/32”
Make and Number..........................................Corporation 954226
Outside Diameter................................................ 4.3301” - 4.3307"
Inside Diameter.................................................. 1.9680" - 1.9685”
W idth......................................................................1.0625” - 1.0630”
Mainshaft 4th Speed Gear
Number of Teeth (Outer)
Model 325 .................................................................................... 33
Model 327 .................................................................................... 32
Backlash with M ate................................................ 0.005” - 0.009”
Number of Clutch Teeth........................................................... 17
Backlash with M ate................................................ 0.006" - 0.010”
Hub W idth................................................................ 1.896” - 1.916"
COUNTERSHAFT
Diam. at Front Bearing Surface........................1.9994” - 2.0000”
Diam. at 3rd, 4th, and Drive Gear Surfaces . . 2.2510” - 2.2515”
Diam. at Rear Bearing Surface......................... 1.740” - 1.750”
Length......................................................................15.120” - 15.130”
MAINSHAFT (NEW LIMITS)
Diam. at Pilot E nd..................................................... 1.60” -1.61”
Diam. at 4th Gear Surface............................... 2.2495” - 2.2500”
Diam. at 3rd Gear Surface............................... 2.3755” - 2.3760"
Diam. at 2nd Gear Surface................................... 2.845” - 2.855”
Diam. at 1st and Reverse Gear Surface............. 2.845” - 2.855”
Diam. at Rear Bearing............................................1.748” - 1.749"
Length........................................................................................ 19.77"
MAINSHAFT GEARS
Main Drive Gear
Diameter at Pilot Bearing..................................... 1.205” - 1.215”
Number of Splines...........................................................................10
Outside Diameter at Spline...................................1.495” - 1.499”
Thickness of Splines................................................0.229” - 0.231"
Diameter at Main Drive Gear Bearing........... 2.5590” - 2.5595”
Number Teeth-Main Drive Gear
Model 325 ............................................................................... 27
Model 327 ............................................................................... 29
Backlash with M ate................................................ 0.005” - 0.009”
Inside Diameter of Mainshaft Pilot
Bearing Surface................................................................ 2 5/32”
Number of Clutch Teeth................................................................16
Backlash with M ate................................................ 0.005” - 0.009”
Length...................................................................................... I l l /8”
Mainshaft 1st and Reverse Gear
Number of Teeth (Outer)........................................................... . 53
Backlash with M ate................................................ 0.005” -0.010”
Number of Splines (Inner)............................................................. 6
Hub W idth............................................................................... 2 3/32”
Mainshaft 2nd Speed Gear
Inside Diameter....................................................... 2.883” - 2.884”
Number of Teeth (Outer).............................................................. 45
Backlash with M ate................................................ 0.005” - 0.010”
Number of Clutch Teeth............................................................. 23
Backlash with M ate................................................ 0.006” - 0.010”
Hub Width................................................................ 2.204” - 2.184”
Mainshaft 3rd Speed Gear
Number of Teeth (Outer)
Model 325 ...................................................................................... 43
Model 327 ...................................................................................... 41
Backlash with M ate................................................ 0.005” - 0.009”
Number of Clutch Teeth........................................................... 22
Backlash with M ate................................................ 0.006” - 0.010”
Hub W idth................................................................ 1.937” -1.947”
COUNTERSHAFT GEARS
Drive Gear (CL 325 Models)
Diam. of Bore........................................................... 2.249” - 2.250”
Outside Diam.............................................................. 7.360” - 7.370”
Number of Teeth............................................................................. 50
Backlash with Main Drive G ear.............................0.005” - 0.009”
W idth........................................................................... 2.090” -2.105”
Drive Gear (CL 327 Model)
Diam. of Bore........................................................... 2.249” - 2.250”
Outside Diam..............................................................7.114” - 7.124”
Number of Teeth............................................................................. 48
Backlash with Main Drive G ear.............................0.005” - 0.009”
W idth........................................................................... 2.090” - 2.105"
3rd Speed Gear (CL 325 Models)
Diam. of Bore........................................................... 2.427" - 2.432"
Outside Diam.............................................................. 5.069” - 5.079"
Number of Teeth............................................................................. 34
Backlash with Mainshaft 3rd G ear...................... 0.005” - 0.009”
W idth...........................................................................1.621” - 1.627”
3rd Speed Gear (CL 327 Model)
Diam. of Bore........................................................... 2.249” - 2.250”
Outside Diam.............................................................. 5.355” - 5.365”
Number of Teeth............................................................................. 36
Backlash with Mainshaft 3rd G ear...................... 0.005” - 0.009”
W idth...........................................................................1.621” - 1.627"
4th Speed Gear (CL 325 Models)
Diam. of Bore............................................................ 2.249” - 2.250”
Outside Diam..............................................................6.416” - 6.426”
Number of Teeth............................................................................. 43
Backlash with Mainshaft 4th G ear...................... 0.005” - 0.009”
W idth........................................................................... 1.496” - 1.502”
4th Speed Gear (CL 327 Model)
Diam. of Bore........................................................... 2.249” - 2.250”
Outside Diam.............................................................. 6.645” - 6.655”
Number of T eeth............................................................................. 45
Backlash with Mainshaft 4th G ear...................... 0.005” - 0.009"
W idth...........................................................................1.498” - 1.502-
COUNTERSHAFT DRIVE GEAR SPACER
Inside Diam................................................................ 2.360” - 2.404”
Outside Diam.............................................................. 2.500” - 2.510”
W idth........................................................................... 1.810” - 1.814”
REVERSE IDLER GEAR
Diam. of Bore............................................................ 1.750” - 1.751"
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L