Chevrolet 70 1969 Series, Shop Manual

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TRANSMISSION AND CLUTCH 7-15
SPECIFICATIONS (CONT.)
REVERSE IDLER GEAR BUSHING (NP540)
Inside dia......................................................................1.174” - 1.777"
Outside dia................................................................................. 1.250"
MAIN DRIVE GEAR
Diameter at Pilot (Front End)........................... 0.9832” - 0.9837"
2nd SPEED GEAR THRUST WASHER
Thickness.................................................................... 0.249” - 0.250"
Outside dia...................................................................... 2.68” - 2.75”
Inside dia...................................................................... 1.970” - 1.978”
MAINSHAFT 4th and 5th SPEED CLUTCH
GEAR SNAP RING
Available Thicknesses..............................................0.086” - 0.088”
............................................ 0.089” -0.091”
............................................ 0.092” - 0.094”
............................................ 0.095” - 0.097”
Inside dia.......................................................................... 1.29” - 1.64”
4th and 5th SPEED SYNCHRONIZER SHIMS
Available Thicknesses............................................ 0.009” - 0.011”
............................................0.014” -0.016”
2nd SPEED GEAR LOCK PIN SPRING
Approximate Free Length.................................................. 0.6875”
Length Under 5 lb. Load..................................................... 0.4375”
Solid Length...........................................................................0.3125”
REVERSE AND LOW PLUNGER SPRING
Free Length............................................................................. 1.5625”
Length Under 30 lb. Load......................................................... 1.00”
Solid Length (Maximum)................................................... 0.59375”
SHIFTING MECHANISM
Poppet Ball Springs—Lbs. Pressure at 15/16”
Reverse (1 reqd. painted yellow)................................. 40-45 lbs.
1st thru 5th (3 reqd.)....................................................... 18-22 lbs.
Clearance Between:
Shift Fork and 1st
and Rev. Sliding Gear Groove......................0.0100” - 0.0250”
Shift Fork and 2nd and 3rd Sliding Clutch . . 0.0160” - 0.0240”
Shift Fork and 4th and 5th
Synchronizer Flange...................................... 0.0170” -0.0230”
Reverse Fork and Idler Gear Groove........... 0.0170” - 0.0310”
Rear face of synchronizer rear outer stop
ring and mainshaft 4th speed g ear.................. 0.050” - 0.070”
Drive Gear Bearing Retainer
Fore and Aft Movement (max.)........................................0.015”
TORQUE W RENCH SPECIFICATIONS
Countershaft Bearing Retainer Bolts....................18 to 27 ft.-lbs.
Drive Gear Bearing Cap Bolts...........................' . . 8 to 17 ft.-lbs.
Propeller Shaft Flange N u t................................... 125-150 ft.-lbs.
Clutch Housing Cover Bolts........................................ 8-10 ft.-lbs.
Brake Locating Bracket Bolt...................................... 65-75 ft.-lbs.
Brake Anchor Bar Bolt................................................. 65-75 ft.-lbs.
CHEVROLET SERIES 70-80 HEAVY DUTY TRUCK SH O P M A N U A L