Chevrolet 70 1969 Series, Shop Manual

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TRANSMISSION AND CLUTCH 7-106
SPECIFICATIONS
GENERAL DATA
Type ...................................... Constant M esh, Helical Gear
Speeds .................................................................................... Four
Model N u m b e r..................................................................... 6041
GEAR RATIOS
1st ........................................................................................ 2.14:1
2nd ....................................................................................... 1.24:1
3rd ....................................................................................... 1.00:1
4th ........................................................................ . . . . . 0.86:1
SHIMS AND SPACERS
Main Drive Gear Bearing Spacer Lengths . . . . 1.377”
1.379”, 1.381”, 1.383”, 1.385”, 1.387", 1.389” , 1.391” ,
1.393", 1.395” - Select as required.
Countershaft R ear Bearing Cap Shim Thickness
0.003", 0.010", 0.030”
SHIFT ROD PO PPET SPRING
Free Length (ap p ro x .)............................................... 1-53/64”
Lbs. P ressu re @ 1 - 1 / 4 " ............................................... 36-40
GEAR BACKLASH
Main Drive Gear to Countershaft
Drive G e a r ..................................................... 0.006”-0 .0 H ”
M ainshaft O verdrive Gear to Countershaft
O verdrive G e a r ............................................ 0.006”-0.012"
M ainshaft 1st Spd. Gear to Countershaft
1st Spd. G e a r.................................................. 0.006”-0.012”
M ainshaft 2nd Spd. Gear to Countershaft
2nd Spd. Gear ............................................... 0.006”-0.012"
Sliding Clutches to Clutch G e a r s ............. 0.004”-0.007"
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L