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Transmission Ratios
Transmission
Reverse First (low) Second
Third
Fourth
Fifth
Sixth
3-Speed
.........
.. 2.94 to I 2.94 to I 1.68 to 1
Direct
Overdrive ..... " 2.94 to I 2.06 to I U8 to I 0.70 to 1
H.D. 3-Speed.
3.76 to 1 3.17 to I 1.75 to I
Direct
4-Speed ...
6.78 to I 7.06 to I 3.58 to I 1.71 to I
Direct
5-Speed ....
..... 7.85 to I 7.41 to I 4.05 to I 2.40 to I 1.48 to I
Direct
H.D. 5-Speed ....... 7.44 to I 7.55 to I 4.17 to I 2.45 to I 1.45 to I
Direct
Automatic (Yz Ton) .. 4.30 to I 3.82 to I 2.63 to I 1.45 to I
Direct
(%,
I and IYz Ton) 6.11 to I 4.71 to I 3.03 to I 1.56 to I
Direct
(2 and 2Yz Ton) ... 16.9-
14.8-
11.6-
7.5-
6.04 to I 5.3 to I
3.8 to I
2.69 to I 1.94 to I 1.39 to I Direct
Rear Axle Ratio (semi-floating type) ... 1f2-Ton ...... 3.9 to 1
Overdrive ... 4.11 to 1
Rear Axle Ratios (Full-Floating Type)
%-Ton ................ 04.57 to 1
H.D. 2lh-Ton (Except
%-Ton Forward
School Bus and Tandem) 7.7 to 1
Control ............... 5.14 to 1
2-Speed
I-Ton .................. 5.14tol
High ........ 5.83to1 6.40to1
Ilh, 2 and 2lh-Ton and
Low ........ 7.95 to 1 8.72to1
H.D. School Bus and
H.D. 2-Speed
Tandem .............. 6.17to 1
High .................. 6.50 to 1
2-Ton (R.P.O.) ......... 7.20 to 1
Low .................. 8.87 to 1
ADJUSTMENT SPECIFICATIONS
Spark plug gap ................................................... .035"
B
k
. t
~
I
d 265
. V 8 E '
f
.019" new lever
rea er pom gap
-cy . an
cu. m
-
ngmes. . . 1.016" used lever
322
.
V 8 E
.
\.0175" new lever
cu. m.
-
ngme ............ 1.0125" used lever
Distributor points on 6-cylinder engine to break when steel ball in flywheel
is in line with pointer on flywheel housing.
Octane selector should be set for the grade of fuel being used to produce a
slight "ping" on acceleration.
Carburetor idling adjustment (Forward Control) ...... lh to I1f2 turns open
Carburetor idling adjustment (Conv.) ................. 1 to 2lh turns open
Engine Idling Speed
With Conventional Transmission ................. 475 R.P.M.
With Automatic Transmission .................... 425 R.P.M. in neutral
V,iilve Clearances (Hot)
Valve Clearances (Hot)
lh, 3J& and 1 Ton
Ilh and 2 Ton
L.C.F. and 2lh Ton
Intake. . . . . . . . . . . . . ..
.006
.006
(Hydraulic
Exhaust.. . . . . .. .....
.016
.020
Lifters)
Clutch pedal free travel ................................
%"
to 1"
Brake pedal toe-board clearance ....................... L.C.F. 1%"
Others 11116"
Brake shoe release after slight drag is felt
lh-Ton (front and rear) ............................. 7 adj. notches
% and I-Ton (front and rear) ......................... \Just enough to
Ilh and 2-Ton (front) ................................ 1 eliminate drag
Ilh and 2-Ton (rear) ................................. 3 adj. notches
2lh-Ton (front and rear) ............................. 3 adj. notches
Toe-in of front wheels
lh-Ton
.............................................
1fs"
to
%2"
%, 1, Ilh, 2 and 2lh-Ton ............................ 1f4" to 0/,6"
• 97 •
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