FITS AND TOLERANCES
DESCRIPTION
ln.
(mm.)
Specifications
of
the engaging fork
shafts
lock ball springs:
-free
length 1.40-1.44 35.5-36.5
i
-length
under a load
of
18.0-22.0 lbs. (8.2-10 kp)
1.122
28.5
IV. Transmission • 8/2
Spline Backlash:
Transmission driven gears
0.0040-0.0041 0.010·0.106
Transmission drive gears
0.0006·0.0037
0.015;0.093
Synchromesh engagement
collar
0.0039
0.100
Planetary gear train staight drive engagement
0.0027 ·0.0067
0.070-0.170
Planetary gear train engagement 0.0134·0.017
0.340·0.440
Tooth backlash:
Transmission gears
0.0039-0.0079
0.100-0.200
Planetary gear train
0.0027 ·0.0051
0.070·0.130
Outside diameter
of
gear hub sleev,es
(64,
Fig. B.ll/29)
1.9655-1.9665
49.925-49.950
Diameter
of
gear housing bores, Transmission Driven gears
1.9700·1.9720 50.050-50.089
Assembly clearance
of
sleeves in driven gear hubs
0.0031·0.0047 0.080·0.120
Wear
limit
0.012
0.10
Assembly clearance
of
driven shaft in gear hub sleeves
0.000·0.0020
0.000-0.0050
Diameter of P.T.O.
clutch
shaft
0.9828-0.9836
24.964-24.985
Inside diameter
of
bushing 0.9858·0.9879
25.040-25.092
Running clearance
of
P.T.O.
clutch
shaft in bushing
0.0021·0.0050 0.055·0.128
Wear
limit
0.012
0.30
Interference fit
of
bushings
on drive shaft
-0.0014/-0.0036
-0.037/-0.091
Diameter of
clutch
shaft 1.2251·1.2563
31.880·31.910
Diameter
of
drive shaft bushing bore
1.4185·1.4205
36.030-36.080
Dimensions
of
clutch
shaft bushing
Outside diameter
1.4212·1.4291
36.100-36.300
)
Thickness
0.077-0.079
1.960·2.000
Diameter
of
transmission reverse gear axle
0.9834-0.9842
24.979-25.000
Inside fitted diameter
of
bushing
0.9868-0.9881
25.065-25.098
Running clearance
of
reverse gear axle and bushing
0.0026·0.0047
0.065·0.1
19
Wear
limit
0.012
0.30
Interference
fit
of
reverse gear bushing
-0.0020/·0.0090
-0.050/·0.230
Diameter
of
planetary gear train driven pinion shafts
0.5507-0.5512
13.988-14.000
Diameter
of
needle bearings
0.1178-0.1
181
2.990·3.000
Inside diameter
of
driven gears
0.8035-0.8043
20.410·20.430
Assembly clearance
of
shafts, needle bearings and driven gears . 0.0004·0.0024
0.010·0.061
Wear
limit
0.006
0.15
Thickness
of
thrust
washers and rings
tor
speed reduction
unit
0.0579-0.0602
1 .440· 1 .560
Wear
limit
0.051
1.30
Gearshift return spring:
Unstressed length
2.42
61.5
Length under load
of
11.5·12.5 pounds (5.1·5.7 kg)
1.89
48
Gearshift lever spring
Unstressed length 1.3976
35.5
Length
under
load
of
27
pounds (12.3 kg)
1.2401
31.5
Poppet ball
springs
Unstressed
length
1.40
35.5
Length under load
of
18·22 pounds (8.2-kg)
1.12
28.5
Synchromesh flat
springs
Arc under load
of
3-3.4 pounds (1.40·1.55 kg)
0.060
1.5
V.
Bevel Gear and Differential
Normal bevel gear and
pinion
tooth backlash
0.0059-0.0079
0.15·0.20
)
Backlash
of
planetary gear tooth and
spider
pinion
tooth
0.0059-0.0079
0.15·0.20
Backlash
of
bevel gear
too~h
and
differential
shaft
splines
0.0039-0.0042
0.100·0. 106
Diameter
of
spider
pinion
shaft
(19,
Fig. B.lll/5)
0.8653·0.866 1
23.939·23.960
Spider
pinion
bore
0.9464-0.9472
24.040·24.060
Power Train ·
137
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