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7-6. Transmission Oil Pressure Checks
7-5. Transmission Linkage Adjustments
a. Checking the control pressures of the transmission
a. When transmission is shifted to neutral, groove pin
is an accurate and simple method of diagnosing the
on collar assembly (3, fig. 7-3) on shift lever (2) should
causes of specific or general malfunctions.
align with neutral indicator. Shift transmission to neutral
b. Refer to figure 7-4 and check pressures at the
and check position.
b. If position needs adjustment, remove floorboards.
points shown with an accurate pressure gage. Compare
pressure readings obtained with situations covered in
Adjust position of lever by lengthening or shortening
table 7-1 to isolate malfunctions to a specific area of the
directional rod (6) by adjusting position of ball joints on
transmission.
rod.  Tighten lock nuts to secure adjustment.  Check
positions of shift lever in relation to shift positions of the
transmission.
Table 7-1. Transmission Pressures
Engine
Converter charging
Forward
Reverse
RPM
Main line
pressure
clutch
clutch
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum Minimum
Maximum
500
20
30
15
25
15
25
15
25
1000
58
68
42
50
50
58
50
58
1500
110
120
4
84
77
87
77
87
2000
120
135
84
101
80
93
80
93
All speeds: With inching valve out to stop, pressure to clutches is "O"
on a wheeled dolly so it may be drawn from truck when
7-7. Transmission Removal
ready.
a. Drain cooling system, transmission and axle.
c. Remove screws (17, fig. 7-5) and washers (18),
Remove power axle as explained in paragraph 2-8,
and carefully draw transmission straight off engine until
supporting transmission against falling as axle is
input shaft splines are free of torque converter (13)
removed.
bore. Torque converter will remain on engine flywheel,
b. Disconnect cooling hoses neutral safety switch
and may be left there if it is not to be replaced.
leads, and all linkage at transmission. Support front of
engine by blocking and support transmission now
7-6

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