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TRANSMISSION-TORQUEFLITE
21 -67
GOVERNOR PRESSURE CHART
(Six
Cylinder Vehicles)
VEHICLE SPEED TO AXLE RATIOS
AVI
AR1
AP1
PRESSURE
6.50-1 3
7.35-1 4
7.35- 14
LIMITS
3.23:l
3.55:l
2.93:l
3.55:l
2.93:l
3.23:l
PSI
16-17
14-16
17-19
14-16
17-19
15-17
. .
15
36-45
33-41
36-47
30-38
36-47
33-42
. .
50
59-67
53-61
62-71
51-59
62-71
56-65
.
.
75
GOVERNOR PRESSURE CHART
E i g h t Cylinder Vehicles)
VEHICLE SPEED TO AXLE RATIOS
AV2
AR2
AP2
PRESSURE
7.00-
1 3
7.35-1 4
7.75-1 4
LIMITS
2.93:l
3.23:l
2.93:l
3.23:l
2.93:l
3.23:l
PSI
18-19
16-17
17-19
15-17
18-20
16-18
. .
15
40-51
37-46
36-47
33-42
38-47
35-42
.
.
50
66-75
60-68
62-71
56-65
65-72
59-65
. .
75
GOVERNOR PRESSURE CHART
(426
Cubic
Inch
Engine)
VEHICLE SPEED TO AXLE RATIOS
7.75-1 4
PRESSURE
3.23:l
3.91:l
LIMITS
PSI
16-18
13-15
................................
15
45-51
37-42
................................
50
67-73
55-60
................................
75
If the governor pressures are incorrect at the given
vehicle speeds, the governor valve and/or weights are
probably sticking.
NOTE:
T h e governor
pressure should
respond
smoothly t o changes
in
mph
and should r e t u r n t o
0
t o
lY2
psi w h e n t h e vehicle is stopped.
High
pres-
sure a t stand s t i l l (above
2
psi)
will
p r e v e n t t h e
transmission f r o m downshifting.
Throttle Pressure
No provisions are made to test the throttle pres-
sure. Incorrect throttle pressure should only be sus-
pected
if
the part throttle shift speeds are either very
delayed or occur too early in relation to vehicle
SPRING
I
RETAINER
L
N K 153
Fig. 39-Measuring
Spring Retainer Location
speeds. In which case, the throttle linkage should be
adjusted before throttle pressure setting is adjusted.
Refer to Page 59.
HYDRAULIC CONTROL PRESSURE
ADJUSTMENTS
Line Pressure
An incorrect throttle pressure setting will cause in-
correct line pressure readings even though the line
pressure adjustment is correct. Always inspect and
correct the throttle pressure adjustment before ad-
justing the line pressure.
NOTE: Before adjusting t h e l i n e pressure, measure
t h e distance between t h e manual valve (valve
in
1-low position) and l i n e pressure adjusting screw
(Fig.
39).
T h i s measurement m u s t b e
1%
inches;
correct
by
loosening t h e s p r i n g retainer screws a n d
repositioning t h e s p r i n g retainer. T h e r e g u l a t o r
valve m a y cock and hang
up in
i t s b o r e
if
t h e
s p r i n g retainer i s o u t o f position.
If
the line pressure
is
not correct, it will be neces-
sary to remove the valve body assembly to perform
the adjustment. Refer to Page
75.
Fig. 40-Line
Pressure Adjustment
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