Cadillac 60 Series 1963 Shop Manual page 101

6-8
HYDRA-MATIC TRANSMISSION
Index No.
Index No.
1 Condition 2-1852
Transmission operates properly in all
DRive selector positions and correct gears.
2 Condition 3-3074
Rear unit fails to provide a reduction, has
direct drive only.
(a) Mechanical failure of rear clutch not
permitting it to release.
(b) Reverse planetary gearset locked
together.
(c) Rear planetary gearset locked together.
3 Condition 1-1852
(a) Reverse cone clutch not fully released.
(Mechanical difficulty)
4 Condition 2-3075
(a) Gl governor valve stuck open.
(b) No. 3 governor ring broken.
5 Conditions 2-4192, 2-4194, 2-4196
Front unit has no reduction. Direct drive
only.
(a) Coupling valve stuck open.
(b) Fluid clutch vanes partly loose and
clutch locked together. (Metallic par-
ticles in the oil will indicate this con-
dition.)
(c) Front planetary gearset locked to-
gether.
6 Conditions 2-2902, 2-2909
Both units have reduction and direct drive.
(Oil circuit difficulty).
(a) Amplifier valve stuck closed.
(b) Transition valve stuck open. (After r e -
moving pan, check exposed amplifier
valve for freedom of movement.)
7 Conditions 2-6302, 2-6602
Front unit fails to provide direct drive,
has reduction only.
(a) Coupling valve stuck closed.
(b) Fluid clutch vanes loose but clutch
not locked together, (Metallic particles
in the oil indicates this condition.)
(c) Coupling signal valves not closing.
(d) Coupling feed oil leaking internally and
not filling the fluid clutch.
8 Condition 2-5252
Both units have reduction and direct drive.
(Oil circuit difficulty)
(a) Transition valve stuck closed.
(b) 3-4 Shift valve stuck open.
(Check main line pressure at idle speed
with transmission in neutral. If line pres-
sure of 95 lbs. is found, item (a) is indi-
cated. If line pressure of 65 lbs. is found,
Item (b) is indicated.)
9 Condition 2-7452
Rear unit fails to provide direct drive, has
reduction only.
(a) G2 governor valve stuck closed.
(b) 2-3 Shift valve stuck closed.
(c) No. 1 governor ring broken.
(d) G2 passage through reverse piston
cover to shift valve body obstructed.
(e) Less than correct number of rear
clutch plates.
(f) Rear clutch apply oil leaking internally.
(g) Rear clutch mechanical apply failure.
(With car on jack, check main line pressure
at 30 MPH with TV rod disconnected. Line
drop pressure of 65 lbs. indicates item (b),
(e), (f), or (g). Normal line pressure, 95
lbs., indicates item (a), (c), or (d).)
10 Condition 2-8552
Both units have reduction and direct drive.
(Oil circuit difficulty).
(a) G2 governor valve restricted.
(b) No. 1 governor ring broken.
(c) 3-4 Shift valve stuck closed.
(Disconnect TV rod, check 2-3 shift point.
If higher than minimum throttle specifica-
tions, item (a) or (b) is indicated. If normal,
item (c) is indicated.)
11 Conditions 2-9602, 2-9609
Both units fail to provide a direct drive,
have reduction only. (No governor pres-
sure to shift valves.)
(a) Gl governor valve stuck closed.
(b) Gl governor weight missing.
(c) No. 4 governor ring broken.
(d) Gl passage from governor to shift
valve body obstructed. (Item (d) will
apply where this condition has occur-
red immediately following the replace-
ment of such parts as reverse piston
housing, shift valve body, channel plate,
or transmission case.)
12 Condition 2-0783
Both units fail to provide reduction or
direct drive.
(a) Pressure regulator valve stuck.
(b) Oil pump slide stuck.
(c) Oil pump drive tangs sheared.
(d) Front sprag broken and overrun clutch
burned up.
Fig. 6-7 Diagnosis Index Chart