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TRANSMISSION-TORQUEFLITE
2 1-49
HELI-COIL CHART
HELI-COIL INSERT
INSERTING
EXTRACTING
DRILL
TAP
TOOL
TOOL
Thread
Part
Insert
Part
Part
Pad
Size
No.
Length
Size
No.
No.
No.
10-24
1 185-3
.285"
13/64" (.203")
3
CPB
528-3N
1227-6
Y4-20
1 185-4
W'
17/64" (.265")
4
CPB
528-4N
1227-6
5/ 16-1 8
1 185-5
15/32"
Q (.332")
5 CPB
528-5N
1227-6
941-1 6
1
185-6
9/ 16"
X
(.397")
6
CPB
528-6N
1227-6
7/ 16-1 4
1 185-7
21/32"
29/32" (.453")
7
CPB
528-7N
1227-1 6
Towing Vehicle
Transmission Inoperative:
Tow the vehicle with a
rear end pickup or remove the propeller shaft.
Transmission Operating Properly:
The vehicle may
be towed safely in N (neutral) at moderate speeds.
For long distance towing (over 100 miles), the pro-
peller shaft should be removed.
ALUMINUM THREAD REPAIR
Damaged or worn threads in the aluminum trans-
mission case and valve body can be repaired by the
use of Heli-Coils. Essentially, this repair consists of
drilling out the worn or damaged threads, tapping the
hole with a special Heli-Coil Tap, and installing a Heli-
Coil insert into the tapped hole. This brings the hole
back to its original thread size.
The chart lists the threaded hole sizes which are
used in the aluminum case and valve body, and the
necessary tools and inserts for the repair of damaged
or worn threads. Heli-Coil tools and inserts are readily
available from most automotive parts jobbers.
NOTE: Some thread drag may occur in screwing a
bolt into the installed Heli-Coil insert. Therefore, a
torque reading should be taken of the thread drag
with an inch-pound torque wrench and added to the
specified bolt torque, so that all bolts securing a
particular part will be tightened to the same torque.
SERVICE PROCEDURES
TORQUEFLITE A-904-G,
A-904-LA,
A-727-A A N D B
Various transmission components can be removed
for repairs without removing the transmission from
the vehicle. The removal, reconditioning and installa-
tion procedures for these components are covered
here, except the valve body reconditioning, which is
described on Page
NOTE: The A-727-A and
B transmission has the
sliding spline type output shaft. Whenever the pro-
peller shaft front sliding yoke
is
removed from the
transmission, it should be cleaned and relubricated
as outlined in Group
"0' of this Manual.
Heli-Coil inserts are recommended for repairing
damaged, stripped or worn threads in the aluminum
parts. Refer to Page
49.
LUBRICATION
The transmission fluid and the oil filter should pro-
vide satisfactory lubrication and protection to the
automatic transmission and no change
is
recom-
mended in vehicles used in normal service. Regularly
scheduled oil and filter changes, therefore will not be
required in these vehicles, except when the opera-
tion of the vehicle is classified as severe.
If the regular operation of the vehicle is classified
as severe, the transmission should be adjusted and
the fluid and the oil filter changed approximately every
32,000 miles, according to any of the following:
Police or taxicab operation
Frequent towing of trailers
Continuous operation at higher than normal load-
The transmission should not be idled in gear for
ing and/or temperature.
long periods.
Fluid Level
Inspect the fluid level every
6
months (more often
if
conditions warrant) with the engine and transmis-
sion at normal operating temperature. Refer to
"Lu-
brication and Maintenance," Group 0.
Drain and Refill
(1)
Raise the vehicle on a hoist. Place a drain con-
tainer with a large opening, under the transmission
oil pan.
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