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Sticky Chasing and Solving Powerflite and Torqueflite leaks - Leaky Shift Cable
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56D500boy
Posted 2022-01-15 9:26 PM (#618475)
Subject: Chasing and Solving Powerflite and Torqueflite leaks - Leaky Shift Cable



Expert 5K+

Posts: 8542
50002000100050025
Location: Lower Mainland BC
.
There are two ways that a Powerflite and/or Torqueflite can leak at the shift cable:

1. Because the rubber sheath on the cable has deteriorated and/or been cut allowing fluid to leak up and out of the cable through the braided wire external cable support.

2. The rubber O-ring at the transmission end of the shift cable that keeps the fluid in the transmission from leaking out has deteriorated and/or been cut.

1. Replacing the shift cable sheathing

This is as easy as finding some appropriately sized heat shrink and installing it over the cable and then heating and shrinking the heat shrink. I had to do this as part of my Torqueflite into 1956 Dodge swap. I followed the lead of others.

One example of the fix:



My Fix:







2. Transmission end of shift cable O-ring

Where the shift cable is inserted into the transmission (either Powerflite or either version (early/late cast iron Torqueflite), there is an O-ring on the cable.

The Powerflite shift cable O-Ring is PN 1318 864 and it is approximately 3/8" O.D.. It remained as the Powerflite cable O-ring until 1961.

Photos courtesy of Wizard (Sven):



The 56-58 and early 1959 Torqueflite cable O-Ring is PN 1556 385 and it is larger than the Powerflite cable at 1/2".





At some point in the 1959 Model year, a new configuration of the A-466 cast iron TorqueFlite was introduced. Changes included the case design, a switch to a "one piece" valve body (instead of 3 pieces) and a change in how the shift cable was installed and adjusted:





I do NOT know the size of the shift cable O-ring but it was PN 1316 813 and it was used from the switch in 1959 to the last cast iron A-466 in 1961. As it happens, 1316 813 was also used in the Vickers Power Steering pumps from 1951 on. IF ANYONE KNOWS THE SIZE OF THIS O-RING PLEASE POST IT UP HERE





Edited by 56D500boy 2022-01-15 11:26 PM




(56-58MoparPowerFliteShiftCableORingSealPN1316864.jpg)



(61MoparPowerFliteShiftCableSeal_1316864.jpg)



(56-58MoparTorqueFliteShiftCableORingSealPN1556385.jpg)



(59MoparTorquefliteShiftCableORingTransitionFrom1556385To1316813.jpg)



(61MoparTorqueFliteShiftCableSeal_1316813.jpg)



(OneApplicationOfThe1316813Oring_1.jpg)



(OneApplicationOfThe1316813Oring_2.jpg)



Attachments
----------------
Attachments 56-58MoparPowerFliteShiftCableORingSealPN1316864.jpg (159KB - 43 downloads)
Attachments 61MoparPowerFliteShiftCableSeal_1316864.jpg (147KB - 42 downloads)
Attachments 56-58MoparTorqueFliteShiftCableORingSealPN1556385.jpg (125KB - 42 downloads)
Attachments 59MoparTorquefliteShiftCableORingTransitionFrom1556385To1316813.jpg (184KB - 45 downloads)
Attachments 61MoparTorqueFliteShiftCableSeal_1316813.jpg (157KB - 43 downloads)
Attachments OneApplicationOfThe1316813Oring_1.jpg (106KB - 41 downloads)
Attachments OneApplicationOfThe1316813Oring_2.jpg (138KB - 42 downloads)
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dels56
Posted 2022-01-20 9:15 PM (#618641 - in reply to #618475)
Subject: Re: Chasing and Solving Powerflite and Torqueflite leaks - Leaky Shift Cable


Veteran

Posts: 199
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Hi Dave, I do not remember the size of the larger cable seal o ring. As this was long before everything became metric I am guessing, if you know the o.d. The cross section is probably 3/32” . Say ((3/4 o.d. - (3/32 x 2)) = I.D. Try a local Parker hydraulics distributor. They have 1000’s of o rings.

Del S
Sitting in the cool of the evening with nothing else to do tonight.
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chstrumpetdude
Posted 2022-05-17 1:10 PM (#621545 - in reply to #618475)
Subject: RE: Chasing and Solving Powerflite and Torqueflite leaks - Leaky Shift Cable


Member

Posts: 10

Location: Springfield, MO
This was a Godsend.

I have a 59 Chrysler. I did the heatshrink and used some metric O-rings from a set 11 and 12mmx1.5; however, these did not seal. I used 3 to fill the gap and are snug on the ID, but must not be tight enough on the OD? Mine is the wide gap version.

Would the OE ring completely fill the slot? IDK the purpose of the wide O-Ring slot if a thin O-ring goes in.

Below are pics of my heatshrink repair and attempted O-Ring. I hate how dropping the pan is the only way to 100% accurately readjust the cable.

https://imgur.com/a/TQfAstv

Supposedly Fastco sells a PF/TF cable O-ring kit that fits

Edited by chstrumpetdude 2022-05-17 5:13 PM
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56D500boy
Posted 2022-05-17 2:02 PM (#621546 - in reply to #621545)
Subject: RE: Chasing and Solving Powerflite and Torqueflite leaks - Leaky Shift Cable



Expert 5K+

Posts: 8542
50002000100050025
Location: Lower Mainland BC
.
Based on your photos, your 59 cast iron TF is the early style, not the late style. So your cable is much like mine (57 A-466 in my 56 Dodge). They can be adjusted without dropping the pan (Procedure in a 57 or 58 Dodge or Chrysler Factory Service Manual) (Downloadable from MyMopar.com)

https://mymopar.com/service-manuals/

See excerpts below that use the neutral safety switch to position the cable. Which I *think* you can do by tilting the car by jacking on the left side of the frame - enough to avoid draining the fluid like the FSMs suggest.

As for the O-ring, I believe that the cable end housing at that point is 1/2" which is 12.7 mm. So your 12 mm O-rings are too small. Find some 0.5" or 13 mm O-rings and try again.





(57DodgeFSMCableAdjustmentProcedure.jpg)



(57ChryslerFSMCableAdjustmentProcedure.jpg)



(chstrumpetdudes59CastIronTFCableFixes_1.jpg)



(chstrumpetdudes59CastIronTFCableFixes_2.jpg)



(chstrumpetdudes59CastIronTFCableFixes_3.jpg)



Attachments
----------------
Attachments 57DodgeFSMCableAdjustmentProcedure.jpg (174KB - 12 downloads)
Attachments 57ChryslerFSMCableAdjustmentProcedure.jpg (216KB - 11 downloads)
Attachments chstrumpetdudes59CastIronTFCableFixes_1.jpg (131KB - 13 downloads)
Attachments chstrumpetdudes59CastIronTFCableFixes_2.jpg (101KB - 12 downloads)
Attachments chstrumpetdudes59CastIronTFCableFixes_3.jpg (112KB - 12 downloads)
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geoffs60
Posted 2022-05-17 6:28 PM (#621548 - in reply to #618475)
Subject: RE: Chasing and Solving Powerflite and Torqueflite leaks - Leaky Shift Cable


Veteran

Posts: 118
100
Location: christchurch New Zealand
Another overlooked leakage area more especially on the 59 on models is the the shaft seal on the kickdown. I have experienced of late no end of leakages in this area, the seal in a lot of cases is put in the wrong way- easily done- so there goes the first starting area. Secondly as these 60+ year old autos and the KD shaft is moving every time you touch the gas pedal and only in approx a 30 degree angle the shaft coming thru the alloy valve body wears an oval hole, when inspected the movement at the end of the shaft is quite pronounced. I have had the base of the valve body machined back and an oversize stepped bronze bush fitted and with the KD shaft re fitted has eliminated the sideways movement at the top. Also when refitting the valve body into the trans, before tightening up the attaching bolts check that the shaft that comes thru the hsg is central thru the hsg, it is surprising how much movement there is just with the bolts thru the valve body, when viewing from the outside into the KD hole hole it is surprising how they can be up a 1/16" off centre.
Lastly, the KD seal that is std- which is a very weak looking seal, i have experimented with the 62-63 727 KD seal, which is a little larger in OD by a few thou and is double ribbed , tighter to get in but seems more effective in oil control with out compromising the KD movement.
So all my 59 on trans that are being rebuilt are now getting the modification, and hopefully some dry garage floors when they sit and the converters drain back.
Geoff

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