one more AOD/Lokar TV cable question thread

one more AOD/Lokar TV cable question thread

Joined: May 14th, 2012, 4:40 pm

May 14th, 2012, 5:38 pm #1


I've got an old column shift Ford powered by a 1981 flat tappet 5.0 SB w/ a 4150 Holley that has the Summit Racing® Throttle Valve Corrector SUM-700202, the ridiculous Lokar KD2AODHT TV cable and the incredibly weak Lokar SRK-4000 Throttle Cable Bracket mounted on the carb.

 

<img alt="[linked image]" src="http://oi48.tinypic.com/27zg401.jpg">

The cable is attached to an AOD (tagged PKA AS20 F3AP BA [1993 full sized Ford pass car?]) trans that's attached to a silly open 8 inch rear with 4:10 gears.


<img alt="[linked image]" src="http://oi46.tinypic.com/6zsowx.jpg">


I got the car on the road two weeks ago and have been hassling with the TV cable adjustment ever since.

First adjustment "by the book method" was with a trans pressure gauge 35PSI TV pressure (in neutral, warm) and Lokar spacer block; Result: only shifted under light throttle and slipped like a mo-fo going into high/OD. Half throttle was worse- no OD at all.

Next adjustment: "neutral cable/assembly line method": carb @ idle position in neutral (cold trans) adjusted cable with no slack or pull on the TV lever. Result: light throttle stacked shifts (in 3rd @22mph) and only went into high/OD after throttle was backed off, about 40mph. No kick down function.

Third adjustment: "WOT Throttle/WOT throttle valve cable". Mash pedal to WOT and pull TV cable to full travel and lock. Result: Terrible soft stacked shifts 1-2 @ 8mph; was in 3rd by 14mph slipped like nobody's business going intohigh/OD on anything but light throttle and slipped every single time going into high/OD, just like the trans was completely cooked. Very disappointing. And scary for the Mrs.

I had begun to hate my 50 year old car and its Automatic overdrive transmission.

Last night I found this forum.

Final adjustment: 4PSI TV pressure @ idle (warm engine/trans, neutral); Just for grins I stuck the stupid gauge block in the cable and checked the TV pressure; it was 39PSI.

Results:
Light throttle (like a consumer) 1-2 @ 12mph with a nice 'slip bump'. 2-3 @ 30mph with slip-bump. 3-4 @ 48mph with a very nice slip-bump.

Half throttle; 1-2 9mph, 2-3 23mph, 3-4 40mph. All shifts were nice crisp w/ very slight slip-bump.

I can't go full throttle because my stupid TV cable won't pull that far without bending my shiny chrome Lokar cable bracket. And my TV cable is probably too short anyway.

Any solutions?

Does anybody (besides the Ford factory) make a decent TV cable/bracket set up?

Everyone raves about the Lokar stuff but I really am not all that impressed with it.

And is there a VB/shifft kit that will raise my TV pressure @ idle without pulling the cable?

Did anyone really read through all of this?

What a great forum!

Thanks

Al

<img alt="[linked image]" src="http://oi50.tinypic.com/5nnrzd.jpg">



Last edited by ODeedonAOD on May 14th, 2012, 11:08 pm, edited 1 time in total.
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Joined: January 21st, 2005, 3:11 am

May 20th, 2012, 1:24 pm #2

With all the slipping the tranny has been doing, I would say it's burnt up and time for an overhaul now. Did you say you set TV pressure 40 psi at idle then installed the block gauge and it went back to 39 psi? If so there's some internal valve body problems and it's likely to late for any adjustments.

Ken Collins, BadShoe Productions, How To DVD's specializing in Ford drivetrains www.badshoeproductions.com (banner ad below)
email; badshoe@myway.com
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truck doctor
truck doctor

May 20th, 2012, 1:58 pm #3

I've got an old column shift Ford powered by a 1981 flat tappet 5.0 SB w/ a 4150 Holley that has the Summit Racing® Throttle Valve Corrector SUM-700202, the ridiculous Lokar KD2AODHT TV cable and the incredibly weak Lokar SRK-4000 Throttle Cable Bracket mounted on the carb.

 

<img alt="[linked image]" src="http://oi48.tinypic.com/27zg401.jpg">

The cable is attached to an AOD (tagged PKA AS20 F3AP BA [1993 full sized Ford pass car?]) trans that's attached to a silly open 8 inch rear with 4:10 gears.


<img alt="[linked image]" src="http://oi46.tinypic.com/6zsowx.jpg">


I got the car on the road two weeks ago and have been hassling with the TV cable adjustment ever since.

First adjustment "by the book method" was with a trans pressure gauge 35PSI TV pressure (in neutral, warm) and Lokar spacer block; Result: only shifted under light throttle and slipped like a mo-fo going into high/OD. Half throttle was worse- no OD at all.

Next adjustment: "neutral cable/assembly line method": carb @ idle position in neutral (cold trans) adjusted cable with no slack or pull on the TV lever. Result: light throttle stacked shifts (in 3rd @22mph) and only went into high/OD after throttle was backed off, about 40mph. No kick down function.

Third adjustment: "WOT Throttle/WOT throttle valve cable". Mash pedal to WOT and pull TV cable to full travel and lock. Result: Terrible soft stacked shifts 1-2 @ 8mph; was in 3rd by 14mph slipped like nobody's business going intohigh/OD on anything but light throttle and slipped every single time going into high/OD, just like the trans was completely cooked. Very disappointing. And scary for the Mrs.

I had begun to hate my 50 year old car and its Automatic overdrive transmission.

Last night I found this forum.

Final adjustment: 4PSI TV pressure @ idle (warm engine/trans, neutral); Just for grins I stuck the stupid gauge block in the cable and checked the TV pressure; it was 39PSI.

Results:
Light throttle (like a consumer) 1-2 @ 12mph with a nice 'slip bump'. 2-3 @ 30mph with slip-bump. 3-4 @ 48mph with a very nice slip-bump.

Half throttle; 1-2 9mph, 2-3 23mph, 3-4 40mph. All shifts were nice crisp w/ very slight slip-bump.

I can't go full throttle because my stupid TV cable won't pull that far without bending my shiny chrome Lokar cable bracket. And my TV cable is probably too short anyway.

Any solutions?

Does anybody (besides the Ford factory) make a decent TV cable/bracket set up?

Everyone raves about the Lokar stuff but I really am not all that impressed with it.

And is there a VB/shifft kit that will raise my TV pressure @ idle without pulling the cable?

Did anyone really read through all of this?

What a great forum!

Thanks

Al

<img alt="[linked image]" src="http://oi50.tinypic.com/5nnrzd.jpg">


you are well on your way to solving the problem if i understand you problem it it that there is not enough travel at full throttle. if this is so you will have to shorten the pivot point on the carb and re adjust so there is no interferenc at wot. other alternative is to lengthen the pivot point on the trany.
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Joined: May 14th, 2012, 4:40 pm

May 20th, 2012, 10:57 pm #4

With all the slipping the tranny has been doing, I would say it's burnt up and time for an overhaul now. Did you say you set TV pressure 40 psi at idle then installed the block gauge and it went back to 39 psi? If so there's some internal valve body problems and it's likely to late for any adjustments.

Ken Collins, BadShoe Productions, How To DVD's specializing in Ford drivetrains www.badshoeproductions.com (banner ad below)
email; badshoe@myway.com
Ken,

I guess I wasn't clear about my TV cable/pressure adjustment-

I set the TV pressure @ 4PSI @ 1000RPM, without the gauge block. (warm trans in neutral)

After the 4PSI inital adjustment, just for the hell of it, I installed the gauge block  in the cable @ 1000RPM, it read 39PSI and then returned back to 4PSI when the block was removed.

I'm now very happy with the way the trans shifts, although I'm pretty unhappy with the Lokar TV cable bracket set up.

I'm probably going to make my own TV cable bracket that will mount to the intake bosses and not the left rear carb mounting stud/nut.

Truck Doc,

 I'm still working on the cable/carb linkage geometry.

If I understand you correctly, I can decrease the pivot arc at the trans to match the short carb pivot?

I just don't floor it.......

Thanks, and I'm open to all suggestions.
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Joined: May 14th, 2012, 4:40 pm

May 20th, 2012, 10:58 pm #5

you are well on your way to solving the problem if i understand you problem it it that there is not enough travel at full throttle. if this is so you will have to shorten the pivot point on the carb and re adjust so there is no interferenc at wot. other alternative is to lengthen the pivot point on the trany.
Truck Doc,

 I'm still working on the cable/carb linkage geometry.

If I understand you correctly, I can decrease the pivot arc at the trans to match the short carb pivot?

I just don't floor it.......

Thanks, and I'm open to all suggestions.

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truck doctor
truck doctor

May 21st, 2012, 2:11 pm #6

shorten the carb pivot or lenthen the trans pivot i had the same problem had to do both. the trans pivot has 2 holes but the lower hole is not low enough
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Joined: May 14th, 2012, 4:40 pm

May 24th, 2012, 3:58 pm #7


I solved my weak/flexing Lokar TV cable mounting bracket  with 1/8th" steel plate:

<img alt="[linked image]" src="http://oi49.tinypic.com/xfdfkx.jpg">

No more flexing......



Now I'm gonna' tackle the cable travel problem.
Last edited by ODeedonAOD on May 24th, 2012, 11:48 pm, edited 1 time in total.
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truck doctor
truck doctor

May 25th, 2012, 1:23 am #8

great job on that bracket now just have to modify the levers, i do agree that locar lackes in the finess department. there trany lever is kinda week. im sure you will get it you may have to make a new trany lever with multiple holes then test the travel.you may have to remouve the internal spring unless you like a hard to push pedal.
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Joined: May 14th, 2012, 4:40 pm

August 7th, 2012, 4:51 pm #9


After months of driving around with a MOROSO throttle stop on my Holley 4160 and having only about 60% of my throttle travel so I wouldn't overpull my TV cable at WOT, I finally got to dicking around with the pivot arc on my carburator, mostly because I figured it would be easier to do it topside rather than crawlin' under my old Ford ta' fool with the TV lever on the trans......

After taking a bunch of different measurements, I took a Summit TV cable throttle corretor bracket (SUM-700203) and hacked off the original TV cable tab. After elongating the upper mounting hole 0.070", and finding the rough vertical center line of the bracket, I measured 0.625 from the top of the bottom hole and drilled a hole with a number 3 bit. I tapped the hole 1/4-28 and screwed the cable end stud from the LOKAR kit into the bracket after shortening the threaded end of the stud.

<img alt="[linked image]" src="http://oi48.tinypic.com/2jtpvq.jpg">

Note the cable stud position......

Anyhow, I don't overpull my stupid LOKAR TV cable anymore at WOT:

<img alt="[linked image]" src="http://oi50.tinypic.com/uuhis.jpg">

Accordin' to my old OTC trans gauge, the TV pressure is about 38psi in neutral (warm trans) with the dopey gauge spacer  block installed and drops to about 3psi with the block removed. The trans shifts great under all conditions....

Still have the throttle stop @ 90%- the Missus runs the pisss outa' the car when no one is lookin'

 

 
Last edited by ODeedonAOD on August 7th, 2012, 5:48 pm, edited 1 time in total.
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Joined: October 10th, 2009, 3:08 pm

August 14th, 2012, 5:46 pm #10

Al H., thanks for taking the time to post! You've all given me some ideas on things to try..

My AOD has the "stacked shifts" also. I had the pressure set about 2-3 pounds without the block. I think I am going to try it just a touch higher, say 5 or 6 psi, and see how it reacts.

I may copy your effort for the mount also! TIA
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