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#1 |
Registered User
Join Date: Jan 2011
Location: Mount Airy, NC
Posts: 132
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TV cable adjustment damage
I got a rebuilt 700R4 from a performance transmission builder and am having some problems. Reverse is good, first gear is good, 1-2 shift is good, second gear is good, but third gear doesn't pull. The TV cable is adjusted per the instructions on the Bowtie Overdrive site. Push the housing all in, wide open throttle and 3/8 to 1/2 slack at the carb. The builder is trying to say the problem is TV cable adjustment has damaged the tranmission. There has never been a 1-2 problem. What could the problem be and how can I know the builder isn't trying to charge me for waurranty work?
I appreciate any feedback, thanks.
__________________
Jack Byrd '70 Chev Custom SWB(new to me), 307CID(added Weiand Stealth, headers and Edelbrock Performer carb, up to 17 MPG now), 700R4 '76 Airstream Argosy MH(want a longer one), 454CID, TH400 |
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#2 | |
Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: TV cable adjustment damage
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#3 |
Registered User
Join Date: Mar 2002
Location: Forney TX
Posts: 4,512
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Re: TV cable adjustment damage
I was told to set my tv at wot for it to be tight. And to set it by pump pressure not just the feel of the cable. Sounds like trans is laying down.
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Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274 |
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#4 |
Registered User
Join Date: Jan 2011
Location: Mount Airy, NC
Posts: 132
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Re: TV cable adjustment damage
I live in Mayberry and the local trans shop isn't exactly B&M. They don't even have a pressure gauge to check the line pressures(I asked on a previous transmission they built for me and was disatisfied with). This is NASCAR country and performance is expensive. I ended up going out of state to get a good deal on a performance tranny. Where could I get a pressure gauge to check the next install when I get this one fixed?
Thanks,
__________________
Jack Byrd '70 Chev Custom SWB(new to me), 307CID(added Weiand Stealth, headers and Edelbrock Performer carb, up to 17 MPG now), 700R4 '76 Airstream Argosy MH(want a longer one), 454CID, TH400 |
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#5 | |
Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: TV cable adjustment damage
Quote:
![]() Heres some gauges, Any 0-300psi gauge & whip with a 1/8" NPT end on it will work. http://www.finditparts.com/products/...-5550?cpao=114 http://www.etoolcart.com/transmissio...e-atd5550.aspx This is what I have http://buy1.snapon.com/products/diag...s/eepv308a.asp |
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#6 |
Registered User
Join Date: Jan 2011
Location: Mount Airy, NC
Posts: 132
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Re: TV cable adjustment damage
[QUOTE=clinebarger;4550177]They dont have a pressure gauge! Thats crazy, I bet they have a $4000 scanner, But buying a $40 gauge is out of the question
![]() Heres some gauges, Any 0-300psi gauge & whip with a 1/8" NPT end on it will work. Nope no $4000 scanner, he only got a transmission flush machine last November. Where can I find out what to look for when the gauge is attached? This forum is the greatest! Thanks,
__________________
Jack Byrd '70 Chev Custom SWB(new to me), 307CID(added Weiand Stealth, headers and Edelbrock Performer carb, up to 17 MPG now), 700R4 '76 Airstream Argosy MH(want a longer one), 454CID, TH400 |
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#7 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,216
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Re: TV cable adjustment damage
I set them so WOT pulls the cable out all the way. It is also important to have the cable hookup the proper distance from the throttle shaft & the right arc. About 1 1/8 in. is close to right.
I put one in one time & noticed it slipped in 3rd. I redid the position of the hookup on the throttle lever & it worked fine after that. |
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#8 |
Registered User
Join Date: Jan 2011
Location: Mount Airy, NC
Posts: 132
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Re: TV cable adjustment damage
Mr. Clinebarger, the pressure chart is a great help. The BTO website gives a good description of the pressure testing procedure, but no pressure ranges. I've ordered a pressure gauge so will be ready for round two.
How many TV springs are available and how do you determine which one you need? Thanks,
__________________
Jack Byrd '70 Chev Custom SWB(new to me), 307CID(added Weiand Stealth, headers and Edelbrock Performer carb, up to 17 MPG now), 700R4 '76 Airstream Argosy MH(want a longer one), 454CID, TH400 |
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#9 | |
Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: TV cable adjustment damage
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#10 |
C10 CLUB Y QUE!
Join Date: Mar 2010
Location: Here
Posts: 2,770
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Re: TV cable adjustment damage
Too bad I have the universal cable that won't click.
But.my question was when taking the psi reading. Do I need to have the engine rev up to WOT. Or is it ok to take your measurement with just pulling on the cable |
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#11 | |
Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: TV cable adjustment damage
Quote:
You have a Lokar style TV cable, OK, I guess it has some kind of crimp for the cable end? Adjust the jamb nuts to center. Slide the plastic end clip down the cable, then the crimp. Hook the plastic end clip to the carb. Clamp some locking pliers on the end of the cable. Rotate the throttle lever to WOT (have someone hold it there). Using the pliers pull the cable tight. While keeping the cable tight, Push the crimp against the plastic end & crimp it/tighten it. After installing the crimp, With the carb still at WOT, pull the cable again, if there is slack, Adjust the cable housing toward the firewall a little at a time untill the slack is no longer present. |
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#12 | |
C10 CLUB Y QUE!
Join Date: Mar 2010
Location: Here
Posts: 2,770
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Re: TV cable adjustment damage
i have that part down.. thanks!
but when im doing the gauge reading with the car on the take the reading at WOT.. can i just pull on the cord to WOT and take the reading for all gears p,r,n,od,d,1,2,? Quote:
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#13 | |
Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: TV cable adjustment damage
Quote:
This test is for DIAGNOTICS ONLY, Full TV pressures in reverse can reach over 300PSI. This should only be performed if there is a problem & for VERY short durations. |
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#14 |
C10 CLUB Y QUE!
Join Date: Mar 2010
Location: Here
Posts: 2,770
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Re: TV cable adjustment damage
i thought you can use it to help adjust the tv cable as well.
i do notice that my 2nd gear shift to quickly and i dont have a down shift at WOT |
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#15 |
Registered User
Join Date: Dec 2010
Location: livingston co.mi
Posts: 2,457
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Re: TV cable adjustment damage
would this presure chart apply to the 2004r too ?
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California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project |
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#16 |
C10 CLUB Y QUE!
Join Date: Mar 2010
Location: Here
Posts: 2,770
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Re: TV cable adjustment damage
No.it.is not fully.adjusted and tighten at WOT. Reason being it won't shift under 2000 out of first.
Yes geometry correction is applyed to.the eldobrock carb. Will make correction tomorrow. Sorry for High jacking this thread... |
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#17 |
C10 CLUB Y QUE!
Join Date: Mar 2010
Location: Here
Posts: 2,770
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Re: TV cable adjustment damage
when shifting out of 1st gear rpm more than likely should be under 2k right
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#18 | |
Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
|
Re: TV cable adjustment damage
Quote:
Stock 700R4s are notorious for a "Slide---BUMP" 1-2 shift, I bet its the feel of the shift not the RPM it happens that has you concerned? If your engine is not running good, You have to give more throttle.....This will cause late shifts. The TV spring could be too long, Thats why I asked for unhooked & hooked pressures. The TV cable adjustment is NOT a tuning tool. Any specs on your trans? Shift kit? 2nd piston upgrade? |
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700r4, adjustment, cable, slipping |
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