Throttle cable replacement - 74

Throttle cable replacement - 74

Eric Hamilton (Durham NC)
Eric Hamilton (Durham NC)

August 30th, 2008, 5:50 pm #1

I'm replacing a throttle cable for the first time. So I went through the excellent thread in Best Of... And it all seems like an moderate PITA but otherwise not so bad...

Except that the description of how the cable is attached to the pedal makes no sense. Springs? Bushing? Two cotter pins? On the '74 that I'm working on, and the '74 that I'm stripping for restoration, the eye on the end of the cable just fits over a shaft at the end of the pedal arm. There is no spring and all the return force in the system comes from the springs on the cam cover.

So what's going on here? Has anyone out there actually seen how this works on a '74? Do I happen to have two weird cars, or were the '74s different in this as in so many other things?

Or am I just totally misunderstanding the descriptions (from three different people)? Anyone have a photo or a clear drawing of what I should expect to see where the cable connects to the pedal?
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htf
Joined: May 5th, 2001, 4:29 pm

August 30th, 2008, 7:31 pm #2

I belive there is a detailed post there.


HaXD
Herzel, in Israel

WhiteX
The late Green '85 X1/9
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Eric Hamilton (Durham NC)
Eric Hamilton (Durham NC)

August 30th, 2008, 8:48 pm #3

... my question is about why what's in Best Of doesn't seem to apply to my '74.

BTW, the cable-throttle connection is not the only difference. All three of my '74s have the same cable sheath and it's different from the NOS sheath I bought from Matt. That's not a problem; the new one fits and seems to be generally better built than what I started with.
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Joined: August 6th, 2005, 6:03 pm

August 30th, 2008, 10:25 pm #4

I'm replacing a throttle cable for the first time. So I went through the excellent thread in Best Of... And it all seems like an moderate PITA but otherwise not so bad...

Except that the description of how the cable is attached to the pedal makes no sense. Springs? Bushing? Two cotter pins? On the '74 that I'm working on, and the '74 that I'm stripping for restoration, the eye on the end of the cable just fits over a shaft at the end of the pedal arm. There is no spring and all the return force in the system comes from the springs on the cam cover.

So what's going on here? Has anyone out there actually seen how this works on a '74? Do I happen to have two weird cars, or were the '74s different in this as in so many other things?

Or am I just totally misunderstanding the descriptions (from three different people)? Anyone have a photo or a clear drawing of what I should expect to see where the cable connects to the pedal?
It has been 15+ years since Ive done an early throttle cable. All I can remeber was it was a PITA.


Follow this link (warning, 10MB download)74 parts book and roll up to page 40 of the PDF.

It appears that the original cable has a hard fitting on the end and it is pinned into the arm of the throttle pedal's lever.

Maybe just swap the pedal of a 76-78 ?

From the glass lined tanks of old Bertone
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Matt Brannon - Midwest-X19.com
Matt Brannon - Midwest-X19.com

August 31st, 2008, 12:33 am #5

I'm replacing a throttle cable for the first time. So I went through the excellent thread in Best Of... And it all seems like an moderate PITA but otherwise not so bad...

Except that the description of how the cable is attached to the pedal makes no sense. Springs? Bushing? Two cotter pins? On the '74 that I'm working on, and the '74 that I'm stripping for restoration, the eye on the end of the cable just fits over a shaft at the end of the pedal arm. There is no spring and all the return force in the system comes from the springs on the cam cover.

So what's going on here? Has anyone out there actually seen how this works on a '74? Do I happen to have two weird cars, or were the '74s different in this as in so many other things?

Or am I just totally misunderstanding the descriptions (from three different people)? Anyone have a photo or a clear drawing of what I should expect to see where the cable connects to the pedal?
All of the 74-78 cars use the same design, and replacement of the cable is pretty easy. A solid eyelet that slips over a stud on the accelerator pedal. Just thread the cable through the rubber bushing into the solid tube (and then into the flexible sheath) to the back of the car and fasten it at the accelerator linkage. It's a snap.

79-on are the cars that use the more complex spring mechanism at the pedal assy, and yes, those can be a realy PITA without knowing a few tricks.

Good luck!

-M
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Eric Hamilton (Durham NC)
Eric Hamilton (Durham NC)

August 31st, 2008, 1:10 am #6

Yes, it is indeed way easier at the pedal. I pulled the cotter pin, fed the cable through, hooked the eye up the pedal, new cotter pin, no problem at all... I was starting to feel good about this. And I'm glad to hear that I'm not stone crazy, the 74-78 cars are different, and the best-of thread was not about them

But...

Right now I'm trying to get the end of the sheath into the end of the solid tube. The nose of the metal fitting on the end of the new sheath obstinately won't quite fit into the tube. The fitting from the old sheath measures 5.5 mm OD and is just a skosh loose; the new fitting mikes out at 6.0 mm OD and won't quite go in.

Aaargh. Aargh. Aargh.

I am going to drink several bottles of cold beer and forget about it until tomorrow AM. If it comes to it, I can improvise something with a choke-cable sheath.




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Eric Hamilton (Durham NC)
Eric Hamilton (Durham NC)

August 31st, 2008, 5:57 pm #7

Problem solved... As I worked through the second well-chilled dose of the standard prescription for mechanical frustration, my wife asked whether there was any way that I could mate the end of the new-style cable sheath into the fitting from the end of the old-style cable sheath... like cut some threads or something...

Bingo! Eureka!

The nose at the end of the new cable sheath is 6mm and change, just about right for a 1/4-28 die. The hole in the back of the fitting for the old sheath is just a skosh less, and perfect for a 1/4-28 tap. So I threaded the nose at the end of the new cable sheath, threaded the fitting from the old cable sheath, screwed the old fitting onto the nose of the new one... And there I had a new-style cable sheath with the old style nose that will fit the narrower cable tube on the '74.

It's all installed and on the car now.

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Joined: December 21st, 2004, 3:04 am

September 1st, 2008, 6:23 am #8


Obviously, beer or no beer, she appears to have a better eye for problem solving than you do!

HAHAHA!

Best check with her first... THEN post here on Xweb!

Congrats btw... ya picked out a good car and a good women!


My best,



Tony
Black Tooth and me... since 1983!
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Eric Hamilton (Durham NC)
Eric Hamilton (Durham NC)

September 1st, 2008, 1:37 pm #9

"well, I guess you'll just have to get another Fiat - we have room"
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Joined: December 21st, 2004, 3:04 am

September 2nd, 2008, 6:48 am #10



My best,



Tony
Black Tooth and me... since 1983!
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<font face_"Times Bew Roman" size=1>Disclaimer: This message does not necessarily reflect the views of the sender, or, for that matter, any other carbon-based life form; Any resemblance to actual persons, living or dead, is unintentional and coincidental; All models are 18 years of age or older; Dry clean only, do not use bleach, Tumble dry and remove immediately; Do not bend, fold, staple or mutilate; Anchovies, cheese or jalapenos may be added to orders upon request for an additional charge; Professional driver on a closed course, do not attempt to duplicate; Your actual mileage may vary; No substitutions are allowed; Available for a limited time only while supplies last; Offers are void where prohibited by law; Humor is provided "as is" without any warranties expressed or implied; The user assumes full liabilities and originator is not liable for damages due to use or misuse; We are an equal opportunity employer, with no regard to race, religion, sex, or sexual preference; No shoes, no shirt, no service; Read at your own risk; This post may contain material some may find to be objectionable; Parental advisory: Explicit lyrics; keep away from pets and small children; limit one-per-family please; No money down; No purchase necessary; Ask us about our guns-for-dope trade-in plan; You need not be present to win; Some assembly required; Batteries not included; Action figures sold separately; Contents were packed full at the factory, but may have settled during shipping; Peanuts and peanut products are produced in this establishment and also consumed by the author; Sanitized and sealed for your protection; Do not use if safety seal is broken; Do not use while operating a motor vehicle or heavy equipment; Safety goggles may be required during use; Use gloves when handling; Call before you dig; Use only with proper ventilation; For external use only, if a swelling, redness, rash, or irritation develops, discontinue use; Do not place near a flammable or magnetic source; Keep away from open flames; Avoid inhaling fumes or contact with mucous membranes; Contents under pressure, may explode if incinerated; Smoking may be hazardous to your health; No smoking allowed, except in designated areas; The best safeguard, second only to abstinence, is the use of a good laugh; Text is made from 100% recycled electrons and magnetic particles; No animals were harmed while writing this post; No salt, MSG, preservatives, artificial color or flavor added; If ingested, do not induce vomiting, If symptoms persist, consult a comedian; Ribbed for your pleasure, slippery when wet; Must be 18 to enter; No one under 21 allowed; We check IDs to age 40; Seniors Welcome; Ask for our Senior Menu; Present discount coupons to cashier before totaling; An 18% gratuity will be added to the total for parties of 8 or more; We reserve the right to refuse service to anyone. Return all carts to the store; No dogs allowed, except for the visually impaired; Penalties for early withdrawal, one size fits all; Offer is valid only at participating sites; Prices slightly higher west of the Rockies; Allow four to six weeks for delivery; If defects are found, do not attempt a repair, return to an authorized service center; Please remain seated until the vehicle has come to a complete stop; Objects in the mirror may be closer than they appear; Fasten seat belts; In the unlikely event of a loss of cabin pressure, oxygen masks will fall from above, cover your face first, then assist those around you. Your seat cushion may be used as a floatation device. This disclaimer is invalid in the event of hurricanes, floods, earthquakes, sonic booms, vibration, electromagnetic radiation from nuclear blasts or any other act of war, unauthorized repair, improper installation, misuse, typos, misspelled words, missing or altered signatures, and incidents owing to computer or disk failure, accidental file deletions, and Acts of God. Other restrictions may, or may not apply.</font>
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