Friends of the Professional Car Society - Official Website of the Professional Car Society, Inc.Friends of the Professional Car Society - Official Website of the Professional Car Society, Inc.



Go Back   Friends of the Professional Car Society - Official Website of the Professional Car Society, Inc. > Professional Car Discussion > Technical Discussion Forum

Technical Discussion Forum For the discussion of technical questions about Professional Cars and their repair and maintenance. Posting in this forum is limited to PCS Members and / or Site Supporters. We encourage all website users to become members of the Professional Car Society and / or become Site Supporter.

Reply
 
Thread Tools Display Modes
  #1  
Old 08-31-2009, 09:48 AM
Richard Vyse Richard Vyse is online now
Website Member
 
Join Date: Mar 2009
Location: New Smyrna Beach FL 32168
Posts: 5,111
Thanks: 6,061
Thanked 6,951 Times in 2,288 Posts
Groans: 2
Groaned at 13 Times in 5 Posts
Default Speedometer Cable

Can someone inform me just how difficult it is to change the speedometer cable on a 1973 Cadillac. TKS
Just got a new cable in and will attempt to change this myself.
Reply With Quote
  #2  
Old 08-31-2009, 10:04 AM
Paul Steinberg Paul Steinberg is offline
PCS Past President / Senior Website Administrator
 
Join Date: Mar 2009
Location: Woodstock CT 06281
Posts: 6,180
Thanks: 6,386
Thanked 11,407 Times in 3,728 Posts
Groans: 0
Groaned at 9 Times in 9 Posts
Default

It depends on what you are changing. If you are changing only the cable itself, then it is as easy as disconnecting the speedometer cable housing from the transmission and pulling the old cable out and inserting the new, and then hooking up the cable housing to the transmission again. If you are changing both the cable housing and shaft as a unit, then you have to route the new one exactly the way that the old one was routed, so there are no kinks. If the old cable shaft has broken, then you need to disconnect the cable housing from both ends to get both ends of the shaft out. If you have skinny hands like a 5 year old, you shouldn't have much problem reaching up under the dash and getting the cable released. If you have adult hands, then it might be easier to dismantle the speedometer cluster to get at the back to release the cable. If you have never done this job before, then expect to spend a few hours cursing, and getting you hand and arm scratched. I have done them, but they are never really easy, unless it is a shaft replacement of a complete shaft. Then for the last question....... How do you know it is the cable, and not the speedometer head itself???
__________________
"When a man opens a door for his wife, it's either a new car or a new wife."
Reply With Quote
  #3  
Old 08-31-2009, 10:13 AM
John ED Renstrom's Avatar
John ED Renstrom John ED Renstrom is offline
PCS Elected Director 2016 - 2018
 
Join Date: Mar 2009
Location: Hot Springs SD 57747
Posts: 10,898
Thanks: 3,837
Thanked 14,106 Times in 5,944 Posts
Groans: 2
Groaned at 3 Times in 3 Posts
Default

first off all put 911 on speed dial. but then it's not two bad a job. you just changing the cable or the cable and housing? underneath the car is easy the hard part is digging the strap or two out of the undercoating. under the dash requires a small skinny hand and the patience of Job. putting the rubber grommet back in the fire wall and getting the threaded collar being the hard part. if your just changing the cable in the housing then take both ends lose pull your broken one out. both pieces, lay them on the ground next to the new one. cut it to size. put you drive end on and slide it back in from the top.
about a hr task or 100 bucks down town. man with no experance should get it done in at least 3 hr and 2 cups of coffee. or 6 hr and 12 beers. then take it to the shop the next day.
__________________
drop in for coffee anytime
Reply With Quote
  #4  
Old 08-31-2009, 10:57 AM
Richard Vyse Richard Vyse is online now
Website Member
 
Join Date: Mar 2009
Location: New Smyrna Beach FL 32168
Posts: 5,111
Thanks: 6,061
Thanked 6,951 Times in 2,288 Posts
Groans: 2
Groaned at 13 Times in 5 Posts
Default

Changing the cable and cable housing.
Reply With Quote
  #5  
Old 08-31-2009, 11:22 AM
Joe Rackov Joe Rackov is offline
Website Member
 
Join Date: Aug 2009
Location: Howell Michigan
Posts: 184
Thanks: 14
Thanked 141 Times in 82 Posts
Groans: 0
Groaned at 0 Times in 0 Posts
Default

That speedometer cable should have a spring clip at the speedometer, depress and pull the cable away from the speedo head.

One fly in the ointment may be IF the vehicle has a cruise control on it.
If it does, you need to unscrew the cables, two different sizes, they only go on one way and make sure that the unit turns freely. If not, it will snap the cable tips which are plastic (nylon?) off. This was a real common problem with the mechanical transducers of that era. If there is a ratio adapter on the cable, also check that for free turning also.

Rebuilt cruise tranducers used to be real common, I could probably locate one fairly easily for you if needed.

You can replace just the inner cable, but if there any signs that the outer cable plastic has been compromised (heat melted, deep cut) replace the cable and case assy.

Still waiting for my pre '75 parts catalog to arrive, some day I'll be some help!
Reply With Quote
  #6  
Old 09-01-2009, 09:20 AM
Richard Vyse Richard Vyse is online now
Website Member
 
Join Date: Mar 2009
Location: New Smyrna Beach FL 32168
Posts: 5,111
Thanks: 6,061
Thanked 6,951 Times in 2,288 Posts
Groans: 2
Groaned at 13 Times in 5 Posts
Default

Well I changed the cable last night with no issues. Rather simple actually. Had to remove the lower portion of the dash so I could access the clip on the back of the speedometer. Pull it out follow to the tranny and install the new one. Had a bit of a fright though while under the car attaching the new cable. I look over and see a black snake slithering by. Crap!!! Heart skipped a beat but black snakes are good snakes down here so he kept going and I kept going.
Reply With Quote
  #7  
Old 09-01-2009, 10:24 AM
John ED Renstrom's Avatar
John ED Renstrom John ED Renstrom is offline
PCS Elected Director 2016 - 2018
 
Join Date: Mar 2009
Location: Hot Springs SD 57747
Posts: 10,898
Thanks: 3,837
Thanked 14,106 Times in 5,944 Posts
Groans: 2
Groaned at 3 Times in 3 Posts
Default

hardest part of the job is deciding to do it.
__________________
drop in for coffee anytime
Reply With Quote
  #8  
Old 09-01-2009, 10:33 AM
Mike Stevens Mike Stevens is offline
PCS Member
 
Join Date: Mar 2009
Location: Springfield OH 45505-3159
Posts: 1,526
Thanks: 1,568
Thanked 1,385 Times in 610 Posts
Groans: 0
Groaned at 0 Times in 0 Posts
Smile good snake or?

Most of us know black snakes are in the good category. But to have one supervising a repair while you are under the car would get your attention. At least now you know he is not in the car.
Mike
Reply With Quote
  #9  
Old 09-01-2009, 01:45 PM
Russell Dalziel Russell Dalziel is offline
President MotorCity Chapter
 
Join Date: Mar 2009
Location: Troy MI 48083
Posts: 836
Thanks: 5,936
Thanked 519 Times in 355 Posts
Groans: 1
Groaned at 1 Time in 1 Post
Talking Black Snake

Quote:
Originally Posted by Richard Vyse View Post
Well I changed the cable last night with no issues. Rather simple actually. Had to remove the lower portion of the dash so I could access the clip on the back of the speedometer. Pull it out follow to the tranny and install the new one. Had a bit of a fright though while under the car attaching the new cable. I look over and see a black snake slithering by. Crap!!! Heart skipped a beat but black snakes are good snakes down here so he kept going and I kept going.
Richard are you Sure that wasnt the CABLE You saw Slithering around LOL


Russ
Reply With Quote
  #10  
Old 09-01-2009, 02:05 PM
Richard Vyse Richard Vyse is online now
Website Member
 
Join Date: Mar 2009
Location: New Smyrna Beach FL 32168
Posts: 5,111
Thanks: 6,061
Thanked 6,951 Times in 2,288 Posts
Groans: 2
Groaned at 13 Times in 5 Posts
Default

Quote:
Originally Posted by Russell Dalziel View Post
Richard are you Sure that wasnt the CABLE You saw Slithering around LOL


Russ
U R a funny man...
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Carb throttle cable end Richard Vyse Wanted 11 12-02-2011 10:44 PM
Welding cable used for Q2B Terri Vyse Emergency lighting and Sirens 10 06-13-2010 12:11 PM
Speedometer Cable Josh Gentry Technical Discussion Forum 22 03-18-2010 05:28 PM
Speedometer cable length? Richard Vyse Technical Discussion Forum 17 12-02-2009 10:41 AM
Speedometer accurate? No worries now... Dwayne Brooks Technical Discussion Forum 7 08-07-2009 11:23 PM


All times are GMT -4. The time now is 12:26 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright 2009 - 2018 Friends of the Professional Car Society