Diagnosing a speedometer problem
#1
Diagnosing a speedometer problem
Hey:
My first posting! I'm excited about finding this resource. What a great idea.
My '49 Merc p.u. had the speedo quit. The real question is, how to a diagnose where the problem is: easy enough to check the cable itself, but how do you know if the problem is at the tranny or the speedo?
The cable is a square end of type 8C-17260-A.
My first posting! I'm excited about finding this resource. What a great idea.
My '49 Merc p.u. had the speedo quit. The real question is, how to a diagnose where the problem is: easy enough to check the cable itself, but how do you know if the problem is at the tranny or the speedo?
The cable is a square end of type 8C-17260-A.
#2
Welcome to FTE! This website is one of my primary resources on these old trucks and there's good people involved. Very little of the posing and mudslinging you see on other forums.
The speedo on my truck is also broken, but I haven't dug into it yet to figure out why. Hopefully somebody who has fixed a broken speedo will chime in and describe the system and we both will benefit!
ROB
The speedo on my truck is also broken, but I haven't dug into it yet to figure out why. Hopefully somebody who has fixed a broken speedo will chime in and describe the system and we both will benefit!
ROB
#3
#4
Thanks 54 gene
I've got it.
The speedo gear has been worn down. It engages with a worm gear in the tranny. Any ideas on where I can get a replacement? There's 19 teeth.
By the way Rob; not only do you have to take the cable off at the tranny, but you also have to remove the threaded end that the cable attaches to.
I've got it.
The speedo gear has been worn down. It engages with a worm gear in the tranny. Any ideas on where I can get a replacement? There's 19 teeth.
By the way Rob; not only do you have to take the cable off at the tranny, but you also have to remove the threaded end that the cable attaches to.
#5
Join Date: Apr 2002
Location: Littleton, New Hampshire
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Originally Posted by dawsrobe
Thanks 54 gene
I've got it.
The speedo gear has been worn down. It engages with a worm gear in the tranny. Any ideas on where I can get a replacement? There's 19 teeth.
By the way Rob; not only do you have to take the cable off at the tranny, but you also have to remove the threaded end that the cable attaches to.
I've got it.
The speedo gear has been worn down. It engages with a worm gear in the tranny. Any ideas on where I can get a replacement? There's 19 teeth.
By the way Rob; not only do you have to take the cable off at the tranny, but you also have to remove the threaded end that the cable attaches to.
Vern
#6
Dawsrob you can get the part right in Pickering not far from you go to www.fordantiqueparts.com it is called Absolete ford truck parts hope it is a help to you.
#7