Speedo gear/speedo angle parts

[2wrench]

This is where I started. I purchased an overdrive unit
rebuilt from a nice gentleman in New Zeland.

Purchased the speedo angle drive that should fit by year
and make from "local" vendor. These parts did not fit
and looked like this:

I received a speedo angle drive from the rebuilder in
New Zealand and the part fit right into place as follows:

Lastly, I show the two parts abutted one to another. By the
books, the chromed part that doesn't fit should. I note for
others who may buy from Down Under.

Still working to get the speedometer to function properly.

 

[2wrench]

Sorry for the double pic post.

 

[TR3driver]

Any chance you could measure the square cable part?

 

[Brosky]

Why is one longer than the other in the cable area?

 

[2wrench]

Any chance you could measure the square cable part?

Randall: The square part on the chrome part that did not fit is: .101

I think I finally installed the "correct," part well....(meaning
no oil leaks, I think,) so I'm reluctant to remove and measure it.
It has to be smaller, though.

If the info is valuable to the Forum, I'll take the hit for the team
and go pull it again and measure it. I suppose practice makes perfect.

 

[2wrench]

Why is one longer than the other in the cable area?

You got me, Paul. I've been trying to figure for a while.
I remember a pic you posted of your angle drive. Your part also
appears to be brass at the knurled part instead of chrome. The part
that has seemed to fit for me is also brass at the knurled part.

Just something I noticed.

 

[DNK]

Why is one longer than the other in the cable area?

Common on the cables. There has been many a mention of this thru the years I have been a member. Nobody has quantified it yet.

 

[TR3driver]

If the info is valuable to the Forum, I'll take the hit for the team and go pull it again and measure it.

There is certainly no need to do that on my account!
But it does reinforce my opinion that your NZ rebuilder has supplied the wrong gear, and the wrong angle drive to match. In this case, two wrongs do make a right, it seems.

 

[2wrench]

If the info is valuable to the Forum, I'll take the hit for the team and go pull it again and measure it.

There is certainly no need to do that on my account!
But it does reinforce my opinion that your NZ rebuilder has supplied the wrong gear, and the wrong angle drive to match. In this case, two wrongs do make a right, it seems.

Well, not necessarily. Problem is, my speedometer is not working.

I have removed the angle drive and have a correction to make to a previous post.
The chrome speedo angle drive bought from one of the "local vendors," is actaully
.125.

The replacement part that I received from New Zeland is .100. So there is a .025 difference.

Also, weird experience: Removing the NZ speedo angle from the overdrive unit and then
disconnecting the speedo cable from the back of the speedometer, if I attempt to turn
the speedo cable by turning the cable end of the angle drive, I get nothing at the
speedometer end of the cable.....but, if I turn the cable end at the speedometer side which
was disconnected from the speedometer, it does turn the cable end at the far side of the
speedo angle. Is that clear?? It's weird. The cable turns from one side and not the other;
and the side it turns from is the wrong side...more like the receiving end instead of the
driving end. Sheeeesssshhhhhh. If you read this, I know you're a friend.

Figure if I buy a new speedo gear, the darned thing probably won't fit the overdrive. Just
my luck.

Do you think I could also need one of the speedo cables that are two-part cables?
I'm hunting....a pig and a poke....

Thinking to change my name to exasperated-in-california.......

 

[TR3driver]

So, either the angle drive, or more likely the connection between the angle drive and the speedo cable, won't carry the torque required to turn the speedo cable. If you stop the cable end of the angle drive with your fingers and turn the speedo end, I think you'll find that it slips that way, too.

I would probably start by looking to see if attaching the angle drive pushed the inner cable though the outer cable. Remove the angle drive and push the inner cable in from the speedo end as far as it will go (there should be a plastic collar that hits the inside of the outer cable). Then reconnect the angle drive and be sure the inner cable can be pushed back where it was.

If that seems OK, then I would suspect that the square on the speedo cable is too small to firmly engage the socket inside the angle drive.

Of course, the angle drive itself might be slipping internally, but I've never seen one do that. Find a small screwdriver or something that will engage the socket inside the AD to find out.