speedo gear issues
Thread Starter
Instructor
Joined: Dec 2006
Posts: 167
Likes: 0
From: Oxnard/San Luis Obispo CA
speedo gear issues
The gear for the speedometer doesn't seem to contacting the output shaft on the transmission causing the speedometer needle to be either jumpy or not register at all. If I take the sending unit/ cable out of the transmission the gear seems to be in working order.
When I put it back in I get the hold down tab in the slot and tighten it down a reasonable amount. once everything is tightened down the sender seems kinda loose in the hole, and I think this is why I have the speedometer issues.
Is there any way I can fix this short of RTVing the sender into the hole?
When I put it back in I get the hold down tab in the slot and tighten it down a reasonable amount. once everything is tightened down the sender seems kinda loose in the hole, and I think this is why I have the speedometer issues.
Is there any way I can fix this short of RTVing the sender into the hole?
Melting Slicks
Joined: May 2005
Posts: 2,826
Likes: 3
From: Tennessee
If you take the speedo cable out of the transmission, use a drill and grab the inner braided cable and spin it up on the drill. This way, you can make sure it is not the cable that is kinked or something. If this makes the speedo turn without jumping, you can rule out the cable and gear. 
With the cable out, can you get a finger up inside the tail housing and feel the driven gear on the output shaft? Try and turn it and make sure it has not come loose.
I don't think RTV will hold the cable tight in the hole opening, you might just have to replace the cable and be done with it, if all else fails.
Richard
Tech Support
With the cable out, can you get a finger up inside the tail housing and feel the driven gear on the output shaft? Try and turn it and make sure it has not come loose.
I don't think RTV will hold the cable tight in the hole opening, you might just have to replace the cable and be done with it, if all else fails.
Richard
Tech Support
Thread Starter
Instructor
Joined: Dec 2006
Posts: 167
Likes: 0
From: Oxnard/San Luis Obispo CA
If you take the speedo cable out of the transmission, use a drill and grab the inner braided cable and spin it up on the drill. This way, you can make sure it is not the cable that is kinked or something. If this makes the speedo turn without jumping, you can rule out the cable and gear.
With the cable out, can you get a finger up inside the tail housing and feel the driven gear on the output shaft? Try and turn it and make sure it has not come loose.
I don't think RTV will hold the cable tight in the hole opening, you might just have to replace the cable and be done with it, if all else fails.
Richard
Tech Support
With the cable out, can you get a finger up inside the tail housing and feel the driven gear on the output shaft? Try and turn it and make sure it has not come loose.
I don't think RTV will hold the cable tight in the hole opening, you might just have to replace the cable and be done with it, if all else fails.
Richard
Tech Support
Racer
Joined: Mar 2001
Posts: 272
Likes: 3
From: Marion Ia
Pull the gear and look at it very closely. I thought mine was fine, but was having the same issues, it would show OK with the drill and would read fine until I got to 25 mph then it would drop and then read zero. When I got a new gear and compared it the teeth were flatter and I was only getting friction contact. the new gear fixed all problems.
