M-21 lube leaking out of the speedo cable

[JohnZ]

John do you have another part number for the seal? What I got today at NAPA was for an automatic transmission and they did not have the part number for the bullet.

Thanks!

The GM part numbers for the fitting w/seal and for the seal by itself are as I posted above. Paragon has the fitting w/seal (their #7188K) and the seal by itself (their #10481). Pre-1966 fittings (bullets) aren't machined to accept the seal.

[sixt9x33rs]

John,

I was able to buy a new bullet for $5 from a local transmission shop. I put it in last night. I will take the car for a nice long drive and see what happens.

Thanks!

[sixt9x33rs]

This is a follow up to the earlier post:

As I mentioned I have replaced the speedometer cable bullet and things seem to be fixed, but now I am getting the same issue as before. Oil walking up the cable dripping out on my foot at the point the cable connects to the speedometer.

Any ideas of what may be happening?

Thanks,

[JohnZ]

This is a follow up to the earlier post:

As I mentioned I have replaced the speedometer cable bullet and things seem to be fixed, but now I am getting the same issue as before. Oil walking up the cable dripping out on my foot at the point the cable connects to the speedometer.

Any ideas of what may be happening?

Thanks,

Does the new "bullet" you got at the transmission shop have the black rubber seal in it around the end of the plastic gear, or is it the old style without the internal seal? If it has the seal, you shouldn't see any leakage up the cable.

[sixt9x33rs]

John it has the seal, and it worked for awhile. I bought a second bullet as a backup so I guess I will put that one in and see what happens. I guess there is not another culprit?

Thanks,

Lawrence

This is a follow up to the earlier post:

As I mentioned I have replaced the speedometer cable bullet and things seem to be fixed, but now I am getting the same issue as before. Oil walking up the cable dripping out on my foot at the point the cable connects to the speedometer.

Any ideas of what may be happening?

Thanks,

Does the new "bullet" you got at the transmission shop have the black rubber seal in it around the end of the plastic gear, or is it the old style without the internal seal? If it has the seal, you shouldn't see any leakage up the cable.

[JohnZ]

John it has the seal, and it worked for awhile. I bought a second bullet as a backup so I guess I will put that one in and see what happens. I guess there is not another culprit?

A bad seal (or no seal) is the only reason I can think of for trans lube to climb the flex shaft.

[mark x22]

Could the cable be damaged cutting the new seal ?

[sixt9x33rs]

John it has the seal, and it worked for awhile. I bought a second bullet as a backup so I guess I will put that one in and see what happens. I guess there is not another culprit?

A bad seal (or no seal) is the only reason I can think of for trans lube to climb the flex shaft.

ok I am going to put the spare bullet in there and see what happens.

[L78 steve]

Check the plastic gear also where the seal contacts for damage.