Speedometer gear and o-ring replacement
Thread Starter
Drifting
Joined: Mar 2014
Posts: 1,738
Likes: 276
From: Akron OH
Speedometer gear and o-ring replacement
This is a question about replacing my speedometer gear and o-ring on my ’71 with an M20 4-speed.
I had initially planned to drive the front wheels up on ramps so I can pull the cable and speedo gear out of the transmission. I’ll change the o-ring while I have the cable out. The ramps will make the front of the car 10-12 inches higher than the back of the car. This bring me to my question: Will the incline of the car while it is on ramps cause the gear lube to gush out of hole when I pull the speedometer cable out of the transmission? Common sense says yes, but I’ve learned not to apply common sense when working on a C3!
Thanks,
Rick
I had initially planned to drive the front wheels up on ramps so I can pull the cable and speedo gear out of the transmission. I’ll change the o-ring while I have the cable out. The ramps will make the front of the car 10-12 inches higher than the back of the car. This bring me to my question: Will the incline of the car while it is on ramps cause the gear lube to gush out of hole when I pull the speedometer cable out of the transmission? Common sense says yes, but I’ve learned not to apply common sense when working on a C3!
Thanks,
Rick
Last edited by AkrHack; Sep 1, 2015 at 12:56 PM.
Melting Slicks
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
This is a question about replacing my speedometer gear and o-ring on my ’71 with an M20 4-speed.
I had initially planned to drive the front wheels up on ramps so I can pull the cable and speedo gear out of the transmission. I’ll change the o-ring while I have the cable out. The ramps will make the front of the car 10-12 inches higher than the back of the car. This bring me to my question: Will the incline of the car while it is on ramps cause the gear lube to gush out of hole when I pull the speedometer cable out of the transmission? Common sense says yes, but I’ve learned not to apply common sense when working on a C3!
Thanks,
Rick
I had initially planned to drive the front wheels up on ramps so I can pull the cable and speedo gear out of the transmission. I’ll change the o-ring while I have the cable out. The ramps will make the front of the car 10-12 inches higher than the back of the car. This bring me to my question: Will the incline of the car while it is on ramps cause the gear lube to gush out of hole when I pull the speedometer cable out of the transmission? Common sense says yes, but I’ve learned not to apply common sense when working on a C3!
Thanks,
Rick
Or you could consider buying a floor jack and 4 safety stands and do the job the right way.......................
Thread Starter
Drifting
Joined: Mar 2014
Posts: 1,738
Likes: 276
From: Akron OH
Thanks,
Rick
Melting Slicks
Joined: Oct 2012
Posts: 2,156
Likes: 273
From: Dunedin NZ.
Why not put the front up on ramps and then jack up the back and use the jack stand there? I don't have a manual box so I can't comment on the oil loss. On the auto box it would be a struggle to access the cable with just the front up on ramps.
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,170
From: Hermosa
I don't know about the manual trans, but on the auto you can pull it out with the front wheels up on ramps and fluid doesn't pour out.
You could jack it from the side that the cable is on and that should insure no spillage.
You could jack it from the side that the cable is on and that should insure no spillage.
Thread Starter
Drifting
Joined: Mar 2014
Posts: 1,738
Likes: 276
From: Akron OH
Thanks to all that took the time to reply with their advise. Putting 2 jack stands on the right side of the car is an interesting idea that I had not thought of.
Last edited by AkrHack; Sep 1, 2015 at 08:57 PM.
