My speedo quit working the other and I noticed some oil around the pinion gear. I tried to loosen the speedo cable and the pinion gear just pulled out of the tranny because the little ear piece was loose and ahd turned. I know there are O rings and seals for the gear and the cable, but can't find and diagrams to show where they go, the only one I know for sure( also the only one I found) is the O ring around the gear holder. I need to replace the black gear as its sorta chewed up. The tranny is a 79 Z 5 speed and the cable is the stock 75. I need a diagram of some sort to know what goes where and I can't find it in the FSM. Any help would be greatly appreciated, thanks.

I found this, http://www.classiczcars.com/forums/help-me/41728-speedometer-not-working.html, maybe something there that is useful?

Something like this:

FWIW,

Carl B.

Thanks Carl, where did you find that? I got the O ring covered but not real sure about the oil seal part #60. MSA has a large and a small O ring, is the oil seal actually an O ring? I assume it goes into the pinion gear housing or does it go over the end of the cable? I looked at that thread and it has good pics of the parts all layed out, but none of them put together. Thanks again.

Edited September 24, 201311 yr by mjr45

I have purchased one of these a few years ago from the same vendor - worth every penny. You may want to grab it while you can. It will pay for itself quickly - just give the item code to your Nissan dealer and if it is still being made you will not have to go to MSA anymore - my parts manager gives me his body shop rate.

Datsun S30 240Z 260z 280z Fairlady LH Parts Catalog 1977 USA Canada Model | eBay

Here's a link to more than you would ever want to know about the o-ring & seal. Just scroll down through the messages to find procedure and part numbers.

http://tinyurl.com/cf4yvcc

Also, see details below.

Dennis

Thanks guys for the help, I believe I know what to do now. I'll try the drill bit trick to see if I can get the oil seal out, now that I know what I'm looking for. Thanks again.

Edited September 25, 201311 yr by mjr45