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Zx 5 speed rebuild


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8 hours ago, Dave WM said:

I thought that hole needed to line up with the oil trough.

The originals did'nt have the hole. The swirl form in the bush pulls oil through the bush to lubricate and help cool it and provide some oil to the seal. The oil can then flow back through the drain back to the transmission.

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9 hours ago, EuroDat said:

The originals did'nt have the hole. The swirl form in the bush pulls oil through the bush to lubricate and help cool it and provide some oil to the seal. The oil can then flow back through the drain back to the transmission.

that's odd, i went thru my stash and found my OE bush, it had two ovals holes about 45 degrees apart, EuroDat yours had no holes at all? now I am confused, OP check your original bushing and get back to us.

I looked back at your pic, I also could not see the center ring in the middle like my OE one has, but was not sure if it was just hidden by the shadow.

I found the pic of my old one from my trans rebuild, the one on the right. the one on the left is the short one, not the omega that I ended up using.

100_1106.thumb.JPG.98042310ab55fc5bf9b696efc91e8b18.JPG

Edited by Dave WM
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Hi Dave,

I still have my old one laying around somewhere, but I know it didn't have any holes in it like the two 71C trannies I have. Maybe somewhere in the 71B production they started fitting them with the holed versions?

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So I got the shifter cap off

I tried to just bang it out with the shifter rod against a block but had to make an anvil and hit it with a brass hammer.

20210620_141642.jpg20210620_141940.jpg

So now I'm stuck again

You can see the shaft seal right here

20210620_142115.jpg20210620_145044.jpg20210620_145038.jpg

but I can't get it out... It appears to have a brass bushing about 15mm long behind it. I didn't know if I could drive it all out? I tried to use a pick but it's stuck pretty good. Might be nice to replace the bushing if I could find a correct replacement

@EuroDat

@Dave WM

 

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I wouldn't drive out the brass bush. Never heard of one needing replacement and you would need to get it fabricated.

All I use is a length of 2.5 or 3 mm welding rod, with flux removed, and flatten (to about 1.5mm thick) the last 5mm with a hammer on a vice or anvil. Then bend the last 3 to 5mm to 90 degrees. Use it as a hook. You can get that behind the seal and pull it out. They should come out easily unless someone has glued it in.

Yours looks like the last person to rebuild the transmission put it in backwards or it could be the photos. The lip in the seal should point towards the transmission.

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19 hours ago, Patcon said:

Here is the old bushing. Original, I believe... No holes

20210620_141141.jpg20210620_141143.jpg20210620_141145.jpg20210620_141149.jpg

 

thats completely different from the one that came out of mine, besides the two holes, it was a single piece, with not joints, that one seems to have the same joint as the short ones sold in the rebuild kits.

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1 hour ago, Dave WM said:

thats completely different from the one that came out of mine, besides the two holes, it was a single piece, with not joints, that one seems to have the same joint as the short ones sold in the rebuild kits.

My old bushing was just like yours Charles @Patcon with the same locking tabs. I have seen this style in the 71B. Can't find my old one anymore. I checked the spare 71C I have and it is hard to see with the main shaft in place, but it looks like it's slotted (2 holes) like Dave WM described.

I know the originals had no holes, but later the did. Can't remember exactly when, but I thought it was in the 280ZX when they changed. Most probably after 82 because the 82 close ratio I have had the old style as well.

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Patcon, did you end up replacing that rubber seal?  I believe it is called a striking rod oil seal.  I'm looking for a part number.  It looks like I will need to drop my tranny since either that seal or the o-ring is leaking.

Thanks for any input. 

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Never mind, I think I found it.

For reference, the Seal P/N is 32858-U6702

                         the O Ring # is 32710-14600.

The local Nissan parts desk does not stock them but says they can order and have next day.  

Hope this helps anyone else in the same predicament. 

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22 hours ago, tlorber said:

Never mind, I think I found it.

For reference, the Seal P/N is 32858-U6702

                         the O Ring # is 32710-14600.

The local Nissan parts desk does not stock them but says they can order and have next day.  

Hope this helps anyone else in the same predicament. 

The sizes for these two parts are:

The seal is a 14/20 x 4.2mm NBR Lip seal (ID/OD x thickness)

And the O-ring is 24x2.5mm (IDxCross section)

 

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Thanks for the link Chas!

All thats assembled and I had a very kind forum member ship me a really nice used 23t gear which we used

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  • 4 weeks later...

I have the tranny all put together. Seems to bench shift ok. Hopefully in the next 6 months we will get to road test it. We'll see

Thanks for everyone's help!!

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