Saginaw 4 speed..... Final Saga

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Re: Saginaw 4 speed

Postby cjbiagi » Sun Apr 19, 2015 5:30 pm

Well I finally got my car back home from winter storage at my moms. So, that's at least a start......
Clyde.........75 Monza 2+2
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Re: Saginaw 4 speed

Postby dindin » Mon Apr 20, 2015 9:50 am

When I had mine rebuilt the guy Machined some oil grooves and added a drain plug..Just something to think about if you have not allready.

Al
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Re: Saginaw 4 speed

Postby cjbiagi » Mon Apr 20, 2015 12:08 pm

The new syncros have machined oil slots, not sure if the originals do or not. I will see when I take it apart. I assume that's where your mechanic machined the grooves?
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Re: Saginaw 4 speed

Postby dindin » Mon Apr 20, 2015 3:49 pm

On the main shaft he machines oil grooves into the main shaft for better lubrication to the gears..This process is done it the milling machine with a carbide ball end mill..

It was part of the rebuild process ..

Al
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Re: Saginaw 4 speed

Postby dindin » Tue Apr 21, 2015 1:39 pm

BTW my invoice shows $35.00 this procedure..

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Re: Saginaw 4 speed

Postby cjbiagi » Tue Apr 21, 2015 1:46 pm

Ok, well since I am doing the rebuild myself I won't be able to perform that operation but since the trans has lasted this long I guess it will be ok. I have read a lot about rebuilding these but never heard anything about that operation. I just want it to shift into gear smoothly. :lol: So what promted you to rebuild the trans? Were you having any issues?
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Re: Saginaw 4 speed

Postby dindin » Tue Apr 21, 2015 2:02 pm

I figured I am allready into this car for so much may as well do it now.. .he did replace my second gear though so something was up.

Al
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Re: Saginaw 4 speed

Postby cjbiagi » Tue Apr 21, 2015 8:29 pm

Got the car up on the lifts and removed the torque arm and driveshaft....that's it for tonight. I am getting too old for this :lol:
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Re: Saginaw 4 speed

Postby dindin » Fri Apr 24, 2015 9:47 am

Is it normal for oil to come out when you you pull the dirveshaft or was it from a bead seal??
just wondering if i should fill the transmission before I install mine.

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Re: Saginaw 4 speed

Postby cjbiagi » Fri Apr 24, 2015 1:44 pm

It is normal for some oil to leak if the yoke is removed, especially if it is tipped. I would not put oil into the trans until after it was installed.
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Re: Saginaw 4 speed

Postby cjbiagi » Fri Apr 24, 2015 9:35 pm

Well, the trans is out and on the bench. Once again, I am getting too old for this. Seems to be more work than than I remember :lol:
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Re: Saginaw 4 speed

Postby cjbiagi » Sun Apr 26, 2015 7:23 pm

Well, surprise, surprise. I think i found the cause of my shifting issues. Keep in mind I have had this problem since new and over 75,000 miles. This is my 1st/2nd slider assembly. This is where I thought the problem was (already purchased a NOS one) but I was not expecting to see this.
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Re: Saginaw 4 speed

Postby crawfw » Sun Apr 26, 2015 8:14 pm

Could you see it was broke before removing the shaft from the trans casing or did you have to remove the outer part of the slider to see it?
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Re: Saginaw 4 speed

Postby cjbiagi » Sun Apr 26, 2015 9:28 pm

No, I could not tell until I took it apart. It's the inner part of the slider hub that was broke so the outer part was actually holding the whole thing together. Once I separated the two pieces then I saw what was happened. Funny thing is as I continued to work on it tonight another section (there are 3 sections) was cracked! I can't believe the trans still functioned at all and held up for as long as it did. The fact that I had this problem since the car was new is absolutely baffling, we are talking 75,000 miles. Oh well, I have the mainshaft completely disassembled, still have to remove the cluster gears and get everything cleaned up before assembly. It will be a few weeks before I get it all back together but I am thrilled that I actually found what was wrong. Now I just have to take my time and get it put back together correctly as I do not want to do this again. Here's the new slider assembly put together and then just the inner hub, that is the part that is broke.
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Re: Saginaw 4 speed

Postby cjbiagi » Wed Apr 29, 2015 8:20 pm

Well, slow progress but the trans is now completely disassembled and everything cleaned that I am reusing. Next will be to start reassembly. I can honestly say I have learned a lot about manual transmissions from this experience. I won't claim complete victory until it is done and I am driving it but it's been enlightening.
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