Build Rescuing a Basket Case '72 FJ40

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did you put rtv on the splines? sometimes the oil goes thru the splines. is the diff getting hot? if the bearings are worn it can get hot and push oil out sometimes.
I did not RTV the splines! Worth a try for sure! Thank you.

I'll be driving it home from work shortly, so I'll check the temp when I get home. Great suggestion.
 
Did you check the inside diameter of the seal to the pinion flange b4 installing for fitment?
 
Did you check the inside diameter of the seal to the pinion flange b4 installing for fitment?
Yes, it seemed like a typical oil seal type fit.

Diff does not appear to be getting hot. Was barely warm to the touch after 20 mins of driving.

Appreciate the advice, everyone!
 
Update: I’m an idiot.

Pulled the pinion flange again tonight, and it was perfectly dry. Not a hint of any sort of leaking past the seal. So I kind of resigned myself to pulling the third member and reinstalling with a fresh gasket BUT before doing that I decided to check one last time that all the nuts were tight, and that’s when I finally saw this:

IMG_4340.webp


Apparently when I installed this third, I just plain forgot to install that one stud and nut. So I dug one out of my bag of spares, zipped it in, and boom! No more leak. IDIOT!

Sorry to have wasted everyone’s time with this haha
 
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Oof.

The best lessons are the ones we teach ourselves sometimes.
 
I think I need to get some single-vision lenses for wrenching. When I’m working under the car I often end up looking up through the top of my progressive lenses, which has a weaker prescription, and as a result I can’t see NOTHIN

I’m definitely blaming my glasses for this little misadventure.
 
Update: I’ve been driving the 40 around town topless (not me, the truck), and it’s so much fun! Probably the most fun I’ve had driving a car. Overall it’s running well and has plenty of get up and go.

One thing I’ve noticed that I wanted to ask about: after I’ve been driving for a while, it gets harder to get into gear. Has anyone noticed this on their 40? I’m assuming it’s clutch-related. Maybe I need to lengthen the push rod a little to help with disengagement? Once cooled off it shifts normally again.

Three speed floor shift, three-finger clutch.

Any insight gratefully received.
 
Blead the clutch system, see if that fixes it. No then try adjusting the rod a little more out to specs.
Or one step further and flush the clutch system! Basically bleed it, but bleed it long enough that clean fluid comes out the bottom. There's not much total fluid in there so it's super easy and takes a fraction of the time of brakes. Old fluid can get weird in how it behaves hydraulicly.
 
Or one step further and flush the clutch system! Basically bleed it, but bleed it long enough that clean fluid comes out the bottom. There's not much total fluid in there so it's super easy and takes a fraction of the time of brakes. Old fluid can get weird in how it behaves hydraulicly.
The entire system is brand new, from soup to nuts (except for the clutch itself) but I will bleed it again to see if that helps.
 
Update: I’m an idiot.

Pulled the pinion flange again tonight, and it was perfectly dry. Not a hint of any sort of leaking past the seal. So I kind of resigned myself to pulling the third member and reinstalling with a fresh gasket BUT before doing that I decided to check one last time that all the nuts were tight, and that’s when I finally saw this:

View attachment 4202511

Apparently when I installed this third, I just plain forgot to install that one stud and nut. So I dug one out of my bag of spares, zipped it in, and boom! No more leak. IDIOT!

Sorry to have wasted everyone’s time with this haha
None of us have done anything that silly..... today.
 
Not really FJ40-related, but since I had posted some pics of my brother's van earlier in the thread, I thought I'd provide an update, as we spent the weekend on final bodywork and paint! We resprayed it the original Sierra Yellow using a 2k acrylic enamel. Turned out not bad!

van3.webp


van1.webp


van2.webp

van4.webp


We are just in the final reassembly stage of the van, and once it's done I'll be launching into my next project: my 1977 FJ55. I'm planning to document this next project on YouTube. I'll be starting a new build thread as well.
 
Not really FJ40-related, but since I had posted some pics of my brother's van earlier in the thread, I thought I'd provide an update, as we spent the weekend on final bodywork and paint! We resprayed it the original Sierra Yellow using a 2k acrylic enamel. Turned out not bad!

View attachment 4209571

View attachment 4209572

View attachment 4209573
View attachment 4209574

We are just in the final reassembly stage of the van, and once it's done I'll be launching into my next project: my 1977 FJ55. I'm planning to document this next project on YouTube. I'll be starting a new build thread as well.

Looking great! Hey, November 6-7-8 there is a BIG VW gathering down here. You and your brother should come join! My neighbor's VW has won 1st place in the contest part 3 years in a row. This year he is taking a convertible he just finished "for my wife" if we are to believe that. LOL. Below is a link to the website for the show, AND check out the T-shirt I got a couple of weeks ago when I donated blood:

FloridaBugJam.com – Volkswagen Car Show - https://floridabugjam.com/

VW Bus T-shirt.webp
 
The entire system is brand new, from soup to nuts (except for the clutch itself) but I will bleed it again to see if that helps.
I was able to resolve my clutch issues. Turns out it was an issue with the clutch fork push rod length. I was messing around with things and somehow got it to the point where it wouldn’t go into gear at all lol. So I pulled out my trusty service manual and started from scratch: set the pedal height and free play, and then set the push rod free play. In the end I had to add about 3/4” to the length of the rod.

Not sure how I got it so wrong when I first installed my new clutch slave cylinder, but it seems to be sorted now. I also bled the system, for good measure. Thanks again for all the advice.
 
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