Questions about some axles I just bought

RockyMountain_TJ

RockyMountain_TJ

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Joined
Mar 2, 2023
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44
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Littleton, CO
So I have just recently bought a pair of axles, Dana 30 and a Dana 44 rear, geared to 3.73 to replace my stock 30/35 axles. I just installed the new front and was working on getting the brand new hubs and shafts I installed on my old 30 onto the new 30 when I noticed the new 30 does not spin freely when I have my hand on the output driveshaft shaft, my old one spins freely at the hub when the output shaft is bound.

Did I buy a grenaded axle?
Or did this guy not know he had an auto locker installed?
Is there any way for me to check the rear 44? It is still on the ground right now waiting to be cleaned up and painted.

Thanks!

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Since there not installed yet, I would put them on a pair of jackstands with the diff cover pointed up and open them up to take a look.

Edit: saw the front is installed. I would still pull the cover to verify what you have. I would specifcally verify that the gear ratios match. you don't want to find out the hard way that they don't.
 
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hosejockey61 said:
When verifying the gear ratios, there will be numbers on the side of the ring gear. Take a pic of that and post it up.
Click to expand...

I don’t have any gear oil in the garage quite yet do I run any ris
hosejockey61 said:
When verifying the gear ratios, there will be numbers on the side of the ring gear. Take a pic of that and post it up.
Click to expand...

Update time it looks like I have some sort of auto locker installed, cool! Here’s some photos. Also looks like some debris got into the gears. Maybe from the axle tubes? Looks like sediment. Ring gear teeth also look like they are in good shape.

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UsefulChewtoy said:
I don’t have any gear oil in the garage quite yet do I run any ris


Update time it looks like I have some sort of auto locker installed, cool! Here’s some photos. Also looks like some debris got into the gears. Maybe from the axle tubes? Looks like sediment. Ring gear teeth also look like they are in good shape.

View attachment 501643
Click to expand...

Isn't that upper bushing supposed to be fully pushed into the hole?
 
xXDavidCXx said:
Isn't that upper bushing supposed to be fully pushed into the hole?
Click to expand...

I don’t think so but I could be very wrong. I just pressed those in yesterday and on the replacement bushings there was a “collar” or notch. My old axle is pushed in that far and the ones I replaced were also pushed in that far.
 
UsefulChewtoy said:
I don’t have any gear oil in the garage quite yet do I run any ris


Update time it looks like I have some sort of auto locker installed, cool! Here’s some photos. Also looks like some debris got into the gears. Maybe from the axle tubes? Looks like sediment. Ring gear teeth also look like they are in good shape.

View attachment 501643

View attachment 501644

View attachment 501645
Click to expand...

You do have 3:73's 👍 Yep on the auto locker. And yep on the junk in there.... Clean it out!
tworley said:
Your bearing caps are upside down.
Click to expand...
They are on the wrong sides. OP... See the letter Y stamped on each side of the housing where the cover seats? Those letters are also on the bearing caps. They are there to ensure the caps are oriented correctly. Seal them and match the orientation. Torque specs are in the FSM which is located on this forum somewhere.
 
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UsefulChewtoy said:
I don’t think so but I could be very wrong. I just pressed those in yesterday and on the replacement bushings there was a “collar” or notch. My old axle is pushed in that far and the ones I replaced were also pushed in that far.
Click to expand...

No, the upper clevite bushing only goes in that far. Normal.
 
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If you can find some numbers stamped on the auto locker, you might be able to id as well. I have a Torque Masters Torq locker in mine and confidently rule that one out.
 
@hosejockey61 , what do those numbers on the ring gear tell you so that you know they are 3.73? Is it just the part number or something?
 
hosejockey61 said:
You do have 3:73's 👍 Yep on the auto locker. And yep on the junk in there.... Clean it out!

They are on the wrong sides. OP... See the letter Y stamped on each side of the housing where the cover seats? Those letters are also on the bearing caps. They are there to ensure the caps are oriented correctly. Seal them and match the orientation. Torque specs are in the FSM which is located on this forum somewhere.
Click to expand...

Ahhhhh crap. Okay looks like I have a little project tomorrow.

What’s the consensus on lube locker diff gaskets?

I picked up a FSM at a swap meet at Bandimere Speedway (rip) so I’ll see what I can find in there.

Just going by looks I think I have an Aussie locker.
 
You can download the FSM in the resources section. I'd be curious to see if there are any differences between your print copy.

I like my lube locker gasket. Some folks who like to bash rocks alot don't like them as much.

-Mac
 
I love lube lockers. Some don't. 🤷

When you say FSM, do you mean Haynes or Chilton? If so, toss it in the trash. If you bought a true FSM, it would be about 1200 pages long.
 
hosejockey61 said:
I love lube lockers. Some don't. 🤷

When you say FSM, do you mean Haynes or Chilton? If so, toss it in the trash. If you bought a true FSM, it would be about 1200 pages long.
Click to expand...

Ah okay, it’s probably not an FSM then. It’s a decently large red book. I haven’t really used it too much. Just bought it because I thought it wouldn’t be a bad thing to have on the shelf.
 
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