TDI Comanche Build

[The_Lobbster]

I need some help with the NV241OR, everywhere I read to not open the oil pump on the , however, the case is shattered. My new case arrived sans pump, so I removed the bolts and swapped it over. I cleaned everything with brake clean and then sprayed with WD40. Am I hosed? I really didn’t have any other option. The pump is not a sealed unit with an input seal from what I’ve found, unless this case was opened before and it was left out.


Need some input before I completely reassemble.

 

[bryson]

Oil pump on...? The TDI? The transfer case?

 

[The_Lobbster]

Oil pump on...? The TDI? The transfer case?

That was my bad, on the 241 transfercase. Kinda wishing I had waited, and bought the Atlas that’s for sale on here now.

 

[RockChucker]

I’ve heard that too, and my guess is that disassembling has a chance of causing one of gears in the pump to be off center. Kinda like this video of an LS oil pump shows. I don’t know how these principles could be applied to the 241 pump though.

 

[The_Lobbster]

I’ve heard that too, and my guess is that disassembling has a chance of causing one of gears in the pump to be off center. Kinda like this video of an LS oil pump shows. I don’t know how these principles could be applied to the 241 pump though.

That’s precisely my thought too. The pump is bolt centric, no dowels or anything to keep it perfectly centered. Maybe I can figure out a way to check it with a dial indicator to get it as close to centered as possible.

 

[The_Lobbster]

Just discovered there is a collar on the output shaft that meets the oil pump. Difference is 10 thousandths. Wondering if I can find some 5 thou shims, slide the shaft in, shim it, and be at the mercy of the output bearing to keep me centered.

 

[The_Lobbster]

Shasta shims work wonders. I am forever at the mercy of that output bearing though. Almost thinking I should see if somebody can turn me an aluminum spacer to pop in to help relieve any play that the bearing has. Otherwise I’m just hoping by keeping it vertical that it’s centered well enough.

 

[The_Lobbster]

Well that’s done, and I will never do it again, if this blows, I’m getting an atlas. Had to order 4mm pins for the tone ring locator and cut one down.

Feels like everything turns smooth so hopefully my alignment trick worked! Otherwise this was a quick $1200 down the drain…..

No yokes yet, I ordered two 1310 high clearance units so I can run stock CV shafts and hopefully save some money there vs buying a whole new shafts from Tom Woods.

 

[The_Lobbster]

What’s the easiest way to setup the axle for my CV shaft? Just rotate the housing by eye and tack my perches? Or get a straight edge on it somehow? I’m reading 2° below output is ideal for the CV.

 

[RockChucker]

You do want it a couple degrees low for a couple reasons. First, the axle will wrap up slightly under power but more importantly I would argue is that this will cause the bearings in the ujoint caps to move around and keep things wearing evenly. Perfect 0° means the same few bearings get all the millions of cycles of loading. When I’ve set pinion angle (granted with links), I’ll bolt the shaft in place and eyeball it then drop the axle end of the shaft down and put an angle finder on it. You can do similar with spring perches, just clamp things tight with the u bolts and loosen if you need some adjustment

 

[The_Lobbster]

Shiny things arrived today so I test fit it up. Fits really clean! I was going to try to drop it in the bay, but decided to wait til I can get an actual chain on the engine versus just a cheap 1” strap.

 

[The_Lobbster]

Funny how fast life changes! Listed the comanche project for sale today.

TDI Comanche Project
https://classifieds.ksl.com/listing/69641612

 

[Herzog]

Funny how fast life changes! Listed the comanche project for sale today.

TDI Comanche Project
https://classifieds.ksl.com/listing/69641612

Bummed to see! Hope all is well.

If my shop were done, I'd seriously consider this. GLWS.

 

[The_Lobbster]

Since I can make payments on the medical bills, I need to keep my sanity in the meantime, so I’m going to keep wrenching until it either sells or gets finished.

So I started the flatbed, from 2” tube I scored, $20 per stick! 1/8 wall

I think yet I am going to throw the 3” springs I got under the front, the add a leaf in the rear. Then I’ll have to finish up the flatbed to match whatever height that puts me at.

 

[The_Lobbster]

Put the 3” springs in the front and it’s not sitting so tall now.