TeraLow NP231 4:1 Disassembly and Repair - Page 2 - JeepForum.com
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post #16 of 24 Old 09-30-2020, 06:41 PM
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I'm getting buried in medical bills right now...
Vote!


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post #17 of 24 Old 09-30-2020, 07:21 PM Thread Starter
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Absolutely. The last thing I need right now is MORE Obamacare. That's what got me into this mess.

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post #18 of 24 Old 10-01-2020, 07:01 AM
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Absolutely. The last thing I need right now is MORE Obamacare. That's what got me into this mess.
You realize that can't happen, right, since Obama isn't president any more? You've been waiting near 4 years for Trumpcare, and are still waiting.

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post #19 of 24 Old 10-01-2020, 04:54 PM Thread Starter
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...Trumpcare...
The very thought makes me nauseous.

No, I've been waiting 5-6 years for Congress to finally repeal the unAffordable Healthcare Act, and they still won't do it. At least the individual mandate is gone, but now that there is no competition, my only options are terrible and expensive.
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post #20 of 24 Old 10-02-2020, 06:08 AM
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Quote:
Originally Posted by JeeperDon View Post
...Trumpcare...
The very thought makes me nauseous.

No, I've been waiting 5-6 years for Congress to finally repeal the unAffordable Healthcare Act, and they still won't do it. At least the individual mandate is gone, but now that there is no competition, my only options are terrible and expensive.
I haven’t had health insurance in years.

I can’t afford it. Even now, through my employer, it would be nearly 80% of one week’s take home per month with deductible scenarios that essentially mean an out-of-pocket of $6000 annually before insurance kicks in, and then there’s caps.

That makes having health insurance for me nearly as costly as average rents at a calculated almost $12,000 “cost” per year. And I’m a single male in his fifties.

So I don’t have health insurance because affordable health care turned into a free gift of $6000/year by me to an insurance company.

The health care scheme is a racket. Basically extortion. Something needs to done but obomberkare wasn’t it. I’m not anything likened to a socialist but the health care racket is an insurance company money grab. Doctors pay 50% liability, and ins-co’s make a profit, and we pay our insurance, and ins-co’s make a profit, and we pay our deductible, and that goes to the doctor’s office or hospital, and they make a legally allotted ‘overhead’ even when ‘non profit.’ Then we have a heart attack or get cancer and we exceed our caps and we wind up owing $25K to the hospital (Negotiated $18K when my dad had a heart attack).

When people overspend at Nordstrom, Home Depot, or the car dealership, or buy a house above their income bracket they’ve made a choice even if a bad one.

Healthcare fleecing: there really isn’t much of a choice, is there? American health care leans towards ‘social,’ claims to be capitalist, and yet operates without the market pressure of capitalism other than the bloated neo-competition of Medicaid/Medicare which is in itself part of the problem because it falsifies ‘value’ in the market by propping it with a poorly limited funding source- taxpayers- and leveraged finagling by Congress

Exactly how is it that health
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[size=3]Shackles & D-rings are different things.
Cranking IS turning over
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post #21 of 24 Old 10-02-2020, 05:00 PM Thread Starter
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Well, we're way off topic, but Fish, wanna know what's really crazy? The hospital has been giving me an 85% cash discount just because I've been paying up-front and with cash. That's how much of that bill gets wasted on insurance and 'overhead.'

Wife's MRI was $5,700, but because I was willing to pay cash up front they dropped it to $780.

Anyway, back on topic. I haven't had a reply to my email to Luke yet. Still waiting on what he'll charge me for a new planetary set.

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post #22 of 24 Old 10-03-2020, 12:51 PM
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85% cash discount Wife's MRI was $5,700, but because I was willing to pay cash up front they dropped it to $780.
I wasn’t really looking for a proof to my point but there it is!

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post #23 of 24 Old 10-15-2020, 11:09 AM
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HELLO EVERYONE!

New to the group here but wanted to chime in on this situation since I am in the exact same boat! Fear not, I bet your gear is fine! What you see mangled there is actually the outer race of the needle bearing! use a little pick and you can pop that off on the gear then press in a new bearing!

About a year ago I picked up a yj from a good friend of mine, he hadn't taken it wheeling in a couple years so decided to let it go. 4.0l with AX15 teralow, 8 lug D44 front D60 rear, 36" irocks, pretty sweet rig. Was having a lot of fun with it.

He warned me about the RPMs on the teralow and so I was being very religious about trying to not over rev but I had the same bearing failure as seen here, mine went out in July. I only lost one bearing in one planetary but caught it very early. I took apart the tcase and put together a stockish one to go back in the jeep for now. But since it's on 36 and only a 4:10 axle ratio she needs some help getting back to a better crawl ratio and I want to try and fix the teralow. I saw the same thing you did with not being able to push a mill through the weld, but believe it or not, I smacked the center of the weld with a center punch and cracked the weld and pushed the pin right out, no problem! Mine did dig into the plates on the planetary a little bit too so I filled in the gouge with weld then smoothed it back out with the mill to take care of that part. The bearings in there are available from Grainger, about $5 each and can buy new shafting also for about $7 a foot. The most expensive parts are actually the little bronze bushings. I am planning to replace all the bearings, bushings, and one boogered shaft in my planetary. Will probably cost about $100-$150 in parts to do.

Now all that stuff being said. I am wondering if we would be better off to run a gear oil in this as opposed to ATF. ATF has very poor lubrication qualities in this situation. Also I was curious, do you have info about how they were drilling the planetaries? I was thinking of doing the same thing but couldn't figure out how I was going to do that or if it would benefit at all because of the way those bearings are. I have no issue throwing a little money a this to try it but it has to be within reason. If this doesn't work out, I'm just going to get an atlas and not worry about it anymore.

I do do a little street driving with this too so I was wondering if that is where it actually wore out the bearing because of running it around at 60mph? That's what my buddy I got it from was thinking because it sees higher RPMs there.
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post #24 of 24 Old 10-15-2020, 05:45 PM Thread Starter
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No, I measured the ID of the gear and it's been wallowed out by about 1/8". It's definitely destroyed.

I've been communicating with Luke, who used the Terralow planetary set when he designed the Klune underdrive unit. He's very familiar with the design.

I did ask him about using a different lube, but he hasn't gotten back to me on that yet. I do agree that ATF shouldn't be used for an application with such a high shear load. He did say that he doesn't think the unit has any serious design flaws as far as lubrication goes, because they worked great in the Klune and they never had any issues with them. He said he had one customer that did crossdrill the shafts to allow more lube to get into the bearings, but Luke thinks it was unnecessary.

Do the bearings in the planetary gear butt up against each other or is there a gap in between them? If there's a gap, I think the best way to add lubrication capacity would be to drill the planetary itself, in between the bearings.

Luke says that in 2WD (street use), even though the planetaries are turning, they are not under load and so the bearings should not be stressed. The planetaries are only loaded when in low range. That's where RPM issues may happen.

I believe that the issue is twofold: the oil pump can't pump enough oil in low range with a 4:1 reduction to keep the planetary bearings happy, and ATF is a terrible gear and bearing lubricant. It's hydraulic fluid, not oil. The viscosity is simply too low. Revving at high RPMs in a high gear in low range simply exacerbates those two issues.

Luke does have new-old-stock planetary sets and he is willing to sell me one for a very reasonable price. I'm going to purchase one from him when my funds allow it. Probably March/April of next year.

EDIT: please post part numbers of the parts you are using for repairs for future internet posterity.

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