NP 241 snap ring kit

[loafer]

Anyone run one of these kits in their 241?

http://www.riversidegear.com/categories/transfer-cases-and-parts/g-m-transfer-cases-and-parts/products/product-621.html

While searching for replacement snap rings I came across this. Is there a problem with the existing snap ring design to warrent this $50.00 kit?




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[rcamacho]

Purportedly NP241 snap rings are notorious for breaking causing collateral damage in transfer case. I hear that these collars are available through other channels for 1/5 the price though...

Here's another type of snap ring improver:
http://drivetrain.com/gillies/Tcasesaver.html

 

[Chaddy]

The upgraded snap rings are worth it if you dont go SYE.

 

[loafer]

So the action of the slip yoke sliding on the output shaft is what causes the snap rings to fail? If this is the case, I would expect this axial load to increase with the addition of an SYE kit (which I'm planning to install), as the friction in the sliding drive shaft joint always seams to be higher than the slip yoke method.

The upgraded snap rings are worth it if you dont go SYE.

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[sled_dog]

you are forgetting that the SYE kit adds another bearing to the shaft for more support, absorbing some load.

What do you mean by "Axial load"? It sounds fancy but tells me nothing, seeing as axial load could be on any axis(any direction). You mean the lateral force(forward and backward?)?

 

[loafer]

The SYE kit replaces the existing bearing with a new one, so still the same # of bearings.

As far as the loads, I should of said thrust loads instead, generated by whatever friction may be present from the drive shaft or slip yoke moving in and out.

I really didn't think these loads would be that high; but then why would there be this beefy looking snap ring kit available?

It sounds like nobody has had any trouble with the stock configuration, so I'm thinking I don't need it.

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[K5Jimmy]

I had the snap ring break, which allowed the shaft to walk. When I pulled the TC, I found a damaged chain and a damaged range fork. Rebuilt it with the seal/bearing kit, chain, and range for from www.nationaldrivetrain.com for about $240 total, and bought the Gilly TC saver. I have no plans for the $400 sye as I don't need it for my application, but I feel more confident since I know first hand the damage possible from something as simple as a snap ring.

I learned that this is a common problem with a 241. Seems about the same time I did this there were a number of threads from people with a similar problem. I also learned that an over whelming number of people gave me bad advise about TC rebuilds. Most shops made it sound like they were filled with mousetraps and ping pong balls and quoted $500-$600 if I pulled it myself.

Some advise from this very site was to just get one from a junkyard...which seemed to me to be like potentially buying the same problem. What about a 205 swap? Seems it may be similar in price to a SYE.

 

[loafer]

Thanks for the post, I wasn't able to find any threads about this problem. If I don't install an SYE I'll make sure to install the t-case saver. That Gilly TC saver just looks like a 2-piece shaft collar. Is that all it is?

I bought the 241 to replace my 208 with the idea that it would give me the option to run a SYE kt. I've torn the 241 appart to inspect it and everyhing looks good. I decided to go with the 241 over the 205 for the lower gearing.

I had the snap ring break, which allowed the shaft to walk. When I pulled the TC, I found a damaged chain and a damaged range fork. Rebuilt it with the seal/bearing kit, chain, and range for from www.nationaldrivetrain.com for about $240 total, and bought the Gilly TC saver. I have no plans for the $400 sye as I don't need it for my application, but I feel more confident since I know first hand the damage possible from something as simple as a snap ring.

I learned that this is a common problem with a 241. Seems about the same time I did this there were a number of threads from people with a similar problem. I also learned that an over whelming number of people gave me bad advise about TC rebuilds. Most shops made it sound like they were filled with mousetraps and ping pong balls and quoted $500-$600 if I pulled it myself.

Some advise from this very site was to just get one from a junkyard...which seemed to me to be like potentially buying the same problem. What about a 205 swap? Seems it may be similar in price to a SYE.

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