Removing front drive shaft. Will it still drive? - JeepForum.com
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post #1 of 20 Old 07-05-2019, 10:30 AM Thread Starter
soonerck
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Removing front drive shaft. Will it still drive?

2005 Grand Cherokee Laredo. There is an issue either in the front diff or I may have the torque converter issue. If I remove the front drive shaft, the front diff will still have moving parts but no force to it. I was hoping removing the front shaft might help me pinpoint my problem but I'm not sure if that would work. I'm no 4x4 expert by any means.

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post #2 of 20 Old 07-05-2019, 11:01 AM
consumedbywater
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No, it won't move. The transfer case doesn't lock up, so you'll just end up sending all the power through the disconnected front end.
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post #3 of 20 Old 07-05-2019, 11:21 AM Thread Starter
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That was my worry. I remember locking my J80 to get it to move. Thank you.
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post #4 of 20 Old 07-05-2019, 11:55 AM
TSEJEEPERS
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You can move it in 4wd low.
Enough to move it out of the garage any way. I would not drive it across town.
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post #5 of 20 Old 07-09-2019, 12:43 PM Thread Starter
soonerck
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No biggie, just my Tranny

turns out it's my crappy mercedes built transmission. Torque converter clutch assembly. $5000 to replace. No one will rebuild it. Thanks Jeep/Dahmler/Fiat
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post #6 of 20 Old 07-09-2019, 01:14 PM
222Doc
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thought they were made in the Indiana Transmission, usa.
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post #7 of 20 Old 07-09-2019, 02:13 PM
yzjwk
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Quote:
Originally Posted by soonerck View Post
turns out it's my crappy mercedes built transmission. Torque converter clutch assembly. $5000 to replace. No one will rebuild it. Thanks Jeep/Dahmler/Fiat
$5K ? You can replace the whole transmission for less then that .. I would find a new shop.
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post #8 of 20 Old 07-10-2019, 10:09 AM Thread Starter
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that is the whole transmission. $1000 core charge. Tranny shops won't even order it until you drop off. They are on national backorder so I'm looking at 30 days minimum before they would likely even ship. The 4.7 and 5.7 have USA tranny's. My cheap jeep has the built to fail Mercedes tranny.
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post #9 of 20 Old 07-10-2019, 10:10 AM Thread Starter
soonerck
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thought they were made in the Indiana Transmission, usa.
The 4.7 and 5.7 have USA tranny's. My cheap jeep has the built to fail Mercedes tranny.
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post #10 of 20 Old 07-10-2019, 11:29 AM
underscore
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I might be wrong but isn't the torque converter external to the trans? Either way I'd hardly call a single failure on a 15 year old vehicle "built to fail".
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post #11 of 20 Old 07-10-2019, 12:54 PM
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^^ this .. W5J400 torque converter at RA is $300 . And in many ways I'd rather have a NAG1 then the 545

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post #12 of 20 Old 07-10-2019, 01:46 PM
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Quote:
Originally Posted by yzjwk View Post
^^ this .. W5J400 torque converter at RA is $300 . And in many ways I'd rather have a NAG1 then the 545
X2....in most cases, a lot more flexibility. I have the 545RFE in the Jeep and 2 Hemi LX vehicles with the NAG1. I might be changing the conductor plate in the NAG1 in my 05 Hemi Magnum (limp mode) with only 87K on it. Have to do a little troubleshooting yet though. My 300C SRT8 has 168K on it and works perfectly, and it gets a lot of hard exercise almost daily.

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post #13 of 20 Old 07-10-2019, 02:04 PM
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Yeah, the NAG has a good reputation for durability. Its not well suited to a V6 performance wise, however. Tons of complaints. The V8 version can handle tons of power but the V6 version uses less durable parts than the V8s I think.

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post #14 of 20 Old 07-10-2019, 06:34 PM
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Yeah, the NAG has a good reputation for durability. Its not well suited to a V6 performance wise, however. Tons of complaints. The V8 version can handle tons of power but the V6 version uses less durable parts than the V8s I think.
Are you saying that they are using a different W5A580 (NAG1) in the CRD compared to the V8? I didn't think that was the case.

As far as I know, the 4.7 and 5.7 use US build NAG1, and the CRD uses German built W5A580 - same transmission, different country of origin. A lot of people have stated that the German built one is better, which is understandable considering the Germans designed it in the first place!

The NAG1/W5A580 is used in a lot of powerful cars, and the '580' refers to it being able to cope with 580lb-ft of torque.

http://etereman.com/blog/racing-tran...o-look-out-for

https://en.wikipedia.org/wiki/Merced...c_transmission
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post #15 of 20 Old 07-11-2019, 06:06 AM
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The CRD, SRT8, and the 3.7v6 got the NAG1; the 4.7 and the 5.7 got the 545RFE.
Sometimes I want the gearing in the 545RFE in my CRD, NAG1 is 1:1 in 4th gear, the 545 is 1:1 in 3rd gear; leaving OD in a much better area. Though, it seems like the 545 isn't built to hold the torque and power of the SRT or the CRD... BUT WHY put it in the 3.7v6?
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