Transfer case removal install help.

[Bigunit]

Anyone have a link to the metal shift fork?

http://www.amazon.com/Dorman-600-604-Transfer-Case-Shift/dp/B0083H5C00

 

[derian06]

http://www.amazon.com/Dorman-600-604-Transfer-Case-Shift/dp/B0083H5C00

Thank you, Went ahead and bought it just in case the tcase I ordered has the plastic one in it.

 

[lsv_palana]

Hello,dear friends. I have some strange issue with my hummer h3. While i swithch fron N to D some sounds come from transfer case. Again to N then to D sounds come again.. it look like t-case ready to go on 1 speed but it turn on with sound. I think this is chain ? 50k kilometers... strange.. is our t-case peace of junk ? I have 5.3 2008.

Main spare part for my Hummer while off-roading - sattelite phone !

 

[alrock]

Diff crossmember bushing is the most likely culprit. Take a look at the crossmember that supports the front differential. There's a bushing with a bolt through it - it should not move but it breaks easily .

 

[rascole]

Got the transfer case pulled and ready for a rebuild on Monday. A lot easier to pull than I thought. I pulled the cross member and made it a whole lot easier. Fluid has metal particles so it was ready to go.

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[rascole]

There are no less than six part numbers for H3 transfer cases (BW 3393/3394). They're all nearly identical, and they all use the same design. Alpha's have a slightly different case due to the exhaust system routing. However this difference is so minor, that its almost comical. Any H3 transfer case will exchange properly to any H3. It doesn't matter what year (06-10). It doesn't matter what motor (3.5, 3.7, or 5.3). It doesn't matter what tranny (auto or stick). An H3 t-case is an H3 t-case. The only thing you need to be aware of is the ratio (option NR4 or NR6). So Derian...grab any ole 4:1 case and throw it in. It will fit.

If you are shopping via GM...the latest, greatest version of the 4:1 case is GM #24247592. This is a 4:1, ADV. PAK, BW-3394 with the raised fill plug. I'm fairly certain this also has the chain snubber inside it. It comes with the encoder motor and pre-filled with the correct GM "mystery" fluid (oh god...now we can start a new thread on that again!) for around $1600. If you are shopping outside of GM...search using the official Borg Warner model number BW-3394, as it will yield better search results than the GM part number. What I don't know for sure is: whether or not GM #24247592 has a metal shift fork. This is a service replacement assembly, and it might already have a Dorman fork inside it. I did not take mine apart to check.

All evidence I can find says...GM never made or installed metal shift forks in any year H3 t-case. I've installed metal shift forks in several 4494's and they were all made by Dorman (#600-560). If you got a GM t-case that has a metal fork...its a safe bet that it was outsourced to Dorman and installed at the factory, or it was the Dorman part installed during a repair. I have cracked open several known 08-up virgin cases, and ALL of them had plastic forks, so the whole "08-up came with metal forks" story is probably b.s. When shopping for forks...neither Dorman nor GM clearly label their fork material, and its sometime hard to determine if a part is plastic or metallic. I'll save you the trouble. All Dorman forks are aluminum. All GM forks are plastic. That has been my experience.

Are the older cases able to have the snubber installed/upgraded?

 

[4speedfunk]

No.

 

[rascole]

What concerns are there for slightly overfilling the TC with oil? Calls for 1.6 quarts but would a few extra oz hurt?

 

[4speedfunk]

No.

 

[rascole]

Installed the transfer case today and rebuilt rear drive shaft. Bought a transmission jack from Harbor Freight that has tilt knobs for side to side and front to back. Made installation a snap. Installed new breather hose too and had it cut a foot longer and tied it to the tranny dipstick. Made filling the TC a breeze with a large turkey baster. Now my drive train is all rebuilt now.

Sent from me and my H3

 

[RamRod]

Got the transfer case pulled and ready for a rebuild on Monday. A lot easier to pull than I thought. I pulled the cross member and made it a whole lot easier. Fluid has metal particles so it was ready to go.

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Where did you order your rebuild parts from?

I am thinking I will do a rebuild with my next Xcase oil change


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[rascole]

My shop guy ordered them, I don't where. He found the problem though. It was a bad bushing, lots of scoring and metal gone and was close to eating the case. He ordered a complete rebuild kit so I have a spare fork and chain now.

 

[barijan]

My shop guy ordered them, I don't where. He found the problem though. It was a bad bushing, lots of scoring and metal gone and was close to eating the case. He ordered a complete rebuild kit so I have a spare fork and chain now.

Hi rascole.
Do you still have that spare transfer case chain? Would you like to sell it to a brazilian pal?
I have a Mercedes ML that uses that exactly same Borg-Warner TC chain as the H3.
As I live in Brazil, here is quite difficult to find such part. I could import it, but adding all the customs taxes and shipping it become quite expensive, and as my ML is already a 18 years old vehicle, is complicated to invest so much money on it.
But if you could sell it for a nice price and send it by USPS, may be a hope for my old ML.
Thanks and regards.
Barijan.

 

[rascole]

Hi rascole.
Do you still have that spare transfer case chain? Would you like to sell it to a brazilian pal?
I have a Mercedes ML that uses that exactly same Borg-Warner TC chain as the H3.
As I live in Brazil, here is quite difficult to find such part. I could import it, but adding all the customs taxes and shipping it become quite expensive, and as my ML is already a 18 years old vehicle, is complicated to invest so much money on it.
But if you could sell it for a nice price and send it by USPS, may be a hope for my old ML.
Thanks and regards.
Barijan.

Sorry, chain is gone.

 

[barijan]

Sorry, chain is gone.

No problem.
Thanks anyway!