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Author Topic: Garrett 21A Differential PAerts  (Read 586 times)

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Offline Breithaupts

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Garrett 21A Differential PAerts
« on: November 19, 2017, 10:00:31 am »
Anyone know where I can find parts for a front differential for a Garrett 21A skidder?  Having trouble finding one.  Mine is tore up.  Thanks gents...and ladies of course!  I'm near Seattle, Washington, but would be glad to ship one in from anywhere.  My mechanic can't find one...yet.  He's a great guy, just having trouble sourcing the diff.

Offline bushmechanic

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Re: Garrett 21A Differential PAerts
« Reply #1 on: November 19, 2017, 10:08:38 am »
A picture of the differential or the planetary would help out. I believe the axles are Rockwell's in that machine. What is the ratio of the diff? It is stamped on the end of the pinion.

Offline MT logger

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Re: Garrett 21A Differential PAerts
« Reply #2 on: November 19, 2017, 10:29:42 am »
I have a straight 21 i am parting out I put an open diff in the front a couple years ago got it out of Chicago cant remember the gear house name. If mine are the same as the 21A send me a message.

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #3 on: November 19, 2017, 10:37:37 am »
I have asked my mechanic what the ratio is on the diff, but it's Sunday morning at 7:30 here so he's kinda slow on the reply...lol  I will get back to you tho!  I need the old girl back as I need to yeard wood!

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #4 on: November 19, 2017, 10:39:28 am »
MT Logger - Do you have diff parts still on the 21 you are parting out?  I think there's a good chance they would be the same.  Real similar machines in many respects.  Curious what parts you do have?

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #5 on: November 19, 2017, 10:47:55 am »
How the heck do I post a picture of the differential on here?  I have one.  I think the photo of the diff should be in my pictures if I'm doing it right?!?

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #6 on: November 19, 2017, 10:53:13 am »
OK the picture of the differential is in my gallery.  Can you see it?

Offline 78NHTFY

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Re: Garrett 21A Differential PAerts
« Reply #7 on: November 19, 2017, 10:55:56 am »
 

 
Thought I'd help out with the photo upload ;) :D.  All the best, Rob.
If you have time, you win….

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #8 on: November 19, 2017, 10:57:45 am »
Thanks, Rob!

Offline Breithaupts

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Re: Garrett 21A Differential Parts
« Reply #9 on: November 19, 2017, 11:00:17 am »
Photo of diff.

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #10 on: November 19, 2017, 11:07:32 am »

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #11 on: November 19, 2017, 11:08:52 am »
Ahhhh...I see how to post pics in the thread now! Sheesh, i'm not the sharpest marble in the bag sometimes...haha

Offline bushmechanic

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Re: Garrett 21A Differential PAerts
« Reply #12 on: November 19, 2017, 11:21:10 am »
Definitely a Rockwell diff, now all you need to know is the ratio. It is stamped on the pinion end where the yoke slides on in the number of teeth on the pinion gear and the number of teeth on the crown gear. Most likely 5/39 which is common in skidder diffs. If so there are a lot of machines you could source that from.

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #13 on: November 19, 2017, 11:25:38 am »
Sent your questions to my mechanic.  He's in Sequim, WA.  otherwise I would drive over and look.  I'm in tacoma, WA

This forum is AWESOME 8)

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #14 on: November 19, 2017, 11:30:34 am »
Bushmechanic - Do you think I should try and source off an old skidder that is parting out, or is there somewhere to buy new/used?  Mechanic tells me Rockwell says they are not in stock any longer.  New one may put me under any way... Forget about a "Used Log Truck".  What about a "Used Log Skidder"?  Buzz Martin must not have owned one, ehe?

Offline bushmechanic

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Re: Garrett 21A Differential PAerts
« Reply #15 on: November 19, 2017, 11:34:15 am »
I'm not sure but I think there is an forum member on here from Tacoma that goes by the name of tantoy. He recently rebuilt a Garrett and an excellent job too! Search the forum its a good read.

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #16 on: November 19, 2017, 11:35:30 am »
I've seen Tantoy on here before.  Will do, thanks!

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #17 on: November 19, 2017, 11:51:02 am »
Rockwell Differential is Ratio is 7.8: 1


Offline bushmechanic

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Re: Garrett 21A Differential PAerts
« Reply #18 on: November 19, 2017, 11:54:29 am »
I have got gear sets from truck applications and installed them before, some bolt up perfect and others I have had too redrill the crown bolt holes too fit. Either way it won't be cheap, the last one I did was an Eaton and the gear set ran about $1200 Canadian, not including bearings or seals. Aftermarket Parts is a good source for forestry parts. It may be easier to get a diff from a parted out machine, anyway good luck with that.

Offline Breithaupts

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Re: Garrett 21A Differential PAerts
« Reply #19 on: November 19, 2017, 11:57:36 am »
Thanks for the info Bushmechanic.  Will pass along your reply to my mechanic and have also reached out to Tantoy so we'll see what we can come up with.  I would pay $1200 in a New York Second...