Post support questions about your JD350 and newer crawler here
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xeagerx
- MC crawler

- Posts: 7
- Joined: Tue Dec 27, 2011 7:38 am
- Location: Wisconsin
Post
by xeagerx » Tue Feb 21, 2012 8:21 am
I have OEM idlers on my 350, they are worn. From reading some of the past messages, sounds like I can rebuild them. Are they cast steel? What kind of rod? Is it nessary to preheat? Do they make aftermarket? Any sources out there? From Wisconsin.
Lots of questions I know..New to 350's and trying to fix what someone else covered with paint.
Thanks
Yes! I do have more time than money,but how much is it really worth?
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andregrondin
- 440 crawler

- Posts: 215
- Joined: Mon Apr 18, 2011 6:51 am
- Location: Granby,Québec, Canada
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by andregrondin » Tue Feb 21, 2012 8:55 am
Hello !
I have the same problem with my idler on my 350 , I've been told that the CASTED idler can't be recharged because they will break due to the fact they are casted , but I've read that the ones form other vendors are steel one and can be recharged .
hope this help.
Dig in boy !!
J-D 350 straight 1966
model # = T4F3D
serial # = 08883T
J-D 690-B 1980
model # = D690B
serial # = 007364T
Mack RB688S 1990 dumper
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Tigerhaze
- 350 crawler

- Posts: 2278
- Joined: Thu Jul 06, 2006 12:13 pm
- Location: West-Central MO
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by Tigerhaze » Tue Feb 21, 2012 9:44 am
xeagerx wrote:I have OEM idlers on my 350, they are worn. From reading some of the past messages, sounds like I can rebuild them. Are they cast steel? What kind of rod? Is it nessary to preheat? Do they make aftermarket? Any sources out there? From Wisconsin.
Here was the most recent discussion on this- especially look at the hyperlinks I provided near the top of the thread for specifics.
http://www.jdcrawlers.com/messageboard/ ... ight=idler
(1) JD Straight 450 crawler dozer with manual outside blade; (2) JD 2010 diesel crawler loaders; (1) JD 2010 diesel dozer with hydraulic 6-way blade; (2) Model 50 backhoe attachments, misc. other construction equipment
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LeonardL
- 350 crawler

- Posts: 916
- Joined: Thu Oct 06, 2011 7:11 pm
- Location: Missouri
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by LeonardL » Tue Feb 21, 2012 9:55 am
I'm glad you posted that Tigerhaze! Sometimes I wonder if people are paying attention to whats already been said.... several times!... and not long ago!!
And on this note... The way I see it, Weld the "Blanking things up" Use some 7018 rod and see what happens. If the Idlers are junk then what is there to loose other than a junk idler! Go for it!!!

40 plus years working on JD 350s, 400Gs, 450s and other equipment both Ag and Construction.
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xeagerx
- MC crawler

- Posts: 7
- Joined: Tue Dec 27, 2011 7:38 am
- Location: Wisconsin
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by xeagerx » Tue Feb 21, 2012 10:57 am
Thanks for your patience. I did read other posts.
I wasn't sure if I should ask specfic questions about a past message with a reply. Or make new post.
Rebuilding undercarriage and idlers are borderline..looking for new but seem hard to find..
thanks again

Yes! I have more time than money,but after the enjoyment of the repair is over, what was my time worth!
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jtrichard
- 350 crawler

- Posts: 1883
- Joined: Sun Jan 11, 2009 9:48 pm
- Location: Joshua Tree CA
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by jtrichard » Tue Feb 21, 2012 11:55 am
back in the day (which was a Tues. i believe ) it was common to weld up all the rollers....... that was before all the after market parts now that the machines are older and not many parts out there it looks like old-school ways are coming back weld them up!!!!!
2010 with 622 dozer with mod. 35 ripper and a 2010 with 622 dozer bought in 1969 and a 2010 loader with drott and mod. 36 ripper
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Tigerhaze
- 350 crawler

- Posts: 2278
- Joined: Thu Jul 06, 2006 12:13 pm
- Location: West-Central MO
Post
by Tigerhaze » Tue Feb 21, 2012 6:06 pm
xeagerx wrote:Thanks for your patience. I did read other posts.
I wasn't sure if I should ask specfic questions about a past message with a reply. Or make new post.
It's really not a problem to make a new post if you can't reply to an old one, but just wanted to let you know that we have discussed previously so there is some good information in the archives.
I know on some boards people get offended if an old post is "resurrected", but I have never seen that on this board and I think it actually makes it easier for others to find relevant information on a topic as we discuss it further

(1) JD Straight 450 crawler dozer with manual outside blade; (2) JD 2010 diesel crawler loaders; (1) JD 2010 diesel dozer with hydraulic 6-way blade; (2) Model 50 backhoe attachments, misc. other construction equipment
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