350 B brake band

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timmtnman
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350 B brake band

Post by timmtnman » Fri May 11, 2018 5:45 pm

Getting ready to start tearing it apart to replace broke brake band. Does anyone have a video or any tips on how to make this easy. First time doing this and any help would be appreciated. Thanks

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Stan Disbrow
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Re: 350 B brake band

Post by Stan Disbrow » Fri May 11, 2018 6:01 pm

Hi,

Hardest parts are (a) finding and driving out the master pin and (b) holding up the weight of the final drive while rotating it at the same time. It is worthwhile making up the hoop they show in the manual.

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

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Lavoy
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Re: 350 B brake band

Post by Lavoy » Sat May 12, 2018 11:20 am

Service manual procedure is about the best description, read through it a few times to familiarize yourself with it, but keep the manual handy while disassembling.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

timmtnman
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Re: 350 B brake band

Post by timmtnman » Sat May 12, 2018 5:45 pm

Thanks, been reading the book and studying the dozer too. Will the final have to come all the way out just to replace band or can I slide it out far enough just to replace the band.

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Lavoy
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Re: 350 B brake band

Post by Lavoy » Sun May 13, 2018 2:34 pm

Either way you will need to support the final. Best bet is to just remove it. You should be looking at clutches and pinion seal as long as the final is off.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

timmtnman
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Re: 350 B brake band

Post by timmtnman » Thu May 17, 2018 5:32 pm

Got it torn down today and I think it looks pretty good in my opinion except for brake band being broke. Would post pics to get the experts opinions but can't figure out how to post them.

timmtnman
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Re: 350 B brake band

Post by timmtnman » Fri May 18, 2018 5:06 pm

After inspecting everything I noticed 1 of the return clips was on and one had fell off and one is missing. Deere doesn't have them available anymore. How important are these and does anyone have some extra ones available.

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Lavoy
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Re: 350 B brake band

Post by Lavoy » Fri May 18, 2018 9:12 pm

They aren't, throw them away.
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Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

timmtnman
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Re: 350 B brake band

Post by timmtnman » Sat May 19, 2018 4:34 am

Thanks Lavoy,

timmtnman
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Re: 350 B brake band

Post by timmtnman » Sat May 26, 2018 10:02 am

I got the band on and started around the drum but I can't get it to go in. It is about 2 inches away. Is there a trick to get it in or am I doing something wrong.

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jsal
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Re: 350 B brake band

Post by jsal » Sat May 26, 2018 3:35 pm

when I install the final I use guide studs to keep everything straight you might to have to help the band over the drum with a bar


JIM

timmtnman
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Re: 350 B brake band

Post by timmtnman » Sun May 27, 2018 4:42 am

Thanks Jim, I have it on two long rods in th smaller holes and two longer bolts in the top and band is started on drum. Everything looks good but it likes about 2 and half inches to go in. Is it the shaft hitting or not aligned properly. The shaft is still attached to the dozer side. Have tried a few different things and it will nor slide in.

dtoots1
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Re: 350 B brake band

Post by dtoots1 » Sun May 27, 2018 5:01 am

mostly, i found that the brake lining grabs the brake drum and kinks inside the housing...just have to keep brake band on straight and working inward and keep weight supported. i actually used a large rubber mallet on mine and bumped it in a bit and literally turned my bolts in with fingers after each bump and making sure brake band straight...it too moves....also loosen brake band as much as possible for clearance

timmtnman
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Re: 350 B brake band

Post by timmtnman » Sun May 27, 2018 7:52 am

Thanks, I will give that a try.

timmtnman
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Re: 350 B brake band

Post by timmtnman » Tue May 29, 2018 3:31 pm

Finally got it back together and adjusted everything. The right side which is the brake band I replaced, has a vibration when I pull the lever back. It had a vibration right before the band broke also. It steers like it is supposed too now. I left the covers off while testing and the ball joints are pretty sloppy on that side. Would that cause a faulty adjustment and not let things work properly causing a vibration. Or is there something else causing the vibration. The harder you pull the worst it gets also.

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