rebuilding 350B final and reusing pressure plate

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stew1944
40C crawler
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rebuilding 350B final and reusing pressure plate

Post by stew1944 » Mon Jun 18, 2018 9:58 am

I'm in the process of rebuilding a final on my 350B and plan on using the old pressure plate. My question is with the new clutch packs do I need to worry about redoing the adjustment on the pressure plate? I'm replacing the throw out bearing while it is apart too.

Thanks,
Ernie
350B dozer
KX71 excavator
T300 skid steer
730 John Deere
656 International
Farmall Cub

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stew1944
40C crawler
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Location: northeastern Pa.

Re: rebuilding 350B final and reusing pressure plate

Post by stew1944 » Tue Jun 19, 2018 5:41 am

Am I asking a dumb question, or has no one tried to reuse their old pressure plate? I hate to spend the money on a new plate when my old one seems in good shape, but I really don't want to pull the final again at my age (73). Lol

Ernie
350B dozer
KX71 excavator
T300 skid steer
730 John Deere
656 International
Farmall Cub

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Stan Disbrow
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Re: rebuilding 350B final and reusing pressure plate

Post by Stan Disbrow » Tue Jun 19, 2018 5:53 am

Hi,

Well, Dad reused the original pressure plates on his 420c back in 1966 and again in 1989. He also reused the steel plates. Of course all parts were checked and measured first. Now, that 420c hasn't seen the use it did between 1958 and 1966 nor what it did between 1966 and 1989. But, as the pink bunny says: Still Going.

If there is doubt regarding the reusability of parts, or doubts about checking them, then just change them out. As noted one doesn't really want to go back in because it turns out something is not up to snuff.

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)

B Town
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Re: rebuilding 350B final and reusing pressure plate

Post by B Town » Tue Jun 19, 2018 7:08 am

Good morning,

First off, I am not terrible familiar with the 350's. I thought there was a special tool to set the height of the pressure plate contacts for the throw-out bearing. I think this would be a very important step, since you are changing the height of the clutch pack with new clutches.

Bruce

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Lavoy
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Re: rebuilding 350B final and reusing pressure plate

Post by Lavoy » Tue Jun 19, 2018 7:28 am

So the question/s are:
What do you mean it looks OK? Visual test tells nothing about spring pressure, which is the critical factor assuming nothing is damaged or broken.
Is it really worth saving $140 and running the risk of not having to pull the final again.
What is your time worth if you have to pull the final again?
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

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stew1944
40C crawler
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Posts: 13
Joined: Sun Apr 29, 2018 5:44 pm
Location: northeastern Pa.

Re: rebuilding 350B final and reusing pressure plate

Post by stew1944 » Tue Jun 19, 2018 8:43 am

Yes, you're right, Lavoy. I've decided not to chance it and will be ordering a new pressure plate.

Thanks everyone for your replies,
Ernie
350B dozer
KX71 excavator
T300 skid steer
730 John Deere
656 International
Farmall Cub

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Stan Disbrow
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Joined: Fri Jul 15, 2005 3:13 pm
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Re: rebuilding 350B final and reusing pressure plate

Post by Stan Disbrow » Tue Jun 19, 2018 11:13 am

Hi,

Yes, spring pressure would have to be measured. If you don't have a way to do that, then just get new ones. At which point, you need the gauge to set the finger height.

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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