450c track master pin

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mbavers
MC crawler
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450c track master pin

Post by mbavers » Sun Sep 15, 2019 3:26 pm

A friend with a 1978 450c removed and replaced the track master pin and insists the was no retaining device (snap ring, etc.) to hold the pin--he just drove it out and drove it in. I can't imagine there being no retaining device. Is this possible?

Jim B
2010 crawler
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Re: 450c track master pin

Post by Jim B » Sun Sep 15, 2019 4:12 pm

The interference fit between the pin and pin holes in the rails hold it.

fundytides
440 crawler
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Re: 450c track master pin

Post by fundytides » Sun Sep 15, 2019 4:48 pm

I have the same thing in the replacement track on my 40c. No problem.
have 40c 4 roller crawler, 1927 Ford T Touring car, 1931 Ford A Roadster, 1951 Standard Vanguard Saloon. Never a dull moment!

Jason37756
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Re: 450c track master pin

Post by Jason37756 » Wed Sep 18, 2019 8:47 am

Pretty common not to have a retainer...most folks tack weld the pin in place to ensure it stays put.

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psprague
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Re: 450c track master pin

Post by psprague » Fri Oct 04, 2019 12:23 pm

They are an 'interference' fit.

I've removed mine once. I see no danger of it ever coming out on its own.
JD 450c forestry, JD 440A cable skidder

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Lavoy
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Re: 450c track master pin

Post by Lavoy » Fri Oct 04, 2019 2:19 pm

There is nothing holding any of the other pins and bushings in, drive master is no different.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

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