420c steering clutch issue

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jeremyhayes
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420c steering clutch issue

Post by jeremyhayes » Tue Oct 03, 2017 10:23 am

My grandpa has a 420c crawler that just had both steering clutches rebuilt a few years ago but now any time you pull the left steer lever it pops twice looking through the inspection cover over the left steer clutch you can see the release bearing pop a little crooked each time it pops, looks like it's over running an angled tooth. I'm wondering if this sounds like an adjustment issue or if a part failed? I've compared both sides and the only difference I see is the release bearing is chewed up on the edge closest to the pressure plat like its hitting something when it pops.

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Lavoy
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Re: 420c steering clutch issue

Post by Lavoy » Tue Oct 03, 2017 12:13 pm

Grossly out of adjustment. Go through the full adjustment procedure and it should be cured.
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jeremyhayes
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Re: 420c steering clutch issue

Post by jeremyhayes » Tue Oct 03, 2017 1:15 pm

Do I need to get into the housing for any of the needed adjustments? I tried adjust the adjustment bolt right under the cover and also moved the throw out bearing adjustment to see if it changed but didn't seem to help much

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Stan Disbrow
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Re: 420c steering clutch issue

Post by Stan Disbrow » Tue Oct 03, 2017 2:06 pm

Hi,

They are done via the two holes. But, you have to follow the instructions in the service manual *exactly*. Otherwise, you will get nowhere. Fast.

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)

jeremyhayes
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Re: 420c steering clutch issue

Post by jeremyhayes » Tue Oct 03, 2017 3:59 pm

Thank you, I was dreading having to pull it apart

Steven Walters
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Re: 420c steering clutch issue

Post by Steven Walters » Tue Oct 03, 2017 5:42 pm

Its actually pretty easy, make sure you have correct tool to set pressure plate. And good tech Manuel.

jeremyhayes
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Re: 420c steering clutch issue

Post by jeremyhayes » Tue Oct 03, 2017 7:49 pm

It doesn't look to hard, but it's the unknowns that make me nervous. I'm a big rig mechanic so the tools aren't the issue it's just not knowing the hidden problems that concern me

original possum
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Re: 420c steering clutch issue

Post by original possum » Tue Oct 03, 2017 8:18 pm

Unless you can see the sleeve that the throwout bearing moving when you pull the clutch then don't take it apart. Do the top adjustments first. And don't drop any tools in.
Early 40C w/Yakima toolbar and homebuilt ripper: 350 w/6-way

jeremyhayes
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Re: 420c steering clutch issue

Post by jeremyhayes » Tue Oct 03, 2017 9:43 pm

Perfect I'll start there and hope I can get it right :mrgreen: thanks to all for the advice and guidance

jeremyhayes
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Re: 420c steering clutch issue

Post by jeremyhayes » Sun Oct 15, 2017 10:35 pm

Just too follow up, the brake bands were way out which seemed to be the biggest contributor to the problem but ran it all afternoon and it did great thanks again for the help

WELDER_1
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Re: 420c steering clutch issue

Post by WELDER_1 » Fri Apr 20, 2018 3:05 pm

are these steering clutches close to the same as the ones in a 450c with dry steering clutches.....if so do you have to take steering clutch housing of to remove clutch assembly ?

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Stan Disbrow
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Re: 420c steering clutch issue

Post by Stan Disbrow » Fri Apr 20, 2018 4:44 pm

Hi,

Yes, you do have to drop the track and remove the sprocket to then remove the entire final drive. The clutch pack is inside that along with the brake.

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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