420c steering clutch issue
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- MC crawler
- Posts: 6
- Joined: Mon Oct 02, 2017 10:09 pm
420c steering clutch issue
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.
Re: 420c steering clutch issue
Grossly out of adjustment. Go through the full adjustment procedure and it should be cured.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
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- MC crawler
- Posts: 6
- Joined: Mon Oct 02, 2017 10:09 pm
Re: 420c steering clutch issue
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
- Stan Disbrow
- 350 crawler
- Posts: 2899
- Joined: Fri Jul 15, 2005 3:13 pm
- Location: Raleigh, NC
Re: 420c steering clutch issue
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
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!
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
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- MC crawler
- Posts: 6
- Joined: Mon Oct 02, 2017 10:09 pm
Re: 420c steering clutch issue
Thank you, I was dreading having to pull it apart
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- 440 crawler
- Posts: 115
- Joined: Sun Jul 22, 2007 5:27 am
- Location: Hopewell NJ
Re: 420c steering clutch issue
Its actually pretty easy, make sure you have correct tool to set pressure plate. And good tech Manuel.
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- MC crawler
- Posts: 6
- Joined: Mon Oct 02, 2017 10:09 pm
Re: 420c steering clutch issue
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
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- 1010 crawler
- Posts: 258
- Joined: Wed Sep 11, 2013 3:34 pm
- Location: Shiner, texas
Re: 420c steering clutch issue
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
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- MC crawler
- Posts: 6
- Joined: Mon Oct 02, 2017 10:09 pm
Re: 420c steering clutch issue
Perfect I'll start there and hope I can get it right thanks to all for the advice and guidance
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- MC crawler
- Posts: 6
- Joined: Mon Oct 02, 2017 10:09 pm
Re: 420c steering clutch issue
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
Re: 420c steering clutch issue
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 ?
- Stan Disbrow
- 350 crawler
- Posts: 2899
- Joined: Fri Jul 15, 2005 3:13 pm
- Location: Raleigh, NC
Re: 420c steering clutch issue
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
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!
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
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