Lost power to one side of my 350

Post support questions about your JD350 and newer crawler here
jwmurr2000
40C crawler
40C crawler
Posts: 10
Joined: Sun Oct 28, 2018 7:11 pm
Location: West Virginia

Lost power to one side of my 350

Post by jwmurr2000 » Sun Oct 28, 2018 8:14 pm

Hello all. I currently have a 65 jd 350. I was pushing with it the other day and lost power to the left side. Figured the clutches went out so replaced them plus pressure plate. I still have no power to that side. Seemed like I had it briefly but then nothing. Am I missing something? I adjusted the fingers on the pressure plate as well with the jd gauge. I'm needing my machine so if anyone has any ideas please throw them out there.

original possum
1010 crawler
1010 crawler
Posts: 258
Joined: Wed Sep 11, 2013 3:34 pm
Location: Shiner, texas

Re: Lost power to one side of my 350

Post by original possum » Mon Oct 29, 2018 9:10 am

Assuming you adjusted the clutch "by the book" then you are about to pull the final again. First remove the access cover above the clutch (where you made the clutch and brake adjustments after installation). See if anything moves when in gear, forward or reverse, with the other steering clutch handle tied back or at least pulled. If it does then the problem is outboard (like maybe stripped splines between axle and bull gear). If nothing moves then the problem is inboard. Then pull the final and repair the problem. If you pull the bull gear cover and have someone watch the gear under the same test conditions you will know for sure whether you have an axle problem. Clutches rarely fail suddenly. They usually slip a while first.
Early 40C w/Yakima toolbar and homebuilt ripper: 350 w/6-way

jwmurr2000
40C crawler
40C crawler
Posts: 10
Joined: Sun Oct 28, 2018 7:11 pm
Location: West Virginia

Re: Lost power to one side of my 350

Post by jwmurr2000 » Mon Oct 29, 2018 10:00 am

Thanks for the reply. I never got the track back on it yet so won't be too bad to get to. I was kinda thinking it might be in the final but was hoping not. Will check it out maybe tonight.

jwmurr2000
40C crawler
40C crawler
Posts: 10
Joined: Sun Oct 28, 2018 7:11 pm
Location: West Virginia

Re: Lost power to one side of my 350

Post by jwmurr2000 » Mon Oct 29, 2018 3:48 pm

Well checked everything out and the brake drum wasn't turning with that side off the ground the other side tied off. Band was loosened up and steering lever completely unhooked. Tore it all apart and double checked it all and all looked good. Put it back together and fired the dozer up and tried it without the sprocket. It turned for a minute then nothing. I can see the pressure plate wanting to turn but is slipping. Could the brake drum be wore to the point it won't let the clutches grip? The outside where the brake band runs is wore pretty bad.

original possum
1010 crawler
1010 crawler
Posts: 258
Joined: Wed Sep 11, 2013 3:34 pm
Location: Shiner, texas

Re: Lost power to one side of my 350

Post by original possum » Mon Oct 29, 2018 7:39 pm

Parts book shows eight fiber and seven steel plates. It assumes you will be using good parts, like you get from Lavoy. If you got the internet junk all bets are off. I cannot imagine the clutch side of the drum getting that worn, especially in a hurry. If the shaft is turning but the drum is not it is most likely adjustment, lack of thickness of plates, or six broken springs in pressure plate (there are two springs in each position, one inside the other). Make sure the shaft is really turning. Can you turn the sprocket hub with a bar and two bolts? If you can then you can more safely see if the shaft is turning that way.
Early 40C w/Yakima toolbar and homebuilt ripper: 350 w/6-way

jwmurr2000
40C crawler
40C crawler
Posts: 10
Joined: Sun Oct 28, 2018 7:11 pm
Location: West Virginia

Re: Lost power to one side of my 350

Post by jwmurr2000 » Tue Oct 30, 2018 3:42 am

When I first put it together I have to use a bar to turn it but then it's like it lets loose and I can turn it by hand. The pressure plate is new and triple checked. I can see the drum trying to turn but won't. I think I'm going to check the thickness of my new clutch disc.

jwmurr2000
40C crawler
40C crawler
Posts: 10
Joined: Sun Oct 28, 2018 7:11 pm
Location: West Virginia

Re: Lost power to one side of my 350

Post by jwmurr2000 » Fri Nov 02, 2018 7:50 pm

Well I figured out I need the hub the ring gear mounts to. How big of deal is that to take out. I assume I have to pull both sides apart then the rear end.

User avatar
Stan Disbrow
350 crawler
350 crawler
Posts: 2894
Joined: Fri Jul 15, 2005 3:13 pm
Location: Raleigh, NC

Re: Lost power to one side of my 350

Post by Stan Disbrow » Sat Nov 03, 2018 12:23 pm

Hi,

You mean the Spool which sits where the differential would be on a wheel tractor? Yeah. That is a drop both finals and remove the side boxes and seat kind of operation.

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)

original possum
1010 crawler
1010 crawler
Posts: 258
Joined: Wed Sep 11, 2013 3:34 pm
Location: Shiner, texas

Re: Lost power to one side of my 350

Post by original possum » Sun Nov 04, 2018 2:22 pm

I have never seen a hub strip out alone. Usually the shaft is broken or the splines toast on both shaft ad hub. You need to pull the right side to get the hub and ring gear out, as I recall. You can check the hub splines easily before puling the right side since the left track is still broken.
Early 40C w/Yakima toolbar and homebuilt ripper: 350 w/6-way

jwmurr2000
40C crawler
40C crawler
Posts: 10
Joined: Sun Oct 28, 2018 7:11 pm
Location: West Virginia

Re: Lost power to one side of my 350

Post by jwmurr2000 » Mon Nov 05, 2018 4:55 am

Yeah I missed the spines the first couple times I pulled the left side apart :? When the issue continued I new it had to be something else. The spines to the outside of the hub are good so really had to look in there to see. The shaft is fine surprisingly. Anyone know where I might find a hub? Can't find just the hub online or a ring gear with hub.

Jim B
350 crawler
350 crawler
Posts: 2080
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: Lost power to one side of my 350

Post by Jim B » Mon Nov 05, 2018 5:37 pm

My experience with ring and pinion gears has been in heavy trucks and a loader or two. Those were sold, and we replaced them, as matching sets. Never had to do a crawler, but the parts are the same. In the parts catalog it looks like as a set, was the way JD sold them as well. Mating fits of the gears, causing accelerated wear, and noise were concerns with mismatched sets. You can likely get away with using a different ring gear against your pinion, I don't think it would be ideal by any means, but I expect it would work. It has been done before. Someone here likely will have some insight on that.

That said, do you see any numbers on your hub? The 350 parts catalog references hub marked T11388. The parts catalog shows this same hub in some 440ICs and 350Bs, it might have been used in others as well. The same 37 tooth ring gear part number (T11365) shows up in those machines as well. The pinion numbers are different. It does look like the rivets to attach the ring gear to the hub, are still available from JD. Just passing it on as using the part number(s) you are looking for might open up other sources to look at, rather than just saying a 350. I looked at the MY Nortrax site and they show an aftermarket kit with a part number of AT18442U which might be for a 350 as the catalog shows AT18442 as the part number. No info to confirm my thought that this is the right kit nor a price.

Have you sent Lavoy an email (postmaster@jdcrawlers.com)? He may have an idea on used or a source for an aftermarket hub. Hope this helps, good luck.

jwmurr2000
40C crawler
40C crawler
Posts: 10
Joined: Sun Oct 28, 2018 7:11 pm
Location: West Virginia

Re: Lost power to one side of my 350

Post by jwmurr2000 » Mon Nov 05, 2018 8:39 pm

Yeah lavoy didn't have anything. I can use my ring gear with the hub that is with the ring gear I found. I think I would bolt it instead of rivets though.

Jim B
350 crawler
350 crawler
Posts: 2080
Joined: Sun Nov 05, 2017 11:36 am
Location: western Maine

Re: Lost power to one side of my 350

Post by Jim B » Mon Nov 05, 2018 9:27 pm

If you bolt it, I think you need to find bolts that are at least size for size to the holes or maybe a .001" interference so no movement can get started between the hub and gear.

User avatar
Lavoy
Site Admin
Site Admin
Posts: 10937
Joined: Sun Apr 03, 2005 8:32 pm
Location: North Dakota
Contact:

Re: Lost power to one side of my 350

Post by Lavoy » Tue Nov 06, 2018 9:18 am

If the ring gear carrier does not have two dowels in it, I would have it riveted. A bolt does not fill the hole, and they will eventually break from the back and forth.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

jwmurr2000
40C crawler
40C crawler
Posts: 10
Joined: Sun Oct 28, 2018 7:11 pm
Location: West Virginia

Re: Lost power to one side of my 350

Post by jwmurr2000 » Tue Nov 06, 2018 7:45 pm

Any of you guys have any pointers in getting throw out bearing fork out of steering clutch housing? I took the set screw out but it isn't budging. I even used heat.

Post Reply

Who is online

Users browsing this forum: No registered users and 46 guests