350 b reverser leak

Post support questions about your JD350 and newer crawler here
Clickittyclack
MC crawler
MC crawler
Posts: 5
Joined: Sat Sep 29, 2018 3:36 pm

350 b reverser leak

Post by Clickittyclack » Mon Oct 01, 2018 11:22 pm

Sudden loss of fluid while running, stopped moving in any direction. Whats odd is after refilling it runs out very fast but no sign of leaking externally, Thanks

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

Re: 350 b reverser leak

Post by Stan Disbrow » Tue Oct 02, 2018 12:16 pm

Hi,

Well, it must be running into the transmission....

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)

User avatar
Lavoy
Site Admin
Site Admin
Posts: 10936
Joined: Sun Apr 03, 2005 8:32 pm
Location: North Dakota
Contact:

Re: 350 b reverser leak

Post by Lavoy » Tue Oct 02, 2018 2:42 pm

Check cooling system if it has a radiator cooler for the reverser.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

User avatar
gregjo1948
350 crawler
350 crawler
Posts: 1000
Joined: Mon Aug 30, 2010 5:58 am
Location: Newark Valley,NY,USA

Re: 350 b reverser leak

Post by gregjo1948 » Wed Oct 03, 2018 4:18 am

Stan Disbrow wrote:
Tue Oct 02, 2018 12:16 pm
Hi,

Well, it must be running into the transmission....

Stan
That's what I thought at first but then I thought wouldn't it have to have 2 seals fail to get into the trans.? He said it happened quickly which leads me to believe that the fluid was being pumped out and Lavoy might have the right idea.
JD 350B diesel 6way blade, Case 580B Loader/backhoe, Farmall 504 high crop w/ flail boom mower, International 404 , International 284 diesel w/belly mower, 1972 Ford F600 dump truck, Galion 3-5 roller, Allis Chalmers D17, 1620 Ford

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

Re: 350 b reverser leak

Post by Stan Disbrow » Wed Oct 03, 2018 7:11 am

Hi,

Yes, he also has a good place to look. I thought of that, but would expect oil out of the reverser and into the cooling jacket to push fluid out of the radiator overflow. The pressure inside the reverser is much greater than the radiator cap could hold back. And, then you'd have that mix all over the ground.

With nothing coming out onto the ground, that pretty much leaves the trans, which can probably take a couple reverser loads of oil before it spits out somewhere. But, maybe your coolant was low and the oil had someplace to fit.

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)

Clickittyclack
MC crawler
MC crawler
Posts: 5
Joined: Sat Sep 29, 2018 3:36 pm

Re: 350 b reverser leak

Post by Clickittyclack » Wed Oct 03, 2018 7:29 am

I check all fluids often, before and after running, trans levell has not changed, sat over winter and lost antifreeze but i think that is a cold water leak, have put 15 gallons of oil in this, it pumps out immediately on startup

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

Re: 350 b reverser leak

Post by Stan Disbrow » Wed Oct 03, 2018 7:58 am

Hi,

Only other place I can think of for it to go is into the bell housing. There is a weep hole on the bottom IIRC, but often times it gets plugged up.

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)

User avatar
gregjo1948
350 crawler
350 crawler
Posts: 1000
Joined: Mon Aug 30, 2010 5:58 am
Location: Newark Valley,NY,USA

Re: 350 b reverser leak

Post by gregjo1948 » Thu Oct 04, 2018 3:17 am

Stan Disbrow wrote:
Wed Oct 03, 2018 7:58 am
Hi,

Only other place I can think of for it to go is into the bell housing. There is a weep hole on the bottom IIRC, but often times it gets plugged up.

Stan
With no gaskets to seal between the housings, I'd think it would at least be dripping. Maybe better check engine oil to see if it's pushing into the oil pan. That's quite a stretch.
JD 350B diesel 6way blade, Case 580B Loader/backhoe, Farmall 504 high crop w/ flail boom mower, International 404 , International 284 diesel w/belly mower, 1972 Ford F600 dump truck, Galion 3-5 roller, Allis Chalmers D17, 1620 Ford

dtoots1
350 crawler
350 crawler
Posts: 1162
Joined: Fri Nov 30, 2012 8:54 am
Location: akron, ohio

Re: 350 b reverser leak

Post by dtoots1 » Thu Oct 04, 2018 8:29 am

well clickityclack,
where are you located?....
if you have pumped 15 gallons thru the reverser, how much are you adding at a time? surely aint 15 one time. and you say tranny level not changed? what about any other fluid levels? steering? finals? rad? are hydraulics separate on 350? its gotta go somewhere..
leastways you know pump is working since pumps out when you start it.

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

Re: 350 b reverser leak

Post by Stan Disbrow » Thu Oct 04, 2018 8:57 am

Hi,

Hydraulics are separate on a 350. Tank on the RH of the seat, pump out in front of the engine. Reverser has its own pump on the input shaft. Reverser housing is the tank. The oil goes to a cooling line in the radiator, so that might have been it. Or, past the seals into the bell housing or back into the trans. Trans uses the same oil, so it wouldn't be obvious but the level hasn't risen.

This is a B, so it has dry steering clutches. If it were a C or a D, reverser oil is used to make up the steering clutch packs, so it could be in one of those areas if a clutch seal failed. But, being a B, reverser oil isn't sent to the steering clutches. The B uses pressure plates to make up the steering clutches.

He hasn't said if he has power steering assist or not. Those cylinders are run off reverser oil pressure. But, they leak into the trans, IIRC. And, again, no tell-tale rising of the trans oil level.

Gotta be going somewhere. And, I don't know how much oil loss equals loss of reverser 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)

Clickittyclack
MC crawler
MC crawler
Posts: 5
Joined: Sat Sep 29, 2018 3:36 pm

Re: 350 b reverser leak

Post by Clickittyclack » Sun Nov 01, 2020 11:45 pm

Ok here is a update, The machine is a C, very sorry, my bad, three times I added reverser lube, removed radiator to have coolant leak repaired, cooler tested and held pressure, no sign of oil in cooling system, no change in trans level, located in southwestern Pa. Thanks to all

User avatar
gregjo1948
350 crawler
350 crawler
Posts: 1000
Joined: Mon Aug 30, 2010 5:58 am
Location: Newark Valley,NY,USA

Re: 350 b reverser leak

Post by gregjo1948 » Mon Nov 02, 2020 3:33 am

Being a "C" model 350, I'd check the steering clutch housings for excess fluid.
JD 350B diesel 6way blade, Case 580B Loader/backhoe, Farmall 504 high crop w/ flail boom mower, International 404 , International 284 diesel w/belly mower, 1972 Ford F600 dump truck, Galion 3-5 roller, Allis Chalmers D17, 1620 Ford

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

Re: 350 b reverser leak

Post by Jim B » Mon Nov 02, 2020 11:26 am

Something just doesn't seem to add up to not seeing any leaks or compartments over full, to me. According to a 350C spec sheet on the Non-Current JD Construction equipment site the reverser holds 10 quarts. You say you used 15 gallons total in filling it 3 times. That would be an average of 5 gallons (20 quarts) each time, twice what it holds. If the transmission and steering clutches/finals are common sump, as it appears from posts on this and other sites, (I don't know first hand that they are), the transmission dipstick should show way over full. If they are not and the reverser oil is going directly to the steering clutches, they will be way over full, the spec sheet said they require 10 gallons of fluid, gaining 15 gallons would show. Is there a possibility that oil is pooling in the belly pans and running out while you are operating it? Is the back side of a sprocket damp? I wish I had TM1115, the 350C technical manual to study, do you have the manual so you can study the oil flows? Keep looking, its going somewhere.
Jim

User avatar
LeonardL
350 crawler
350 crawler
Posts: 869
Joined: Thu Oct 06, 2011 7:11 pm
Location: Missouri

Re: 350 b reverser leak

Post by LeonardL » Mon Nov 02, 2020 4:20 pm

I'm a bit late to the party here but I'm with Jim about something isn't adding up. Knowing 350s like I do, there is no way in hells half acre you have put fifteen gallons of fluid in this thing without it showing up somewhere.
Your reverser is separate from the transmission. It has its own self contained sump and if you filled it completely to the top of the fill hole you would only get about five gallons of fluid in it. The reverser has no tie to any of the other components hydraulically. On a 350C & 350D the steering clutches are activated by reserve pressure from the reverser. If a seal is blown at one of the transfer tubes or perhaps a piston seal it can pump fluid inside the steering clutch housings. This is very rare and I have only ever seen it happen once or twice. If one does this, you will have issues with the clutch slipping on that side because the activation pressure is being lost.
If you do have a 350C, then the transmission, steering clutch housings and the final drives all have a common reservoir for the fluid they run in. It is not pressurized or pumped in any way.
Your reverser leak possibilities are limited to cooler lines or fittings leading to the cooler inside the radiator or the drive pump seals inside the bell housing or the seal on the output shaft where it connects to the transmission. There is a cavity there that could hold perhaps a couple of gallons or less. There is a weep hole in the bottom of the front bell housing of the reverser and the cavity between the reverser and the transmission. You may also have a valve body leaking fluid around one of the relief valves or the accumulator. Or worse yet you may have knocked a hole in the reverser case.
Every reverser leak that I ever encountered would show fluid some where. I'm not sure what to say here but something doesn't add up. That is an awful lot of fluid for it to not show. If you have poured as much fluid as you say then there has to be a hole somewhere big enough to throw a cat through.
40 plus years working on JD 350s, 400Gs, 450s and other equipment both Ag and Construction.

Clickittyclack
MC crawler
MC crawler
Posts: 5
Joined: Sat Sep 29, 2018 3:36 pm

Re: 350 b reverser leak

Post by Clickittyclack » Sun Nov 08, 2020 12:58 am

Leonardo, I agree fully, the machine suddenly lost forward propulsion when this loss of reverser fluid occurred, cooling system and cooler has been removed for radiator repair and cooler checked out fine

Post Reply

Who is online

Users browsing this forum: No registered users and 48 guests