Brakes on Jinma 284

Sorry I can’t help you, I’m not experienced with wheeled tractors. I would have thought that one of our veterans would have chimed in by now.

Unfortunately it appears that some tractor dealers no longer participate in the forums. You might try contacting them directly.

I do not own a jinma do you know if it uses dry or wet brakes?

I think he needs an owner’s manual and parts book. But I’ll betcha he’s gone.

Bob my dong feng 204a does not have a glass sediment filter on it but has a fuel tank screen and a screen in the banjo fitting at the manual pump . I am thinking of getting rid of both of those and adding a sediment filter with a screen so I have a visual reference, you see anything wrong with that idea? Oddly the tank screen is finer than the one in the banjo fitting and has plugged up in the recent past.

Sorry I’m late to the party. Looking under the tractor the pedal rod disappears into the Trans/rear end assembly, so I’m guessing wet. My e-brake is dropping the box blade   :whistle:

I would keep the banjo fitting screens and remove the in-tank screen because they are a bugger when they get plugged up, and install an inline filter somewhere convenient to provide for visual inspection. I installed one of these as my primary fuel filter (you still have the secondary spin-on filter, right?). The only problem with NOT having a sediment bowl is that there is no longer a means of extracting water or moisture from the fuel. I stick my tank with Kolor Kut periodically to test for water. https://www.amazon.com/Kolor-Kut-Ounce-Water-Finding/dp/B00905UC5E/ref=sr_1_1?ie=UTF8&qid=1530106137&sr=8-1&keywords=kolor+kut

ok , I am placing a shut off valve at the tank and adding a glass sediment bowl with a internal screen at the manual lift pump and will leave the screen in the banjo, and yes there is a spin on in place.

Not sure what fuel filters have to do with brakes on a 284, but I have noticed that the brakes are worthless on a really steep hill. Better be in a low gear before you descend.

yeah I saw Bob was watching this and I wanted his thoughts , I wonder about the Jinma , the brakes on my foton wet brakes and dong feng dry band brakes both are pretty good. Do the brakes help with turning tight turns if you unlock the pedals in two wheel drive? Some do not know you pretty much defeat using the brakes in turning in front wheel drive assist (4 wheel drive) mode.

There have been a couple of recent posters that have asked questions and then completely disappeared. Imo, when a post is abandoned by the OP then it’s a free-for-all. I’ll speculate though that sometimes an OP hears information they don’t want to hear, and just go away without responding. I think, out of common courtesy, a response is required. Even a “Thanks for that” would suffice.

I agree Bob. Another annoying one is dealers that have a contact form but never reply to them. Last weekend I was pulling out some rather large quaking aspens with a grubber and a chain hooked to the bucket hanging over the garden fence, some big enough to spin the tires . At one point I turned the front wheels not realizing they were in the ruts left by the rear tires. Last time I did something like this I broke a weld on the steering ram mount. I must have made too good of a weld because this time I blew a hose. I went to the closest dealers website and they don’t list an email address but have a contact form. I filled it out with what I’m after and nothing. No contact, zero, nada. I guess I’ll give the business to the local implement manufacturer, they can make or repair anything.

not to bring this to this forum but have we not seen recently rudeness across a lot of society, it seems kinda like internet trolling is expanding where very few know how to be courteous.

David: Exactly. A sign of the times. Good manners and common decency seem to be disappearing.

Tinbender: Maybe some dealers are succumbing to the current political climate. Or, maybe they’re just too busy?

I’m thinking perhaps it’s neither one.  I guess I should have just called. Maybe I’m one of the few that took the time to type out what I wanted instead of waiting until Monday to call?  I’d like to think this is something the website design service upsold that nobody ever used, and not anything else. Maybe it’s just me getting cranky in my old age.  :unsure:

you never know maybe it ended up in the spam file, I have had inquires end up there. Which when using a business link to contact why would it route it there? but oh well.

I called them yesterday morning and ordered the hose and some other small parts. I didn’t mention my experience with the website to the person I spoke with, she seems really nice and I didn’t want to start off her day with a negative comment about something she had nothing to do with. I’ll make another call this week and find someone who would know how to fix this. :good:

Good idea.

Hea  Bob can you have to much turbulence in a glass bowl fuel filter to make it ineffective . The one I put on my small 20 hp is much more active(like a washing machine) than the fuel filter on my 50 hp. It spins the fuel around so much I would think it would break up any particulate or put water in solution  until it made it small enough to pass thru. But there is one more screen and the spin-on filter to the engine side of this one. I would like to catch any water here. should I try to rubber mount it and see if vibration is some of the issue?

DavidPrivett wrote:

Hea Bob can you have to much turbulence in a glass bowl fuel filter to make it ineffective . The one I put on my small 20 hp is much more active(like a washing machine) than the fuel filter on my 50 hp. It spins the fuel around so much I would think it would break up any particulate or put water in solution until it made it small enough to pass thru. But there is one more screen and the spin-on filter to the engine side of this one. I would like to catch any water here. should I try to rubber mount it and see if vibration is some of the issue?

Quote

Yes. Diesel fuel and water are miscible just like hydraulic oil and water. Since the specific gravity of #2 diesel fuel is around .88, it is lighter than water and will readily settle out. Water, along with debris, will sink to the bottom of a sediment bowl. However, too high of a velocity can create a toroidal effect and become homogeneous. I think isolating vibration would have little effect to overcome that. However, if the swirling motion is enough to create a centrifugal force then the water will be thrown to the outside of the bowl and settle down the sides to the bottom. Racor filters operate on this principle of a static centrifuge.

ok I will try a bigger glass bowl filter and I think hopefully that will slow down the flow  turbulence. (well I guess that is what it is)

It seems that you have an unusually high flow rate for an inline distributor fuel system which is usually associated with unit injector fuel systems, where fuel is used to carry away heat from the injectors. Maybe you have a by-pass back to the tank downstream of the lift pump? (I have this setup on the dozer because I have an electric lift pump and I don’t want it to “deadhead”).

well I put a glass bowl sediment filter on it off a 8n ford on it( half again bigger than the briggs filter that I had put on it) and at a idle all looks good 1/2 throttle some  it looks like air bubbles  start circling from top to bottom and at WOT it looks like a spa with the air jets wide open, but it runs just fine. May be that is why it did not have one from the factory , I will look at the way the excess fuel is taken back to the tank.

Hmm. You shouldn’t be seeing any air bubbles at all. Sounds like you’re sucking air somewhere. Are you using any thread sealant? How about the bowl gasket?

Yea I was thinking how it would be possible not to have a pressure leak and have  a vacuum leak hummm . I am going to look at it this morning and see if there is any leakage anywhere, from a over night sit.

well everything is dry , there is a shut off valve between the tank and the sediment filter when I got it reved up and the bubbles are a flying I shut off the valve and the bubbles stop quickly, so I was thinkin it has to be sucking air from around the valve shut off stem. I took the valve out and I am still getting the air, still running fine. no leaks . I am stumped. Could there be something in the tank with the way it circulates that is doing this?

Ok, so it’s not the bowl gasket or the valve stem seal, and everything is dry around all the threaded connections. I can’t imagine a lift pump having such suction as to cause cavitation bubbles. Is there an in-tank screen? Some tractors have them but they are usually a part of the sediment bowl/valve assembly.

no screen in the tank  I eliminated it and that is a partial reason I added the sediment filter. I looked in the tank with a flashlight and the I guess over fuel tube that comes from the injectors seems like it is creating flow in the tank, I thought that they did not bypass that much excess fuel. but still that goes in the top of the tank the fuel pick up is under 8 inch’s of fuel, how can that be a source of a problem???!!! I think I am gonna call it good, since I do not really have a running issue, unless you got any ideas.

The line that comes out of the fuel injection pump takes the unused fuel back to the tank. On some engines the line will go directly back to the tank, others will go via the injector leak-off lines back to the tank. You can expect a reasonable volume of fuel to return to the tank. That’s a head-scratcher for sure, but if it’s running well let’s not fix it.