been a while since I broke something (Till NOW)

[SPIKER]

Well (2weekends ago now) I needed to do a bunch of brush hogging in all the Ohio Heat tractor was running fine & had finish mower on back. I dropped it off and whipped around to pick up the brush hog and pulled out of an old plow/till hole & attempted to back up to the brush hog. got closer but had to straighten out some pulled up and tossed it back into Reverse and backed up but wouldn't correct... humm I know it is hot and been having some steering problems (torn seal in steering cylinder I'm sure.) figured huh must have finally blown it fully out. then I looked down and saw this

so after pulling off the plate and the parts still attached to the cylinder I put it into the sand blaster knocked off the rust and hit it with the grinder. I fired up the 110HF wire welder cranked it up to 105 amps and burnt it in over 2 or 3 passes on each side. painted it while still pretty hot and stuck it back on. brushed hogged for 4 hrs in 100 degree heat (she always runs a bit hot but spit a bit of AF once so I cooled her off w the hose knocking out some of the chafe in the radiator...)

Mark

 

[Alien]

Always great when you get a nice straightforward repair you can do yourself. I guess it was as a result of fatigue. (in the bracket)

 

[k0ua]

Ain't it Grand to have a welder? I feel sorry for guys without one.

James K0UA

 

[SPIKER]

repair kept me from getting a lot done, took maybe an hour or so, gashed my hand (left pointer finger) with the grinder attempting to grind out some of the fatigued weld. it is about healed up now was right in the crease of the end joint... finished brush hogging next morning when it was cooler only 85degrees...

 

[EE_Bota]

I have to change my ball joints very soon*, and I will give that area a much closer look thanks to this.

*Not adjustment, simply ruined.

 

[johnk]

Lucky you weren't tooling down the road at 15 MPH when it happened. Glad to see it worked out for you..

 

[sixdogs]

Ain't it Grand to have a welder? I feel sorry for guys without one.

James K0UA

Boy is that is the truth. If you don't know how to weld, sign up for a class at a tech school this fall and your life will be forever changed. Classes fill up fast.
This morning I got up early and fabricated something helpful that will save me a lot of time. Job looks great, cost was minimal and I didn't have to drive anywhere to do it. What a great sense of satisfaction.

 

[doxford jim]

It seems that the Jinma tractors DO have some problems with the steering components.
On my Jinma I have broken the left steering knuckle three times and currently on the fourth one. Each time the piece failed was when I was using the (ZL-60) FEL and lifting a heavy full bucket of sand,wet dirt, clay or snow. Each time the thing just failed without warning.
I have been **** about setting up the steering etc., yet I am still having problems. I attempted a welding repair but it only lasted for about 30 hours use before breaking again. It got me some breathing space but I still had to buy a new piece.

It appears to be a design problem and Jinma haven't responded to my letters (sent email) regarding this problem. Material selection I think is the cause - cast iron used instead of a machined steel component. The cast iron being subjected to bending stresses and breaking easily. I am thinking of possibly getting a new piece made at a machine shop, out of steel - depending on the cost of course.

One of the draw backs of buying a Chinese tractor eh !

Thanks.

Jim

 

[EE_Bota]

It seems that the Jinma tractors DO have some problems with the steering components.
On my Jinma I have broken the left steering knuckle three times and currently on the fourth one. Each time the piece failed was when I was using the (ZL-60) FEL and lifting a heavy full bucket of sand,wet dirt, clay or snow. Each time the thing just failed without warning.
I have been **** about setting up the steering etc., yet I am still having problems. I attempted a welding repair but it only lasted for about 30 hours use before breaking again. It got me some breathing space but I still had to buy a new piece.

It appears to be a design problem and Jinma haven't responded to my letters (sent email) regarding this problem. Material selection I think is the cause - cast iron used instead of a machined steel component. The cast iron being subjected to bending stresses and breaking easily. I am thinking of possibly getting a new piece made at a machine shop, out of steel - depending on the cost of course.

One of the draw backs of buying a Chinese tractor eh !

Thanks.

Jim

That is what I was thinking when I read your post: a built-up steel one instead of cast.

 

[SPIKER]

Mine has 500 or so hours on it, though in the last few years (it is a 2002) it has not been used like the first 350 hrs was. It was 80% bulldozer for those 350hrs and in the last 5 years tractor & tree remover for the last 150hrs over 4 years. Brush hogging and mowing being 80% of the 150 hrs in the last few years. Plowing using a 2 bottom Fergie plow is pretty hard on it too and cutting across the end rows might have helped add all that extra torque onto the broken push pin/plate. was easy repair like all the others this one didnt need spare parts just my grinder welder and wrenches.

Would sure like to have something more than the JM284, maybe a 354 for my place.

If you have done that much damage to the JM you own maybe have too much steering throw (hitting stops too hard causing over force onto the cast part.) Make sure your steering cylinder bottoms out right at the stops of the wheel/steering pivot. Also next thing to check is the pressure relief on the steering side (not familiar on your machine) but would assume there is some sort of pressure relief valve on it.


Mark