Mahindra 2538 6' bounces

[dwalk19]

3 point arms bouncing while at idle, I had 6' brush hog on this am, all morning fine, driving back and hit sone rough terrain, and now 3 point arms/implement bounce while idling or just moving

 

[oosik]

Directly below your seat is a knob. This controls the speed to the rise/fall of the 3-point arms. Turn the knob - open to max up/down speed. Cycle 3-point with brush hog attached thru several up/down cycles. Return knob to mid-point setting. This might solve your condition. I had the exact same situation on my 1982 Ford 1710. No idea what caused the condition but this action always corrected it. Perhaps something to do with entrapped air - I really don't know.

 

[dwalk19]

I"ll have try it in the am, I closed the knob all the way down and put the tiller on and shut tractor off and It drops fairly quickly, I'm thinking it might be something with the valve seals or cylinder

 

[oosik]

Could be - I wish I knew/understood more about the hydraulics on my tractor. For example - which control has PRIORITY on up/down movement of the 3-point. The speed control under your seat or the 3-point position control lever. On my M6040 I can raise the 3-point all the way up - close off the speed control under my seat - the position control lever will not longer control the up/down movement of the 3-point. Even with my heavy duty(1050#) Rhino 950 rear blade on the 3-point - speed control set at approximately half way - the blade will remain up for weeks, months without dropping even an inch.

But there is no question - on my tractor - you close the "speed control" completely off - the 3-point position control lever will no longer control anything.

 

[SPYDERLK]

Could be - I wish I knew/understood more about the hydraulics on my tractor. For example - which control has PRIORITY on up/down movement of the 3-point. The speed control under your seat or the 3-point position control lever. On my M6040 I can raise the 3-point all the way up - close off the speed control under my seat - the position control lever will not longer control the up/down movement of the 3-point. Even with my heavy duty(1050#) Rhino 950 rear blade on the 3-point - speed control set at approximately half way - the blade will remain up for weeks, months without dropping even an inch.

But there is no question - on my tractor - you close the "speed control" completely off - the 3-point position control lever will no longer control anything.

The speed control affects downward motion only. If an implement drops with the speed control all the way closed the lift cyl of the 3pt is leaking.

 

[dwalk19]

Yeah I'm pretty sure the lift cylinder is the problem, waiting to hear back from dealership, I'm afraid this won't be cheap it's 2016 with 110hrs

 

[SPYDERLK]

Yeah I'm pretty sure the lift cylinder is the problem, waiting to hear back from dealership, I'm afraid this won't be cheap it's 2016 with 110hrs

You have ~ 2600 lift at 3pt. Course that doesnt mean you can go running around with that much on and hitting bumps. -- Still - a 6' hog would not be expected to be more than about 1K#. Pretty good safety margin. And on top of the safety factor that should be engineered into components of the 2600# capacity system.

You are not using Pats Easy Change or similar that increase the length of the lift arms, are you?​

 

[dwalk19]

Yes I did have the harbor frieght quick hitch on so it does extend it back some, not much though, but still it wasn't an excessively bumpy road, and he wasn't tearing down it, I wouldn't expect it to cause this issue, I've got alot of luck, mostly bad though

 

[SPYDERLK]

The HF hitch goes on the 3pt - not just the lift arms - so doesnt abuse the lift mechanics as badly as an arm only extension.

I wish you a lucky diagnosis.​

Pls post back and let us know what it turns out to be.

 

[dwalk19]

I dropped it off at the dealer today, probably be awhile for they get to it, I have a video of it but apparently it's not the right format to load