Hydraulics still messed up 2615 HST also what battery?

Wyld Bill · Nov 28, 2014

Hey guys I really need your help.

First of all does anyone know the largest battery size that fits well in a 2615HST?
What about running a deep cycle battery?
Also a repost from a while back because I still have the problem:

I have a 2004 Mahindra 2615 hydrostatic tractor.
This past summer I let a buddy of mine borrow it (first mistake I know)
While he had it the ailing bucket control valve finally failed completely.
So he marked all the hose connections, removed the hoses, spilled a bunch of hydro fluid on the ground, installed a new control valve, and added Mahindra hydraulic fluid to top it off.
I got the tractor back in late fall and noticed the hydraulics were a bit "jerky"
I didn't use the tractor much until we started getting snow. I changed all of the hydro filters.
Now I'm noticing a real problem with the tractor.
There is a lot of hesitation in the hydraulics. I mostly notice it in the FEL use but some times in the steering too.
It's like a surge, hesitation, accompanied by a noise like "dut, dutttutut" as it is "fetching up"
So could it be that he mixed Mahindra fluid with the John Deere fluid I had in there?
Did he get dirt in the system and ruined the pump?
Could the hoses be hooked up wrong some how?
Am I sucking air???

oldpilgrim · Nov 28, 2014

Air in line.

1. check fluid level. fill if necessary.
2. disconnect all FEL hose connectors,
3. reconnect all FEL hose connectors.
4. run engine and work all hydo cylinders to their maximum extend/retract points for several minutes,
5. recheck fluid levels. fill if necessary.
6. repeat if necessary.
7. probably won't need step 6.

AchingBack · Nov 28, 2014

The factory battery is big enough. Just get one with bigger CCA if you need more power for starting in the cold. I bought an OPTIMA, sealed battery for my 2615. It is the same group size as the original battery. List of Common Battery Case Sizes | BCI Group Numbers