hozjob
Member
I'm having an issue with my 6410 that perhaps someone could help with?
I recently had to change the pump located inside the front of the transmission. I noticed the shaft was cracked (on the outside, no damage inside) while changing out the u-joints on the short driveshaft from the engine. I think the prior owner had a joint fail, and when the shaft was spinning wildly perhaps it chipped the shaft end? Everything came apart and went together easily as it should, I refilled the system, changed all filters and fired it up. After about 30 mins of loader use my hydraulic temp light comes on, and I'm not sure if its psychological or not, but it seems like the pump in the rear is making a bit more noise than usual from the start I shut the machine down to let things cool (the filter on the right rear side does feel hotter than normal), I check the fluid and find small bubbles in it. I topped off the system to make sure I was good, and everything repeated.....30mins of use, light comes on....shut down. Did I miss a step during reassembly where I should've bled or primed the system somehow? Everything works as it should, steering, breaking, loader and all gears and ranges of the transmission; however, I do feel a little shutter when I'm in a higher range gear. I replaced the temp sensor already, thinking it may be a culprit; and both boom cylinders are currently getting rebuilt because I did have some seal leaking issues, they always leaked just a tiny bit, but I think the hotter fluid caused them to fail all together (just the seals on the shaft end, the piston end worked fine to raise and lower). One other note...the hose that is clamped off the bottom of the reservoir in the rear behind the SCV's appears to have moved a bit, maybe 1/2"?? As if the pressure was increased to the point where it was being pushed off the nipple. I only noticed this because an area where there was no green paint caught my eye... may not even be related, but thought I'd throw in in there too.
Any ideas??
I recently had to change the pump located inside the front of the transmission. I noticed the shaft was cracked (on the outside, no damage inside) while changing out the u-joints on the short driveshaft from the engine. I think the prior owner had a joint fail, and when the shaft was spinning wildly perhaps it chipped the shaft end? Everything came apart and went together easily as it should, I refilled the system, changed all filters and fired it up. After about 30 mins of loader use my hydraulic temp light comes on, and I'm not sure if its psychological or not, but it seems like the pump in the rear is making a bit more noise than usual from the start I shut the machine down to let things cool (the filter on the right rear side does feel hotter than normal), I check the fluid and find small bubbles in it. I topped off the system to make sure I was good, and everything repeated.....30mins of use, light comes on....shut down. Did I miss a step during reassembly where I should've bled or primed the system somehow? Everything works as it should, steering, breaking, loader and all gears and ranges of the transmission; however, I do feel a little shutter when I'm in a higher range gear. I replaced the temp sensor already, thinking it may be a culprit; and both boom cylinders are currently getting rebuilt because I did have some seal leaking issues, they always leaked just a tiny bit, but I think the hotter fluid caused them to fail all together (just the seals on the shaft end, the piston end worked fine to raise and lower). One other note...the hose that is clamped off the bottom of the reservoir in the rear behind the SCV's appears to have moved a bit, maybe 1/2"?? As if the pressure was increased to the point where it was being pushed off the nipple. I only noticed this because an area where there was no green paint caught my eye... may not even be related, but thought I'd throw in in there too.
Any ideas??
