2014 RTV X1100C will not move. Hydraulic Oil foaming, HST? Transmission?
- Thread starter Graham
- Start date
no sir. referring to the valves associated with the extra lever.
From the picture my first suspicion is that there is water in the tank. Water can cause the same foam and when left alone the water settles back to the bottom. Give it a few days to settle out then dip a stick in the tank with water finder on the tip to see if there is water there. Good luck
I can check for water again but I drained it twice completely empty and never saw any sign of water. Here a quick vid to show what I'm dealing with. It's like it wants to go but doesn't have enough pressure maybe.
View attachment PXL_20220130_212823206.mp4
View attachment PXL_20220130_212823206.mp4
sorry can't see the vid. you changed the oil in the transmission and the tank? correct?
chances are that the valve plates in the hst are worn and leaking. does it make a difference if the transmission is in H? L? or R?
i don't think so. i think your foaming issue is separate but may be the cause of bad plates. if the plates were causing the foam i think there would be foam in the transmission case also.
but before you tear into it you should atleast check to see if the hst speed control lever is moving in relationship to the throttle and peddle first. make sure this lever isn't loose on the shaft? also check the pressure relief poppet on the transmission....the one that the brake peddle releases when fully depressed. put a little oil on it and cycle it in and out some.
Time for an update. So I changed the oil one more time to make sure no water was found. All good. I went through the system with a fine tooth comb looking for air leaks. Sure enough found a plug on the top of the HST that wasn't fully tight. It's not something I touched before almost missed it. Dummy move from the last guy who looked at it I guess. Fired it up and no more foaming or air bubbles in the oil. Put it in gear and I still have the same problem. Axles spin sooooo slow or not at all.
Seems like it's lacking some pressure so I ripped into the HST. Everything looks clean. The valve plates aren't in great shape but still look better then some of the ones I've seen on the internet. Going to replace them anyways since I have it open. I inspected the lower thrust ball bearing and it does not look good to me. The balls them self have some sort of pitting on them. I thought it was debris but it's definitely imperfections. I can feel them with my finger. The outside walls where the bearings spin looks like it's been grinding and is not smooth at all.
I guess my question now is what can cause this? Also do you think this is my problem or just another problem I found? Thanks all.
Seems like it's lacking some pressure so I ripped into the HST. Everything looks clean. The valve plates aren't in great shape but still look better then some of the ones I've seen on the internet. Going to replace them anyways since I have it open. I inspected the lower thrust ball bearing and it does not look good to me. The balls them self have some sort of pitting on them. I thought it was debris but it's definitely imperfections. I can feel them with my finger. The outside walls where the bearings spin looks like it's been grinding and is not smooth at all.
I guess my question now is what can cause this? Also do you think this is my problem or just another problem I found? Thanks all.
While debris is being emitted, the failure has not achieved a catastrophic condition - but would eventually. I doubt what you are
currently experiencing would be caused by this unless debris has caused some valve sticking/lodging.
good find before a catastrophic failure. good example of maintenance and proper fluid spec is cheaper in the long run.
what does the rotary valve block look like? are there marks or haze on the pistons? just a guess--- wrong spec oil and foaming caused most of the wear. after seeing the thrust bearing and the charge pump i suspect the valve plungers. lets see pics of the brass plates and the valve plungers
