running skid loader with damaged pump?

[wdchyd]

Dependable Hydraulic and Hydrostatic in Amityville, NY | 18 Ranick Dr W, Amityville, NY

Equipment Service Association

Baltimore Hydraulics - hydraulic service and repairs



Look for hydrostatic repair service when looking for repair centers.......I'm sure the more you investigate you'll find someone close as you are lucky to be nearer to the bigger cities.....

Once you get the unit out, you can ID this with the model code and some places offer Reman/exchange.......best to remove it then make decisions....

Pics would be nice also......

 

[kidstrustfund]

I do have the repair manual. It would have been nice if I checked the manual before I changed the hose. I have changed plenty of hoses in the past with no problem. I quess I got lucky. Their are test ports located on both lines going from the pump to the motor. I should be able to handle the test after reading the manual. Both forward and reverse on that loop are effected. I am thinking pump. The manual says to service the pump and motor as 1 unit. What happens? I am thinking the pump fails then contaminates the loop which effects the motor. Tom

 

[wdchyd]

Yes, your thinking is right.......when one component fails, it's important to rinse/inspect internals of the mating unit.......they share the same oil when operating......

 

[kidstrustfund]

I went out and messed around with the skid steer today. I added some hydraulic fluid to the reservoir . The fluid was a little low, not bad though. Then I took the fill plug off the pump and topped it off. The fluid was about 1 inch below the top. After filling the pump I noticed the fluid level receding a bit. I put the plug back on and fired her up. Most of the power to the set of wheels were the problem was returned. The noise subsided. The linkage does vibrate a bit more than it use to when under heavy load. but it was no ware near as bad as it was. I ran her 1 hr in the morning and 3 hrs tonight and she has the power back. I think By opening the plug on the pump I purged the residual air in the closed loop that got trapped. I might of been granted a stroke of luck. Thanks for your advice. By conversing with you and talking with a few local mechanics. I was able to get through this . Tom

 

[wdchyd]

A great way to purge after a rebuild or dilema is to raise the drive wheels off the ground before start-up......at idle engage levers in for/rev directions to visually confirm everything's good.......then let it run with all wheels spinning for 15 mins or so in both directions......this will purge air without straining components......:thumbsup:

 

[J_J]

wdchyd,

Would that work with a closed loop hydro system? On our PT, we have a bleed port on the VSP, and we motor the engine over for short periods. We do this when changing out filters and hyd wheel motors.

 

[wdchyd]

JJ,

My experience with doing this would be only if purging after a component rebuild/replacement on a closed loop system.......it doesn't put strain on the hyd system during start-up and prevents the "Oh-$#it" senario......

Also if something wasn't plumbed corrrectly (wheel motor going backwards), then you'd see it rather than have drive motors fighting each other destroying themselves........

Not necessary for regular maintenance work (oil & filters)