John Deere 270 slow boom lift and bucket curl

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MWM

New member
Joined
Dec 19, 2014
Messages
1
Hi all, I have a 99 model 270 JD skid steer that has a hydraulic problem. The problem is when you start it the boom lift and bucket curl back functions are slow but the more you cycle it up and down the faster it gets until it operates normal, but the power down and bucket dump work fine right away. I dont notice any loss of power in the drives and I have replaced both press releifs in the control valve as well as flushed out the hy-gard oil and replaced it with low viscosity hydraulic oil. Both inline hydraulic lockouts seem to be working correctly an the valve spools have full travel. My local deere dealer has been trying to help, but now both of us are stumped. Any ideas or suggestions would be greatly appreciated, or if anyone else has had a similar issue I'd like to hear it. Thanks.
 

jerry

Well-known member
Joined
May 3, 2007
Messages
2,043
Ice in the system?
Lighter viscosity than recommended may be bad for your drive pumps and motors. I doubt that thinner oil would help anyhow. Take one of the cylinders apart and check and redo the piston seals. It could be that they are worn just enough that they don't seal good until the piston expands with a little heat.
Did this trouble come on suddenly or over time? Did it change with warmer or cooler weather?
 

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