I have a l2900dt 1997 model and am working on the hood.I took the loader off an la480 and tried my back lift and it will not operate now could someone tell what i need to do after removing the loader. I took the long hose that is left on the tractor and connected it to the other male plug but nothing but no hydralic lift for the fining mower on the back.I also tried it with all the hoses not hooked to anything won't lift ,it was fine till i set loader off.Thank for any help i need to mow tomarror.