Hi guys, I have a fellow coming to look at my dozer tomorrow so I am just going over it to make sure it is ready for him and since my dozer has been sitting all winter and the seal in the bottom of my hydraulic tank seeps it of course was low on oil so I added oil to the tank but now I can't get my blade to lift. The cylinders are very slowly moving up and down but not enough to raise the blade. Any ideas on how to fix this. Thankyou in advance for any help.
Cat D6C 76A2045
Cat No. 12 8T15616
Cat D2 5U15751