Hello all, new to the forum. I recently acquired a bobcat M371. After installing new engine and firing up the machine. I tested the hydraulics and drive system separate, starting with the hydraulic pump first, but while is engine running and hydraulic pump spinning, via the v-belt pulley, it has no pressure ! Nor will bucket or arms budge. When I acquired machine , it had 1090 original hours. The second owner bought for project with a bad engine , but never fixed. After picking up the bobcat and starting the restoration process ,I noticed hydraulic filter was missing, it's sense been replaced , along with a new pressure gauge. Could the hydraulic filter being off for a period of time messed something up ? Or does pump need to be replaced or primed ?? Feel free to even txt me with help. Thanks 803-372-2240