There should be a plate on the lower left dash that has the tractor serial number on it. With that, it is possible to determine the manufacture date. I would guess somewhere in the late 70's to 80's. If up under the left dash, that would probably be the engine oil pressure gauge. It has hydrostatic steering, so if the power steering, it would be from directly under the steering wheel if not one of the oil lines. Steering has it's own separate system powered by gear driven pump on right or left of engine at front. There should be a filler on pump reservoir. Is it instant reverse or the manual transmission with clutch and forward reverse shuttle lever at the left of the dash? Transmission and 3pt oil go in the filler to the left of the shifters. Loader hydraulic oil goes in the right side loader frame post, ahead of the loader control valve. There should be a filler cap there with a dipstick attached. If no dipstick, full is approximately 18" down from top. Loader hydraulic pump is behind grill driven off front of crankshaft pulley by an extension shaft that goes through axle. If it works, should be a link to agco online parts manuals. (agcopartsbooks.com) Enter as a guest, search for 40B or 34A and Massey Ferguson. Picture didn't upload.