jethro00

I removed the chains and rotated the front cranks by hand while side loading them a bit. The only noise I heard was from the pedals. So, I removed all 4 pedals and disassembled them and greased them. I put the chains back on went for another test ride. When the captain pedals, it grinds constantly. It sounds like it's coming from in between the captain's cranks. But, I feel no chain slippage. I have taken pictures of the cranks and the freewheels.

If I need to remove the cranks to grease bearings, do I need a special tool?

As for the freewheels, the outer one connected to the stoker's chain is not causing a problem. So, I would think I should see a difference between the freewheels if one (inner) is worn and the other okay. Because the grinding sound is constant and pronounced, it makes me suspect the freewheel more than a bearing. What do you think?