jay.krause01
New member
A friend gave me a 1958 Mercury Mark 58e, very cool looking engine by the way. It supposedly sat for 3 years before he gave it to me, and it sat for another year before I got it running, which was way longer than needed. All I had to do was repair the distributor and it fired up like it hadn't been sitting more than a week.
The problem is the water pump wasn't working. I pulled the lower unit and the cap for the impeller. The groove for the pin that holds the impeller around the driveshaft is chewed up. There's a small chunk of the driveshaft missing.
I have everything disassembled as far as I can get it, but I can't get the driveshaft out. I'm hoping to mill a new groove on the other side of the driveshaft to keep the impeller in place. I would much rather mill a grove for a woodruff key rather than a small pin, but I don't know if there is an impeller that will fit. I have the the screw removed from the bottom of the driveshaft that holds the pinion gear on, but I cant get the darn thing to slide up and out. I've tried using a slide hammer to pull it out, but I'm afraid I'm going to brake something if I get any more aggressive. It does freely turn, but it feels and sounds like there's a bearing that needs replaced. All the gearing and shifter components look amazing. Hard to believe this thing is 63 years old. There is also a type of cup that the impeller sits in. It looks like it may unthread from the lower unit housing, but there's a set pin holding that in that I also can't seem to remove.
If anyone has any idea how to continue this adventure please educate me, I am at a complete loss at this point.
The problem is the water pump wasn't working. I pulled the lower unit and the cap for the impeller. The groove for the pin that holds the impeller around the driveshaft is chewed up. There's a small chunk of the driveshaft missing.
I have everything disassembled as far as I can get it, but I can't get the driveshaft out. I'm hoping to mill a new groove on the other side of the driveshaft to keep the impeller in place. I would much rather mill a grove for a woodruff key rather than a small pin, but I don't know if there is an impeller that will fit. I have the the screw removed from the bottom of the driveshaft that holds the pinion gear on, but I cant get the darn thing to slide up and out. I've tried using a slide hammer to pull it out, but I'm afraid I'm going to brake something if I get any more aggressive. It does freely turn, but it feels and sounds like there's a bearing that needs replaced. All the gearing and shifter components look amazing. Hard to believe this thing is 63 years old. There is also a type of cup that the impeller sits in. It looks like it may unthread from the lower unit housing, but there's a set pin holding that in that I also can't seem to remove.
If anyone has any idea how to continue this adventure please educate me, I am at a complete loss at this point.