After I installed the new pump on my MF202 I discovered that it was leaking at the hole where the bottom fitting when into it.
When I screwed the fitting (the one I took off the old pump) into it, I was a little worried that it didn't go in very far. So anyway it leaked.
I pulled the pump back off and discovered that the fitting was a little crooked in there. I went to town and got a new quarter inch-18 thread fitting from Napa. I came home and tried the new fitting in the hole. It didn't go in very far so I pulled it out and the first couple threads on the fitting were buggered up.
OK, so back to Napa, I picked up another new fitting and a 1/4"-18 pipe tap. I got home and tried the tap in the hole in the pump. it started a little but wouldn't go any more. It looked straight at all angles so I started to gently work it in like a quarter turn at a time. I thought that would just clean up the first few threads and it would go in nicely the rest of the way.
That wasn't the case. That tap was cutting on every turn. It turned kind of hard like I was tapping a new hole. So now I'm getting worried about screwing up the pump body and having to get another new pump. I measured how far the tap was going in so when I figured it had gone in at least a half inch I pullet out. I screwed the new fitting in the hole. It went in and got very tight. I was almost afraid of breaking it off in the hole but finally got the fitting turned facing the way it should be.
So now I had to put the pump back in. I had a hell of a time the first time, kind of like putting a starter in an 8N. But when I pulled the new pump off, I pulled the reservoir toward me at about a 45 degree angle so it was clear of the distributor and wiggled it back and forth slightly and it came out pretty easy. So I tried putting the pump back in the same way, with the reservoir at about a 45 degree angle towards me. I wiggled it back and forth to get that tight gear to slip into the cam gear and was very surprised when it went it without all the trouble I had the first time. Heck, there must be like .030" only clearance between the pump and the distributor. Removing the reservoir cover probably would have made it a little easier but I didn't want to take a chance of knocking some crud into the reservoir.
Anyway I got the pump in again and I just took the tractor for a spin around the yard and no leaks. Of course the pump works very well.
When I put the fitting into the top hole in the pump, it went in kind of hard also. But no leaks like the bottom one did.
It made me wonder what those holes are tapped for. It seemed like that 1/4"-18 tap should have gone into that bottom hole a lot easier than it did. As I said, it felt like it was cutting new threads all the way. Below is a pic of the standard brass fitting that the hose connects to.
Anybody know if those holes are tapped for something other that a standard 1/4"-18 pipe fitting?
When I screwed the fitting (the one I took off the old pump) into it, I was a little worried that it didn't go in very far. So anyway it leaked.
I pulled the pump back off and discovered that the fitting was a little crooked in there. I went to town and got a new quarter inch-18 thread fitting from Napa. I came home and tried the new fitting in the hole. It didn't go in very far so I pulled it out and the first couple threads on the fitting were buggered up.
OK, so back to Napa, I picked up another new fitting and a 1/4"-18 pipe tap. I got home and tried the tap in the hole in the pump. it started a little but wouldn't go any more. It looked straight at all angles so I started to gently work it in like a quarter turn at a time. I thought that would just clean up the first few threads and it would go in nicely the rest of the way.
That wasn't the case. That tap was cutting on every turn. It turned kind of hard like I was tapping a new hole. So now I'm getting worried about screwing up the pump body and having to get another new pump. I measured how far the tap was going in so when I figured it had gone in at least a half inch I pullet out. I screwed the new fitting in the hole. It went in and got very tight. I was almost afraid of breaking it off in the hole but finally got the fitting turned facing the way it should be.
So now I had to put the pump back in. I had a hell of a time the first time, kind of like putting a starter in an 8N. But when I pulled the new pump off, I pulled the reservoir toward me at about a 45 degree angle so it was clear of the distributor and wiggled it back and forth slightly and it came out pretty easy. So I tried putting the pump back in the same way, with the reservoir at about a 45 degree angle towards me. I wiggled it back and forth to get that tight gear to slip into the cam gear and was very surprised when it went it without all the trouble I had the first time. Heck, there must be like .030" only clearance between the pump and the distributor. Removing the reservoir cover probably would have made it a little easier but I didn't want to take a chance of knocking some crud into the reservoir.
Anyway I got the pump in again and I just took the tractor for a spin around the yard and no leaks. Of course the pump works very well.
When I put the fitting into the top hole in the pump, it went in kind of hard also. But no leaks like the bottom one did.
It made me wonder what those holes are tapped for. It seemed like that 1/4"-18 tap should have gone into that bottom hole a lot easier than it did. As I said, it felt like it was cutting new threads all the way. Below is a pic of the standard brass fitting that the hose connects to.
Anybody know if those holes are tapped for something other that a standard 1/4"-18 pipe fitting?