1 water/oil pump. Is this the right seal?? Fri Apr 26, 2013 8:02 am
Fentible
Silver member
Busy rebuilding a spare pump to keep on the shelf. Its a cast Iron impeller and the seal was purchased quite cheaply.
Firstly the spare pump has an additional sender unit screwed into a point that is blanked off with a bolt on my original pump. No biggie just curious as to its purpose.
Now then the seal I have been supplied with as the correct part for a cast impeller pump, has a plastic cage which i will assume is purely for transportation and storage purposes.
The problem is the uppermost seal diameter seems to large for the impeller shaft. The seal through which the shaft enters is a tight fit (or will be), however the seal through which the impeller shaft exits is a larger diameter than the shaft.
I am attaching explanatory photos, but basically, have I been supplied with the wrong seal?? I though at first that the impeller itself may have a boss that fits into the seal but it doesn't. Additionally the impeller shaft appears to have two points of rubbing contact.
Impeller shaft with seal as supplied.
Here you can see that the uppermost seal is a larger diameter than the impeller shaft
As ever, advice from those who know wold be greatly appreciated.
Fent
Firstly the spare pump has an additional sender unit screwed into a point that is blanked off with a bolt on my original pump. No biggie just curious as to its purpose.
Now then the seal I have been supplied with as the correct part for a cast impeller pump, has a plastic cage which i will assume is purely for transportation and storage purposes.
The problem is the uppermost seal diameter seems to large for the impeller shaft. The seal through which the shaft enters is a tight fit (or will be), however the seal through which the impeller shaft exits is a larger diameter than the shaft.
I am attaching explanatory photos, but basically, have I been supplied with the wrong seal?? I though at first that the impeller itself may have a boss that fits into the seal but it doesn't. Additionally the impeller shaft appears to have two points of rubbing contact.
Impeller shaft with seal as supplied.
Here you can see that the uppermost seal is a larger diameter than the impeller shaft
As ever, advice from those who know wold be greatly appreciated.
Fent