Leaky seals in NF hydraulic pump lift

[darkminion_17]

There is a special washer that goes on the stud called a "stat o seal".
As for the other seal, try setting it as little as possible in the bore.

[Rwgarrison23]

Originally Posted by darkminion_17

There is a special washer that goes on the stud called a "stat o seal".
As for the other seal, try setting it as little as possible in the bore.

I didnt see this part in the diagram parts. Can you show me?

[darkminion_17]

the washer or the diagram?

[Rwgarrison23]

Originally Posted by darkminion_17

the washer or the diagram?

You talk about number 53? I fixed that. That stopped leaking.

[athomas]

Originally Posted by Rwgarrison23

I'll do whatever it takes make it work. Speedy sleeve? What are those?

there a thin sleeve made to slide over a worn or undersized shaft to bring it back into tolerance and a good surface for a seal to ride on ! speedy sleeve/redi sleeve.

Redi-Sleeves
Timken offers Redi-Sleeves, which are precision stainless steel wear sleeves designed to be pressed onto a shaft for an enhanced sealing surface. Redi-Sleeves are fast, inexpensive repair options for grooved or worn shafts.

Design Attributes
Timken’s line of Redi-Sleeves feature a strong, durable stainless-steel construction that helps create a corrosion-free sealing surface that may surpass original shaft specifications
Redi-Sleeves have an ultra-thin construction of 0.25mm (0.1″) that allows the original seal size to be used with minimal additional lip loading

[Rwgarrison23]

Originally Posted by athomas

there a thin sleeve made to slide over a worn or undersized shaft to bring it back into tolerance and a good surface for a seal to ride on ! speedy sleeve/redi sleeve.

Redi-Sleeves
Timken offers Redi-Sleeves, which are precision stainless steel wear sleeves designed to be pressed onto a shaft for an enhanced sealing surface. Redi-Sleeves are fast, inexpensive repair options for grooved or worn shafts.

Design Attributes
Timken’s line of Redi-Sleeves feature a strong, durable stainless-steel construction that helps create a corrosion-free sealing surface that may surpass original shaft specifications
Redi-Sleeves have an ultra-thin construction of 0.25mm (0.1″) that allows the original seal size to be used with minimal additional lip loading

Where does this said part can be purchased and how do I k ow what size I need?

[athomas]

Most bearing/seal suppliers can supply or likely on-line can be found ,need to mic shaft and find a suitable size sleeve for the shaft size I'm not sure how small they make them usually they are near the end of the shaft as the supplied installation tool only has a short reach. Sometimes a homemade installation driver has to be made to drive it on far enough . How bad is your shaft in the seal area? Is it pitted or worn so far under size that the seal is not making contact ? As someone said on a earlier post perhaps you can move the seal one way or another or add the second seal if not done already. A good machine shop could likely repair this shaft several different ways. One way would be to see what the next bigger ID seal with the proper OD would be and have a sleeve made to fit over the shaft with a slight interference fit and warm it up and slide it in place . As you mentioned earlier is the seal/seals in the right direction . good luck ,hope some of the posted info helps !

[Rwgarrison23]

Originally Posted by athomas

Most bearing/seal suppliers can supply or likely on-line can be found ,need to mic shaft and find a suitable size sleeve for the shaft size I'm not sure how small they make them usually they are near the end of the shaft as the supplied installation tool only has a short reach. Sometimes a homemade installation driver has to be made to drive it on far enough . How bad is your shaft in the seal area? Is it pitted or worn so far under size that the seal is not making contact ? As someone said on a earlier post perhaps you can move the seal one way or another or add the second seal if not done already. A good machine shop could likely repair this shaft several different ways. One way would be to see what the next bigger ID seal with the proper OD would be and have a sleeve made to fit over the shaft with a slight interference fit and warm it up and slide it in place . As you mentioned earlier is the seal/seals in the right direction . good luck ,hope some of the posted info helps !

The shaft on this pump is very clean. No rust or pitted. Just a slight movement. Enough where I can see fluid seeping through the seal. I'm going to try different brand seal sometimes tomorrow and I ordered 2 seals this time. How far in the seal should be? Flushed with the outside surface? The seal with the spring inside facing inside the bore right?

[athomas]

Yes that should be the correct installation, don't push the seals in to far as to block the drain hole as mentioned in an earlier post keep them out towards the pulley end of the fit. Here is the redi sleeve part you'd likely use but if the shaft is not pitted or undersized the redi sleeve should not be needed, is there a bushing/bearing worn that is causing excess play ? CR Seals (SKF) 99050
Thin Wall Speedi-Sleeve - 0.500 in Shaft Dia., 0.250 in Width, Stainless Steel Material

[Rwgarrison23]

Originally Posted by athomas

Yes that should be the correct installation, don't push the seals in to far as to block the drain hole as mentioned in an earlier post keep them out towards the pulley end of the fit. Here is the redi sleeve part you'd likely use but if the shaft is not pitted or undersized the redi sleeve should not be needed, is there a bushing/bearing worn that is causing excess play ? CR Seals (SKF) 99050
Thin Wall Speedi-Sleeve - 0.500 in Shaft Dia., 0.250 in Width, Stainless Steel Material

The only bushing there is inside is the idler gear.