753G lift spool and detent assembly

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A+ Skidloader

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Jan 17, 2008
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753G (triangle headlights--similar to an S-130) is leaking hyd oil out the back of the lift spool and detent assembly, which is part of the hyd. valve. Service manual says to wrap a rag around it to keep balls and spring from being lost during removal. I'd like to remove it--of course WITHOUT losing anything, and walk the spool into my dealer, have him repair it, and bring it back home for the re-install. Any reason why I can't? Any tricks to removal WITHOUT losing the balls and springs? Thanks.
 

Tazza

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Dec 7, 2004
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The rag will stop the balls and spring from shooting out. When you pull the spool out you will loose oil out the hole. As sterlclan has pointed out a few times that using a shop vacuum in the oil reserve tank will limit the oil that is lost. Its not something you can simply hook up and walk away from though. It sounds like you simply need new quad rings that seal the ends of the spool. Get a kit, remove the spool and change the quad rings on the front and back of the spool. If you do loose the balls and spring don't be too worried, they are cheap to replace!
Its really not a hard job to do, just make sure you don't put any side load on the spool when you remove it, they are precision ground and straight to match the hole in the control block. If you bend it, its stuffed. Not that you would have to put any side load on it though, just don't try and twist it past any object that may be in the way is all.
Now, taking the spool to the dealer will do you nothing, the seals may run on the spool but they actually seat at the ends of the control block. The rear one may come out with the end cap on the spool but the other end will still be in the control block.
 
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A+ Skidloader

Member
Joined
Jan 17, 2008
Messages
6
The rag will stop the balls and spring from shooting out. When you pull the spool out you will loose oil out the hole. As sterlclan has pointed out a few times that using a shop vacuum in the oil reserve tank will limit the oil that is lost. Its not something you can simply hook up and walk away from though. It sounds like you simply need new quad rings that seal the ends of the spool. Get a kit, remove the spool and change the quad rings on the front and back of the spool. If you do loose the balls and spring don't be too worried, they are cheap to replace!
Its really not a hard job to do, just make sure you don't put any side load on the spool when you remove it, they are precision ground and straight to match the hole in the control block. If you bend it, its stuffed. Not that you would have to put any side load on it though, just don't try and twist it past any object that may be in the way is all.
Now, taking the spool to the dealer will do you nothing, the seals may run on the spool but they actually seat at the ends of the control block. The rear one may come out with the end cap on the spool but the other end will still be in the control block.
Talked to dealer's sevice manager. He agreed with you, that I needed new quad rings, and nothing gained by bringing the spool into him. As you said, I need to replace the quad rings that seat into the valve block. He did give me a hint--after removing the allen screws that hold the cap on, keep the cap on the spool as it is removed--then balls and spring can't come out/get lost. THANKS!
 
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