753 hydraulic seals

[ayrkidd]

Hey guys, just got my new seals for the 753 hydraulic block...there certainly is a lot in the little package. Any tips or tricks before I disassemble this thing? I plan on removing it and doing it on the bench. Thanks in advance

 

[Tazza]

Not really, just keep things clean and watch for the detent balls on the lift section. There are 2 inside the cap on the rear end of the spool. Don't try and remove the spring, only do that if its broken. Use lots of oil during assembly. I personally do one section at a time, so loosen the load checks, pull one spool, change seals then re-install. Do the load checks one at a time then tighten them all up at the end.
The most important part is keeping it clean. Good luck, its really not a hard job to do.

 

[perry]

Not really, just keep things clean and watch for the detent balls on the lift section. There are 2 inside the cap on the rear end of the spool. Don't try and remove the spring, only do that if its broken. Use lots of oil during assembly. I personally do one section at a time, so loosen the load checks, pull one spool, change seals then re-install. Do the load checks one at a time then tighten them all up at the end.
The most important part is keeping it clean. Good luck, its really not a hard job to do.

I did it as well, with help from Tazza of course, Just lay it out like you take it out, the balls can be aggravating, I even stretched my springs a little, very little. Grease is handy at holding the balls in place but you still need to put pressure on them to get the cup over. I used a wide jaw welding clamp with just enought pressure to hold the balls down, it worked but you may find another way of doing it. Once you get the balls and cup assembled, the rest is easy.

 

[Tazza]

I did it as well, with help from Tazza of course, Just lay it out like you take it out, the balls can be aggravating, I even stretched my springs a little, very little. Grease is handy at holding the balls in place but you still need to put pressure on them to get the cup over. I used a wide jaw welding clamp with just enought pressure to hold the balls down, it worked but you may find another way of doing it. Once you get the balls and cup assembled, the rest is easy.

I used a cable tie to pull the balls in and slid the hosing over then removed the cable tie.
Yes, grease is VERY handy especially for th load checks or poppets. Put a dob of grease on the poppet and spring to hold it in place for when you need to install it. This will prevent it from falling down the hole and possibly be out of alignment.