Leaking spool slices

[SuperTwo]

Im slowly working my way through all the oil leaks on my 1255xl. Its been leaking between the slices circled in the photo. I've replaced the o rings already but it is still leaking. They were a good tight fit and protruded nicely but obviously not enough. Are there any better alternatives to using o rings?
Any suggestions are welcome.
Thanks.

 

[Richard Devon]

Out of interest did you use the Case o-rings?.......sometimes these things can be a bit fussy about what goes in there....also I have found on other machines that there's a specific torque for a slice....too loose and they leak, too tight and the spools bind

 

[Matt77]

I was told this too, don’t over tight as they’ll leak

 

[milkloss]

The O-Rings in a 956 are 16x3mm, the other I can’t remember, but they should be nitrile 90 I think. Did you replace the nylon backers whilst in there? The ones on the 956 are cup shaped and not something I’ve come across before, the slices also wanted a good scrape off as rust was growing between them.

 

[SuperTwo]

Not sure what specific type of o-ring I used, maybe I need a higher spec one that can handle extra pressure?
No back up ring present should I put them in anyways?

 

[milkloss]

Not sure what specific type of o-ring I used, maybe I need a higher spec one that can handle extra pressure?
No back up ring present should I put them in anyways?

I’d get the dealer to look in the book, you might be lucky and find some sizes in some parts lists somewhere. If you used o rings out of an assortment kit then they may well not be quite the right size.

 

[Exfarmer]

very important to use the correct rings, too small and they will obviously leak , too large and they will probably cause issues with operation. I would normally torque them up tight, should be fine with correct O ring

 

[SuperTwo]

Thanks guys, ill call into the local dealer on the way home from work and see if they can tell me what the correct type is and what the proper torque is supposed to be.

 

[SuperTwo]

Quick update, ive ordered the seals through Case,16x3mm as milkloss correctly guessed.
I hope to fit them tomorrow and get it sorted once and for all.

 

[milkloss]

Quick update, ive ordered the seals through Case,16x3mm as milkloss correctly guessed.
I hope to fit them tomorrow and get it sorted once and for all.

I’ve got a bag of 50 here that only cost a few quid, be interesting to see what you get charged

 

[SuperTwo]

2.

I’ve got a bag of 50 here that only cost a few quid, be interesting to see what you get charged

Fiver for the o rings but i couldn't get the back up rings.
Ive tried a few places this morning but no luck. Ill have to wait until monday to try the local seals specialist.

 

[milkloss]

They’re not normal backing rings, they have a lip to encapsulate the o ring. My bits over from doing the 956 pictured below. The white ring is for the 20mm rings, didn’t have any spare 16mm ones as they were all stuffed and I reused them if they looked good

 

[SuperTwo]

They’re not normal backing rings, they have a lip to encapsulate the o ring. My bits over from doing the 956 pictured below. The white ring is for the 20mm rings, didn’t have any spare 16mm ones as they were all stuffed and I reused them if they looked good

View attachment 762918 View attachment 762920 View attachment 762922

Thanks, the backing ring isn't shown on the 1255xl diagram.
So is it item 13 that i need to order to suit the 16x3 o ring?

 

[milkloss]

Thanks, the backing ring isn't shown on the 1255xl diagram.
So is it item 13 that i need to order to suit the 16x3 o ring?

I should think so, yes. 11&13 look to be a matched pair. I know for sure 12&14 certainly are.

 

[SuperTwo]

I should think so, yes. 11&13 look to be a matched pair. I know for sure 12&14 certainly are.

That would make sense as I see you have 3x16 written beside item 11

 

[SuperTwo]

Dealer had the rings in stock, all back together and leak free
Thanks everyone!

 

[big ag]

Would any of you be able to tell me the od of the back up rings I am assuming there slightly bigger than the o rings I have a Marshall tractor with Bosch slices and a very similar type of slice to the ih one but iam having great difficulty in stopping them leaking I can get them from my ih dealer but I don't want to waste there time ordering something that might not fit many thanks

 

[Richard Devon]

I guess a good place to start would be with a hydraulic parts suppliers who deals with Bosch bits.......probably the slice will have some form of ID, use this to ask for a seal kit.

 

[big ag]

I guess a good place to start would be with a hydraulic parts suppliers who deals with Bosch bits.......probably the slice will have some form of ID, use this to ask for a seal kit.

been searching quite already bosch say seals were discontinued in 2001 so just trying to find an alternitive way

 

[milkloss]

Would any of you be able to tell me the od of the back up rings I am assuming there slightly bigger than the o rings I have a Marshall tractor with Bosch slices and a very similar type of slice to the ih one but iam having great difficulty in stopping them leaking I can get them from my ih dealer but I don't want to waste there time ordering something that might not fit many thanks

What size o rings are you using?the ones on my machine we’re fatties. I’ll try And hunt the white rings out and have a measure but they aren’t square profile, they have a lip to help encapsulate the o ring