Saturday, March 23, 2019

Hydraulic cylinder rebuild head aches

Rebuilding this cylinder .But my gland nut tool I have doesn't go that small.
pin holes are only 1/8"

Sometimes its just easier to take them to hydraulic shops for repair . 

No issues getting cylinder off . It was weeping oil out the dust seal .So It's in the shop And have time for the repair 

Some times you have to make the tool to remove nut .Endcap nuts can be impossible to remove . Large washers are left over from some of my groomer builds . Inside where already 1" but had to grind a little more out . Made a template out to drill holes for harden steel pins I ordered .

I have a few of these for adjusting tension on shocks on equipment . 

 Just grind the nub off


Washer where stacked 3 thick before holes are drilled and pins installed .Weld handle to washers . 

Surprised at how solid it fit on 

I'm using a little heat incase there may have been sealant put on threads when assembled . propane did the trick sometimes you have to break the oxy/act out to get them free.



Pretty happy that it came loose . 



Double check kits 


Laid out new seals under old . There were many differences


Dust seal was different but wasn't to concerned since it may have been up graded. New one was an O-ring



Mine also has this extra hard ring that sits on top of O-ring. Not in new kit ?



And then this old O-ring is at least 3 times bigger than the one in the kit .
So

Double checked cylinder #s


and parts break down .
They where all right . Had to reorder seal kit and asked dealer to double check with Toro to see why they are different. I really don't want to get the same wrong kit . Packaging looks like its pick elsewhere for Toro . Might be just a picking error . It will get sorted out eventually.

Just one of those things that come up in this business .  



New kits in , Thanks Bill at Veseys looks like a keeper
Re clean all parts since they have been laying out in the elements for a week,

Pulled old seals to match with new ones . Same seals . Feel much better putting it back together now . I keep old packing paper to lay things out on .Cleans the name of the game when doing this kind of work .


Use your hydraulic oil for lube helps get seals in easily.


In this case re-torque nut to 160 ft. lbs. Reassemble use hydraulic fluid to slide things back together  


 Install on sprayer and check for leaks 


 Boom lighting looks great.


Done . 




2 comments:

  1. Bob,

    I remember picking o-rings for my dad when I was a kid. I made many a seal kit before I was a teenager. Needless to say, quality wasn't always 100% when you get paid with vending machine goodies and canned soda...

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    Replies
    1. Good to know , Thanks , got a chuckle out of the response

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