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spankyjr1
spankyjr1, Journeyman
Category: Industrial Equipment
Satisfied Customers: 2577
Experience:  I worked on all types of equipment semis,forklifts,farm,ect.
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Main lift cylinder is blowing oil going up or down, but doesn't

Customer Question

Main lift cylinder is blowing oil going up or down, but doesn't leak down
Submitted: 1 year ago.
Category: Industrial Equipment
Customer: replied 1 year ago.
Model 40H
Expert:  spankyjr1 replied 1 year ago.
Hi, my name is ***** ***** you for your question.
Sorry for delay.
You would still need to rebuild cylinder.
Since its not leaking down that just means the o-ring between top and bottom portion of inside cylinder is not leaking but I'm assuming its leaking out top seal during use.
There is more pressure on seals during operation then when just sitting.
Copy and paste this link to open in new tab for cylinder rebuild page 46.
https://csapps.jlg.com/OnlineManuals/Manuals/JLG/JLG%20Boom%20Lifts/30_35_40_45E/Service_3120743_10-01-01_ANSI_English.pdf
Please take a moment to rate my service so that I can get credit for my time.
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The question will still remain open for follow up questions if needed.
spanky
Expert:  spankyjr1 replied 1 year ago.
I'm just following up to see if we resolved the issue or you need more info.
I would appreciate a reply so I know you are happy with my assistance.
Thanks
spanky
Customer: replied 1 year ago.
I have the cyl kit orderedDanny
Expert:  spankyjr1 replied 1 year ago.
Thanks for letting me know Danny.
please make sure you rate my assistance so I get credit for my time otherwise Just Answer does not give me credit.
If you already have thank you.
If you run into problems question will remain open for weeks for any follow up if needed.
Just a NOTE FYI: I worked at a Raymond dealer so we did a lot of cylinder rebuilds,,,after yrs of some guys having come backs from repeat failures we where then required to send out cylinders to get rebuilt by a radiator shop so they could pressure test before re installing.
It does take special seal tools on some cylinders and some rams need to be re chromed for a permanent fix.
Just something to keep in mind check ram very closely,, if you feel any edge on chrome it needs fixed or seal will leak again.
spanky

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