Hydraulic Cylinder Question

https://genericparts.com/Services/manualRol-Lift.htm

https://www.liftsplus.com/rol-lift-series-t-e-hydraulic-unit-parts-diagram.html

video's...

https://www.youtube.com/results?search_query=hydraulic+cylinder+rebuild+

Thanks, SE, but this is part of a Rol-Lift stacker, not a pallet jack. The cylinders are quite different. Here’s a photo of the Stacker:

The references are to show the different cylinder construction types and to give a general background on how these cylinders are constructed, and how they may be deconstructed to rebuild or repair...If you cannot find your particular model you can use the general information to give yourself a background of knowledge that will assist you in performing the required task at hand....That is if you prefer not to call the manufacturer for information, or if you do, you may use this as supplemental information going forward....

https://www.youtube.com/watch?v=2KGhZgwmgMI

Deefburger, thanks for this video link. Beginning at 23:30, the machinist shows how to remove the “clip” using a custom wrench and a modified Craftsman screwdriver. I think I can do the same thing using a strap wrench and screwdriver since the cap on my cylinder has no flats.

Yes, and Stef gives a tip or two below as well. Basically spin the cap until you find the end of the clip and then force it out spinning the other way. It is soft steel not hardened like a circlip and the screwdriver is just used to catch the end and guide it out of the hole.

Thanks, Stef, excellent advice!

I thank you. Merry Xmas

I have recently been looking to add hydraulic fluid to a Ricon Series S tail lift fitted to a minibus. My delay has been caused by determining the correct type of fluid; in my case mineral. The type of oil depends on the material of seals and other components within the cylinder.

My comments relate to the fact that there may be more involved in replacing the cylinder components than initially thought. Different oils may not be compatible, types of oil may not be compatible with the type of seal material being considered. Is the viscosity of the oil correct? Has there been any wear on the piston?

Those are my precautionary thoughts; I am not experienced in this matter.

Seasons greetings to all

..."Texaco 01554 Aircraft Hydraulic Oil or equivalent U.S. mil spec H5606G fluid."...

https://www.coachbusparts.com/part_hydraulic-fluid-ricon_ricon-lift-repair-parts_hydraulic-fluid.php

https://www.riconcorp.com/pdfs/32dssp04/32dssp04B.1.pdf

https://www.noe.jxtg-group.co.jp/english/products/lubricants/pdf/ind-4021-1704e.pdf

https://www.aircraftspruce.com/catalog/stpages/aeroshell_bflu_09-27000-QT.php?gclid=CjwKCAiAi4fwBRBxEiwAEO8_HoT61o6pQmxyjt0tTJeZwqoUSLD68FOfk_0Ew6ur9L8EpQ-K2XQtdhoC-joQAvD_BwE

https://www.amazon.com/gp/product/B00FX6V3QG/ref=ask_ql_qh_dp_hza

http://everyspec.com/MIL-SPECS/MIL-SPECS-MIL-H/MIL-H-5606G_5998/

https://www.crownoil.co.uk/guides/hydraulic-oil-guide/

Thank you Solar Eagle for the links and information. I have determined the oil type, Texaco 01554 and the spec details H5606G, from the manual. My problem has been finding a supplier in the UK where I am based. I have been quoted 26 GBP for 5 litres with a 17GBP delivery charge. The minimum quantity that most suppliers have is 100 litres or more. I require about 2 litres.

I am thinking of using another mineral oil to add but somewhat retiscent as I do not really know what oil is currently being used. The only clue is that it is red but so is a good claret!

The minibus is owned by a charity who run a community transport service and so would like to keep the costs down. Perhaps my best solution is to get completely fresh oil, drain the system down, flush with the new oil and refill. Delving into aquiring the oil enabled me to come across the compatibility issues which is why I posted my initial cautionary post.

Seasons greetings to you.

Well I don't know how things work there in the UK, but here we would just offer some advertising space on the bumpers of the buses for charitable contributions...any company that services buses probably has a source for mineral oil based hydraulic fluid, there should be a record someplace as to when the lift was last serviced and by whom, that information might be helpful as to not only a source but also if the need for a fluid changeout is due...Lacking any contributory record of service, I agree a complete fluid changeout is the way to go at the least, and a rebuild at most...I wouldn't open that can of worms without some research either, haha...some backup can be most helpful...

I recently had cause to top up a hydraulic pipe bender and the suggested oil was ATF, automatic transmission fluid. ATF here in horse trail he har is a thin red oil so maybe that is what is used in your instance.

I have ATF on hand as my Nissan Patrol uses ATF in the transfer case, strange but true though it is an anniversary edition and many strange thing are used.