Thank you for this informative video. At first I thought it was a failed hose. I hate those videos that say "watch to the end". It may be helpful to say about how much time on the lift, how many lifts, when installed so that we can get an idea of maintenance for a hydraulic tube. Now I'm thinking you better do the other cylinder, too.
10:36 Isn't there a seal in the cylinder bore that the gland butts up against or has to slide under? I've never in my life hand a gland go back on that easy. Most of the time getting that wire to start is a royal PITA with new seals because the gland never want's to sit that low to line up.
There isn't a seal on that side of the gland since it is a one-way cylinder, only a dust seal on the rod. The fluid enters the other side of the piston via a passageway in the rod from the fitting that is installed after the gland is slid on. All that makes life much easier for the mechanic!
How did you bleed all the air out of the system?...or does it fix itself after running it up and down a few times?...and why didnt you pump fluid from the pump to the cylinder before hooking the hose back to it?...sorry for all the questions, i worked in an auto shop for a while and always wondered about these lifts is all and i want one for my little dream shop one day...great video
You can get the kit on Amazon. Make sure to order the correct one as there were 2 manufacturers of the cylinders that Rotary used. You will need to search using your lifts serial number.
7:42 Have your old man look at this very close. He rolled the backer. You can tell because it is not sitting square in the groove. The OD of the backer is facing the piston end (rolled 25 degrees clockwise). On a computer you can advance singe frames at a time pressing < or >. 7:52 You can see the backer on the left edge is proud of the right side. The face we are seeing wants to be rotated left to face the left hand grove. Will it work? Yup. Will it last? Probably. Will it make another 35 years? Dunno.
Thank you for watching our video! I reviewed the footage and paid very close attention at the times you mentioned. While the backer twists while it is being installed, once it is in the grove it appears to be flat all the way around. I do not see any twists in it after it is in the grove or when the cylinder is being rotated while the blue o-ring is being installed. The blue o-ring also appears to be the same height all the way around after it is in place. Thank you for your concern. Edit to add: The backer is wider than it is tall. If you notice when it is being installed with the 1/4 turn clockwise it does not fill the groove. After it flops back into position it fills the groove completely. Carefully watching below the screwdriver you will see the flat (top) side did drop in and it rotated behind the thumb that was blocking the camera view. You have impressed with your attention to detail...... !!
Thank you for this informative video. At first I thought it was a failed hose. I hate those videos that say "watch to the end". It may be helpful to say about how much time on the lift, how many lifts, when installed so that we can get an idea of maintenance for a hydraulic tube. Now I'm thinking you better do the other cylinder, too.
We agree, and did rebuild both cylinders at the same time.
10:36 Isn't there a seal in the cylinder bore that the gland butts up against or has to slide under? I've never in my life hand a gland go back on that easy. Most of the time getting that wire to start is a royal PITA with new seals because the gland never want's to sit that low to line up.
There isn't a seal on that side of the gland since it is a one-way cylinder, only a dust seal on the rod. The fluid enters the other side of the piston via a passageway in the rod from the fitting that is installed after the gland is slid on. All that makes life much easier for the mechanic!
How did you bleed all the air out of the system?...or does it fix itself after running it up and down a few times?...and why didnt you pump fluid from the pump to the cylinder before hooking the hose back to it?...sorry for all the questions, i worked in an auto shop for a while and always wondered about these lifts is all and i want one for my little dream shop one day...great video
They Self Bleed!!!
I have the same two post Rotary lift , I gotta repack mine where did you purchase your packing kits from? Great video!!
You can get the kit on Amazon. Make sure to order the correct one as there were 2 manufacturers of the cylinders that Rotary used. You will need to search using your lifts serial number.
And oh yeah, it may not need to be said, but "Old guys rule!"😘
Lucky nobody got hurt when the lift failed. Surprised it actually failed that lift doesn't look that old.
The lift is approximately 35 years old.
7:42 Have your old man look at this very close. He rolled the backer. You can tell because it is not sitting square in the groove. The OD of the backer is facing the piston end (rolled 25 degrees clockwise). On a computer you can advance singe frames at a time pressing < or >.
7:52 You can see the backer on the left edge is proud of the right side. The face we are seeing wants to be rotated left to face the left hand grove.
Will it work? Yup. Will it last? Probably. Will it make another 35 years? Dunno.
Thank you for watching our video! I reviewed the footage and paid very close attention at the times you mentioned. While the backer twists while it is being installed, once it is in the grove it appears to be flat all the way around. I do not see any twists in it after it is in the grove or when the cylinder is being rotated while the blue o-ring is being installed. The blue o-ring also appears to be the same height all the way around after it is in place. Thank you for your concern. Edit to add: The backer is wider than it is tall. If you notice when it is being installed with the 1/4 turn clockwise it does not fill the groove. After it flops back into position it fills the groove completely. Carefully watching below the screwdriver you will see the flat (top) side did drop in and it rotated behind the thumb that was blocking the camera view. You have impressed with your attention to detail...... !!
Hey there my rotary 12k lift shakes while lowering down any advice
Your Rotary lift is either cold or scared and needs a blanket! Ok, jokes aside, I do not know what would be causing that.