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Galion 125 crane, rotary valve takes 10 of #8 and one of #7 there's 10 grooves on the cylinder, where does #7 oring go?
- Thread starter Jeff R Anderson
- Start date
Welder Dave
Senior Member
Looks like it goes above #8 and both go on the top of the main internal part #9.
My best guess is that it goes at the bottom as a dust seal and someone has got the callouts in the parts book mixed up. Is there any kind of counterbore or chamfer in the bottom of the outside housing?
Also, I think this may the first time I've seen a swivel with plain O rings for the main sealing areas. Where I have seen ones with O rings, they have been as expanders for square section seals. Much like the two-piece piston seal on a hydraulic cylinder.
Also, I think this may the first time I've seen a swivel with plain O rings for the main sealing areas. Where I have seen ones with O rings, they have been as expanders for square section seals. Much like the two-piece piston seal on a hydraulic cylinder.
Jeff R Anderson
Member
I studied the drawing and I've come to the conclusion it goes on top to seal the inside diameter of the barrel and the other one goes on the top OD of the cylinder to seal debris from ingress through the top plate hole in its center
Jeff R Anderson
Member
I believe you are correct
Welder Dave
Senior Member
Cmark might be right too that the parts book is marked wrong and it goes on the bottom.