I have an old floor jack (from back when things were made to last.) Anyways it has been leaking from what I believe to be the full screw. Had my son take the screw out to fill it and out shot a spring, a dent ball, and a small 1" long rod. Problem is I didnt see in which order these came shooting out. Anyone able to help me out? Its red with a white handle, 3000lbs lift, has a decal that is really worn but looks like the brand starts with a D. Maybe someone can help me out.
Help with Old floor jack repair
- Thread starter heiner921
- Start date
1st and foremost that is the Not the Fill hole, Secondly you are missing 2 components in your picture, 1 small ball, and 1 small weight/spacer. It's possible that they are still in the hole, If So... The order is as follows 1st in to Last.
Small ball, Small weight, Big Ball, Big weight, Spring and Valve plug. In regards to a seal, Yes... It probably had a copper crush washer, and it might be on the hydraulic Jack body still.
I see you edited the picture, I can see the copper washer in the hole, my guess is it's leaking around the release, and working its way down. I suspect your Jack is a Dayton, that model was sold under various brands, Notably a Weaver WA-67.
Hope this helps
Small ball, Small weight, Big Ball, Big weight, Spring and Valve plug. In regards to a seal, Yes... It probably had a copper crush washer, and it might be on the hydraulic Jack body still.
I see you edited the picture, I can see the copper washer in the hole, my guess is it's leaking around the release, and working its way down. I suspect your Jack is a Dayton, that model was sold under various brands, Notably a Weaver WA-67.
Hope this helps
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I wouldn't mess with the copper washer, it more than likely still good. If memory serves the fill plug is to the left side of the release, it's on the other side of the handle assembly. The only other leakage point on the back would be the overload plug, it's right above the plug you already removed and has a concave freeze plug (normally staked) over it. I would reassemble and clean it up so you can actually determine where the leakage is coming from. Truth be told... Probably time for a rebuild if it's a good candidate.
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There are multiple places online to secure a seal kit, HPS in my signature is solid place (do some price checking), the majority of seal kits include New Valve balls along with seals, but weights are generally not included. It's not a complicated part, it only aids in seating the ball quicker, as long as it's not too long to prevent the upper ball from seating you will be fine, a small piece of round/square stock a hair smaller than the lower ball will suffice. I also reccomend a complete tear down prior to buying a kit, just in case you have internal issues that would require some machine work versus just a re-seal.
The Weaver Wa-67 seal kit should be compatible with your Jack.
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I don't know off the top if my head, I probably have it wrote down somewhere at the shop. I'd be willing to bet Steve at HPS knows, Drednaut, Dayton, Ausco, Weaver... All the same hydraulics, different color scheme.
Wamsutta
Well-known member
You only have one hole that you don't know which order the parts go in. Try 4 holes without knowing the order! That's what I'm up against. I have 1/2 a mind to take pictures of the thing and send Hiball a PM.
The wrong order can mess things up, force balls into valve galleys they aren't sized for, then you have real problems.
Wamsutta
Well-known member
The wrong order can mess things up, force balls into valve galleys they aren't sized for, then you have real problems.
I don't think anything is being forced anywhere except the fluid being pumped out of the filler hole.
Yes
Surprised, even if I don’t, it’s just a simple measurement, install the lower ball and measure the distance from the top of the lower ball to the bottom of the upper seat, minus enough to allow the lower ball to lift completely. I’d start with roughly a 5/8”- 1/2”.
Well I got home from work and messed with it some more. I put the ball, weight and spring back in hoping for a miracle that the smaller ball and weight was still in there which I could not see by looking down the hole. I then took out the actual fill plug which had a tear in it and will be looking for a plug to replace it. I think this is where my leak was from all along and it just made it's way down the back which made me think it was that copper washer. I filled it with hydraulic jack oil from napa and put the plug back in temporarily.
It's a miracle! It works! Goes up, holds, comes down, jacked up a car, measured how high it was and let it sit for a half an hour. Was still in the same spot. Cha-ching! Did I get lucky or what.
So thank you hiball for your help! Without your help this would have been scrap weight tomorrow.
But yet leaves a mystery. Was the small ball and weight infact still in the valve? Or is this possibly a different design that only has 1 ball and weight?
Searching for a plug to replace this one.
With my fancy digital measuring caliper it looks like the hole is around .300 which would be much bigger than 1/4" but just under 5/16" or could it be metric? 8mm is just a tad more than .300
It's a miracle! It works! Goes up, holds, comes down, jacked up a car, measured how high it was and let it sit for a half an hour. Was still in the same spot. Cha-ching! Did I get lucky or what.
So thank you hiball for your help! Without your help this would have been scrap weight tomorrow.
But yet leaves a mystery. Was the small ball and weight infact still in the valve? Or is this possibly a different design that only has 1 ball and weight?
Searching for a plug to replace this one.
With my fancy digital measuring caliper it looks like the hole is around .300 which would be much bigger than 1/4" but just under 5/16" or could it be metric? 8mm is just a tad more than .300
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The ball must have been in there at Min, it wouldn’t work without it. Doubtful it was leaking from the fill plug unless the jack had been overfilled, Since you didn’t know where the plug was located, I’m gonna rule that out. I’m going with the release valve.