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At Minimum, its dying 3-4 times a year here at GJ, I’m pretty sure we have a lot of members who are also weather forecasters in there spare time. Snap on financials are very strong, Is the Franchise model something I’d want to invest in? Absolutely not, it’s not a 40 hour work week and like...

I’m going to be Honest, I have never seen that style of “quick lift” configuration, thanks for sharing. If there is No handle feedback, it’s 3 possible locations. 1. Ram seal is compromised. 2. Release ball/seat is compromised. 3. Overload is Light for Load and or seat is compromised. Left to...

It sounds like an issue with upper ball/seat on the speed side. How are you determining that it’s the “power” side that is releasing on the return stroke? It sounds like the power side is sealing, hence the pressurized oil released when you pulled the valve cap. I’m assuming the lift arm was up...

Cornwell 3/8 drive in 1/4 body standard and long ratchets. If they aren’t New, they are a 9+ out of a 10. SOLD Cornwell Extra Long 3/8 drive ratchet SOLD Cornwell long 3/8 and long 1/2 drive in black industrial, minor surface rust on handle. I didn’t try to hard to clean it up. Sold...

As long as it Engages at every Dog on the way up, and disengages as it moves past to the next one it should be correct. It should need to be manually disengaged to lower completely, which should require you to raise the lift arm to take pressure off the dog and then depress the flipper and...

It’s hard to tell from the picture, but it appears the catch mechanism or the catch flippers themselves are upside down.

Good luck, expect to be disappointed. Start high 60+% of retail and let the market dictate the final price. I’ve never purchased a New SO box, but I’ve read that during promotions they can be bought near 50% of retail New.

Produced a YA-642 also..

Sold by Snap on, Produced by Lincoln.

I’m not aware of any guides or videos on these jacks, I think it’s a SJ-4 but Hydraulic Parts Supply in Sawyer KS can distinguish between the two based off the Ram diameter. PDF

It’s definitely more user friendly than say the S series it replaced, in regards to rebuilding. I never was a big fan of the SJ series jacks, it was Blackhawks big Hoorah before everything went imported and they just tried to make Money off the Brand. As always, Before you fork over the Money...

It’s either a Blackhawk SJ-3 or SJ-4, a side view picture would help me judge length and determine, Definitely not from the 50-60’s, I believe the SJ series came in the 70’s.

A couple things, I’m not sure what a C-cup is, secondly that YA-642 was produced during the Lincoln era, regardless Lincoln nor HW is Manufacturing Hydraulic seals. I will add, the Ya-642 depending on series, used two different sized Ucups. I don’t recall off the top of my head what the series...

I would put eyes on that cylinder bore if your brand new Ucup has damage/grooves.

I would double check the valve components, paying close attention to the Valve order. Top to Bottom Big Weight, Big Ball, small weight and small ball.

I’d say it’s a Walker 757. If it’s a rebuildable candidate, Hydraulic Parts Supply in Sawyer KS sells the Kit for $34.75 if the need arises.

It’s a little late now, but bleeding isn’t done via any valve plugs, it’s a simple process of flushing air that’s in the valve system and allowing any build up of air to escape via the reservoir fill/plug on sealed units. The first jack is 35+/- years old, the immediate problem is more than...

The Oring/Shell in the OP’s picture was utilized to strictly control the longevity of the product, versus the traditional Ucup. The Majority of the Lift equipment in todays marketplace is spec’d to at Min make it thru the warranty period. It’s not near as profitable to build lift equipment that...

I’ve got a set, couldn’t tell you the Brand or the last time I used them. The reason I purchased them was because I had a large pallet jack rebuild order and the brand utilized deep glands that housed the Rod cups.

I guess if you can get that type deal, that’s OK. It’s not the Norm in regards to building Large structures/homes, but neither is 90% down. A payment structure needs to be addressed prior to signing a contract that benefits both parties, keeps everyone honest and on task. When the OP started...