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You are right on Bob….. and in addition he says ” Construction equipment in particular relies on bypass valves to relieve pressure build-up. “If you’re operating a bucket loader,” Winter explains, “you open a valve that pumps oil into the arm that lifts a piece of concrete. You shut that valve off when you’re through, but the pump is still running and trying to pump fluid into a closed valve.”
If you have closed valve when you release the handle that's a closed center hyd system and the pump simply stops pumping. The poor guy is clueless. There is lots of stuff on this MIT ask and engineer that is way off base.
Like a lot of free advice it's worth every penny
After several tries I don't seem to be able to post the URL. I tried HTML code, plain text, pasting it directly…nothing worked.
The time allotted for this task has now expired.
Bob Rooks said “I'm not totally sold on cloud computing yet.”
Good move Bob. It's the most dangerous thing in computing I have ever seen. No transparency. Where exactly is the data being stored? A lot of it ends up in other countries. Who has access to it? The US has strict breach and disclosure laws. There are almost no such laws outside of the US.
A guy I know lost all of his data in the Amazon cloud. It was supposed to be protected. They said is was only protected to a level one failure but they suffered a level two failure. The meaning of these failure levels are known only to them.
Technically the first year of the 350 crawler was 1966. It depends on what timing marks you are talking about. For injection timing you will need a little plastic window to time it. The window keeps the fuel from running out while you are timing it. I would suggest you go here:
You will find lots of info for your exact questions.
Folks are talking about a much newer valve than you have. It is hard to tell from the pictures. If your valve looks like a square block and the handle sticks pretty much straight up then that is the old style valve. To put it bluntly that valve was so bad than even Jinma stopped using it. It is not worth messing with. You can save yourself a lot of future problems by upgrading the valve. Those old valves were famous for not letting oil through at times an splitting pumps wide open. Check with Ronald at Ranch hand for his valve upgrade. You will find them listed as a supporting dealer on this site.
You may or may not have enough tractor. I have seen 10' wing mowers that require 80HP at the PTO. A 7' brush hog “brand” mower says 50-70 HP tractor.
You should look at your exact mower and find out what the power requirements are.
Anybody can abuse something and get away with it for a period of time. I pull started a CAT 633 scraper (100,000) lbs with a 72 Ford ½ ton pickup. I would not do it again because the clutch was so hot the truck would not untrack itself when I was done. Anything can be overloaded.
Here's the breakdown. Almost all pickups use Dana rear axles.
½ ton truck: Dana 44 Made in semi-floating only
Ring gear diameter 8.5 “
Pinion shaft diameter: 1.375″
GAWR 3,500 lbs
¾ Ton truck: Dana 60 Made in both semi-floating and full floating. (Semi floating in light duty ¾ ton)
Ring gear diameter 9.75 “
Pinion shaft diameter: 1.625″
Semi float axles have GAWR up to 5,500 lbs and the full float axles are rated up to 6,500 lbs.
1 Ton truck: Dana 80 Made in Full float only. Made for class 3 trucks.
Ring gear diameter 11.25″.
Pinion shaft diameter: 2.0″
GAWR 11,000 lbs.
Get a good ¾ ton pickup I would not settle for less. You have to plan for when things go wrong in advance. A few years back I had an almost new Dodge dully pickup and a brand new 20,000 goose neck trailer with electric over hydraulic brakes. I pulled off the freeway to get fuel. Ahead of me was a stop sign and lots of traffic. I pushed on the brakes but it was not stopping as normal. I really laid on the brakes to get it stopped before running the stop sign and crashing into the other cars and a semi truck. When I checked it out I discovered that at the factor they had mounted one of the trailer brake hoses so it rubbed on the inside dual and had rubbed a hole in it. The brake reservoir on the trailer was empty. If I would have had “just enough pickup to get by” I probably would not be here to type this. Electric trailer brakes are not 100% reliable. I always plan for the “what if” the truck has to do all the stopping.
