861 diesel problems

   / 861 diesel problems #121  
the someone that put that spot weld on was the factory. that ball and spring setup adjusts relief pressure. more spring tension = higher relief pressure.
 
   / 861 diesel problems
  • Thread Starter
#122  
Whoops! Well, that screw is pretty much in the same location, except being held in place by loctite instead of a Willy the wonder-welder looking blob of metal. I thought to myself that little pea of weld could pop off inside my hydraulics. My little screwdriver pried it off pretty easily. It was just stuck to the metal with no penetration at all. The lift was strong before, so I'm gambling that it will be OK. ????

My used injectors came today. I think I'll wait and test them before taking them apart. I just put them in a bowl of diesel to soak. They look much better than the ones I had. These were supposed to have come from a Ford 4000 diesel, but they appear to be the same injector that I have. Sadly, no copper washer included.

Still waiting on my pressure tester, though. Best deal I could find was Diesel Injector Nozzle Tester Pop Pressure Tester Dual Scale Bar PSI Gauge | eBay, but it ships from India, so it may be a few days. It said air-freight, so I hope it ain't on a slow boat. It may not be worth a crap, but if it works for me this first time, I doubt I'll ever need it again.
 
   / 861 diesel problems #123  
I let my Kubota and my truck sit unused for up to three months at a time when I'm traveling for work and they always fire up just fine when I get home. It is always better to run a machine regularly but letting it sit isn't going to hurt it.

I was semi joking about the weights, didn't think you were going to sell them. (But I am interested if you ever decide to. Lol)
 
   / 861 diesel problems
  • Thread Starter
#124  
I bit of good news today, but I still backed up some before moving forward again.

My pop pressure injector tester arrived today. That was fast from India. I was anxious to try it out; first on my used 4000 Ford injectors I found on eBay. Well crappolla, the one nozzle fitting I needed to fit my injectors was leaking real bad. The guy in India who made up the 2 tubing adapters that came with this tester failed to braze the nipple on on one end (the end I needed) It was brazed only on one side, not all the way around and squirted fluid 2 feet when I first pumped it. However, I did have some brazing rods and luckily still had enough gas left in my torch set to finish brazing the tubing like it should have been done in India. It has been a long time since I had done any brazing and I wasn't too sure I could do this thin tubing without any practice, but someone must have been looking over my shoulder. (I wasn't anywhere near that red devil Ford when I did it either:)

I then tested the 4 used 4000 injectors and only 2 of them sprayed out of all 4 ports in the tip and they popped off at about 2000 to 2300lbs, except one that just dribbled and never built up any pressure at all. Then I took out my 861 injectors and tested them. 3 of the 4 sprayed out of all 4 nozzles in the tip and one injector tip was clogged up in 2 ports (this was after cleaning). Also, the pop pressure was about 2300 in 3 and 3000 in one. I finally figured out how to adjust the injector pressure after I figured out that the adjusting tips was frozen up inside all my injector tops. I had to carefully unscrew them from inside the cap top without damaging the threads and chase out the threads. Changed the clogged tip in one and was able to adjust all 4 good injectors to about 27-2800lbs. I'm not sure what this would have cost me if I just took my four injectors to someone to test, but I'm not sure they would have took the time to fix anything; just tell me I needed new injectors. All in all, I'm glad I bought the pressure tester and tested (repaired & adjusted) these before installing them. I'm learning something new all the time; on my own and from you guys here. Thanks. I still need to find 1 copper washer. I hate to do it, but I guess I'm going to have to break down and pay $5 at the Ford dealer for one washer as I haven't been able to find that size anywhere else yet and I'm ready to put this back together.
 
   / 861 diesel problems #125  
In the end, 5$ well spent to put this to bed, push emrods for the gasser red tigers are spendy too!
 
   / 861 diesel problems
  • Thread Starter
#126  
I'm gonna die of old age before I finish this red devil. I got the injectors in and the valves adjusted cold to .015. Engine was a bear to spin over by hand. I put some farm jacks behind the rear wheels with it in gear to help push the tractor forward as I turned the engine from the front to take some of the pressure off the crank pulley bolt that I'm using to turn crankshaft with. I'd also push down on the valve springs to take compression off the pistons when it started building up and getting tighter to turn.

However, when I went to time the engine/injector pump drive there are no numbers visible on the flywheel. I can occasionally see the light hash marks as I spin it, but no degree numbers. If they were ever there, they have worn off. Then to make matters worse the drive slot on top of the oil pump is 180 degrees off when I get flywheel close to my estimated 23 degrees BTDC #1 cylinder. Book says it simply twists and lifts out of oil pump shaft/cam gear to move, but it ain't budging and I can't get a grip on it to pull with any pressure. Even tried sticking a magnet to it to help lift it up. It was dark and started blowing cold rain in on me so I covered the engine up and give up for tonight.
 
   / 861 diesel problems #127  
hmm.. that one be a question for Rick B. ;)
 
   / 861 diesel problems
  • Thread Starter
#128  
Y'all will have to pardon my rant from last night. I was pretty frustrated that I could not see any numbers stamped on the flywheel. Although cold today, I pulled the starter back off from the other side of the engine to look in there through a bigger hole to see if somehow more light would show up the numbers I could not find yesterday. What I discovered made me feel pretty stupid. My book shows the hash marks and numbers on the face of the flywheel facing toward the front of the tractor. Like I said, the hash marks are there, but no numbers. To my surprise (and pleasure) there are also hash marks and the elusive numbers I been trying to find stamped on the outside surface facing to the side away from the tractor around the face plate of the flywheel gear. I could see them plain as day from the hole where the starter goes and marked the flywheel with a marker and turned the engine to 23o BTDC as it is supposed to be. However, I still have to get the pump drive gear shaft out and turn it 180o to time the fuel pump correctly. I hope it also proves to be my lack of experience that makes that sucker pop out and rotate easier than it seemed to want to move last night. I have been volunteered to do grandson watching today, so I had to quit early, but plan to get this fuel pump on and timed correctly before the weekend is over. After that, it should be simple bolt on's to finish this out.
 
   / 861 diesel problems #129  
Good luck getting it wrapped up. Hopefully it will be purring away soon.
 
   / 861 diesel problems
  • Thread Starter
#130  
Feeling like I may be on the downhill side of this refub at last. I got the fuel pump drive gear out and turned it in time; installed the fuel pump and got it timed in the window marks; installed the side and valve cover; made a battery hold down bracket; even began to put the fuel tank back on, however that front bolt is in a cramped spot for my fat hands to reach above the valve cover. It will have to wait until it warms up some tomorrow.
 

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