Help! JD 770 Dead!

[Whitey]

OK.........thanks guys! I up to the task.....I will print these replys off today at work and proceed with surgery......I was really down in the dumps.....but you know sometimes you can't learn without a little turmoil or hardship in your life. In this case I probally did something stupid and now I must learn from my mistake. I just hope it's too expensive of a mistake.

PS.........my good friend that lives about a mile away has a battery tester and is pretty good with diesels and he has offered to help me with this one.

 

[Diamondpilot]

OK.........thanks guys! I up to the task.....I will print these replys off today at work and proceed with surgery......I was really down in the dumps.....but you know sometimes you can't learn without a little turmoil or hardship in your life. In this case I probally did something stupid and now I must learn from my mistake. I just hope it's too expensive of a mistake.

PS.........my good friend that lives about a mile away has a battery tester and is pretty good with diesels and he has offered to help me with this one.

That was my next suggestion, phone a friend. Many times I look at a problem and can not figure it out then a buddy comes over and says hey whats this or that hanging off. It is something I had totally overlooked. Many times we get tunnel vision and will step over a dollar to pick up a nickle if you know what I mean.

Chris

 

[wcpeabody]

I also have a 770 so I am curious if you were able to resolve your problem?

Thanks,
Bill

 

[Whitey]

OK let me first say how thankful I am to all whom gave their advice. I really mean that for I do not know what I would do without this web site. I am not very knowledgeable at all when it comes to equipment but you guys have given me the desire and capabilities to try to repair things on my own. With that said the tractor is fixed! I started out by borrowing my friends battery tester (slick gotta find one or keep his) and tested the battery. Upon doing that I noted the battery cable clamp on the positive side a little loose. Upon trying to tighten I noticed it would not. Closer inspection revealed a crack in the clamp itself. Trip to town.....replaced clamp and tightened......tried the lights....and they worked!!!! Wow!.....stood there with the dash in one hand and the key in another and.......turned the key and over she went and started as she did the day I bought her! WOW!! Now I cannot tell you what made that pow sound behind the key the day she died.....and I am not asking questions but I buttoned her back up and she has had no signs of any problems. I hooked the backhoe up and off we went. So here I sit with my tail between my legs telling you this and I must say it pays to start at the very beginning of the power source and check from there in and when all seems right......sometimes it is not. I should pay closer attention to what I preach.

 

[Diamondpilot]

Really glad you got it fixed and that it was fairly cheap. I am still curious what made the engine labor when you disconnected the BH? Either way its up and running. Good luck.

Chris

 

[zzvyb6]

Sometimes the cracked battery cable will spark and ignite hydrogen gas given off by the battery ventting during high current discharge. That means explode. In fact when this thread started I was reminded of the exact same situation on my tractor. From this I learned its also a good idea to have safety glasses on when looking at battery and cable issues. Just connecting up jumper cables can flash the gas and a sulphuric acid splash in you eyes will ruin your day.

Originally, I thought the pop might be the fuel shutoff relay noise, but a memory of my own starting problem came back from the past.

 

[RobS]

Good to hear you're back in the saddle!

 

[dqdave1]

I would suggest when you have time; replace the battery cable with a molded one. It seems the cables that are redone do not hold up well and the diesel needs all the current it can get. Just measure it and pick up aa new one. Make sure you get same guage one or heavier.

 

[kennyd]

I am still curious what made the engine labor when you disconnected the BH? Chris

Simple, the BH is connected to the Power Beyond loop that has constant flow through it, so when he un-coupled the QD's it sent the hydraulic system into relief because the flow was stopped.