Rtv900 help!!

muleman said:
When you had the head off did you crank the motor over? I have never tore mine down but you could have a twisted crank where it is actually 2 pieces or you have the cam shaft gears 180 out. I believe they use gears and not a belt. Would have to look at a parts book to know for sure. Now you have me thinking about this.
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Got me scratching my head also .....
 

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When I had the head off the motor I put a straight edge across the top of the block, each piston came the same distance up. So can't be a twisted crank. I have a book now. Yes it is all gears for timing. That is the only thing that strays me away from timing. Would thinks its pretty hard for the gears to skip. But then again what else could it be? Ya know. Being that the intake and exhaust is doing the exact opposite of what it is suppose to do. Hopefully I will get it pulled here in the next couple of days. And will get to pull the gear case cover. I will keep u all updated! One of those things I got it for free so I could just call it quits but now that it has challenged me I have to figure it out. Hate when that happens! Haha
 
Troop said:
Being that the intake and exhaust is doing the exact opposite of what it is suppose to do.
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THIS IS JUST MY OPINION, I AM NOT A PROFESSIONAL !!!!
It could be a timing. And I've heard of blown head gaskets making
one act like you desribed. BUT,
I swear this sounds like a valve problem.
Also, If there is a bent or burnt intake valve. Then this will cause the air to come out the intake side on the compression stroke. You should have what is called a cylinder leak down test done to the engine. This will tell if the intake, exhaust or piston rings or all ok or the percentage of leaks from the bad cylinders and which part is leaking. A simple compression test will tell you which ones are bad, good or Ugly.
Even with one cylinder with bad valves. They will over-ride the others working properly ....

Again, this is just my opinion !!!!

............ two guns
 

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I agree with two guns, do the leak down test and compression check just to rule out the pistons, rings, cylinders, valves, etc. You know your original issue was with some valves, rule out the other pieces up top, your already there. If you can't keep enough compression it won't run.
 
I may be new to all of this diesel stuff; but for me, if one has an engine torn down already to expose the pistons with the head off and the valves kinda easy to depress to actually SEE how they seat, wouldn't it be just as worthwhile to just take off the pan, expose the timing gear, plastiguage the bearings, rod & main, check the ring end gap, then put it back together making sure the timing is correct????

He already has the head off and pretty much torn down. To put it back together to perform a leak down and compression test is a bit to late???????...........With all due respect as diesels are something this ol shop teacher is not to familiar with; but the concept applies to the 4 stroker gas engines that I kinda know about.......God bless........Dennis
 
This is not my rodeo.
All we can do is try to help guide him for what he is telling us. :respect:
But if it was mine. I would have just rebuilt the engine.
That way, I know what I've got. But then again, that is just me !!!

You going into the engine anyway.
While your there, go ahead rebuild.


........... jamie
 
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A rebuild is the most likely thing that is going to be happening. But I am not the type of guy that can tear into something that's failed and just rebuild everything and not know what made it fail and why. I'm sure there are more of u out there like that. But yes I have the motor out and gear cover off. So this is what I found. The timing gears all look good. Nothing that would jump out at you and say that's why my timing is off! I put the flywheel that has a the mark 1tc ( number one cylinder top center I'm sure) and lined it up with the mark on the engine block. Now I woul assume that with that lined up all the marks on my timing gears should be lined up correct? Well if that is correct than its more than 90 degrees off. But no missing teeth on anything no bad wear no bad scrapes nix anything. The keyways looked to be good but I will be looking at it more in depth tomorrow. Anyone have any ideas now? I'm stumped ( but will figure it out!)
 
When you have the flywheel marks lined up with the one on the block and the timing gear marks lined up with the cam and crankshaft, what are the valves/rocker arms doing on #1 cylinder?...........All those marks should be lined up and at the piston at TDC. Keep going BUD......YOU are doing great......God bless......Dennis
 
So here is what I found. Upon trying to pull the cam out of the block it was very hard. Finally got the cam about 1/3 of the way out and stuck again. After looking through the holes where your lifters sit I could see the second and third cam bearings were toast! Pitted and scared. Could tell it got very hot! And it will not come any further out. So I called the dealer and talked to their lead mechanic. His opinion was that obviously the bearings were toast and had welded itself and bent. Hence the bend rods and it locking up. He said find a new motor. So there it is. So opinions on what to do next would be appreciated. Buy a new motor. Find a used one. Say screw it being it was free. Thanks. Sad day.
 
There were 6000 is that the hour meter said. I finally talked to the guy that was driving it again and it was ran dry on oil also. So I'm sure that's why the cam went belly up. Anyone have any used engines laying around?
 
Troop said:
I finally talked to the guy that was driving it again and it was ran dry on oil also. QUOTE]

Now I'm getting second thoughts. We getting to know the whole story.
Wonder if they even checked or changed the fluid in the tranny. I would hate for you to get a engine, then tranny go flop.

If they let this machine run dry on oil. No telling what they neglected on other
parts of the RTV.

I'm seeing the hours ( 6000 ), and hearing the WHOLE story on the RTV.
You have really have nothing in the machine. In a previous post, you said they gave you the RTV.

HERE AGAIN, THIS IS JUST MY OPINION......
It sounds like your fixing to sink a bunch of cash into something that is
wore smooth out, with a burned up, locked up engine, and a total of 6000 hours machine. And then, you still got nothing. Never again will that machine be
totally dependable, and will be a money pit from hell ...... from this day forward.
NOW,
IF THIS WAS ME, AND I WANTED A RTV.....
Kubota has them right now for 0% down, 0% APR for 48 months until the end of this month. Financing will be by what I've seen, about $20.83 per $1000.
Use their money to finace your Kubota. Enjoy life and live it up with a RTV you
can use, not spend your money on just to keep it going.
What your looking at is, A rebuilt engine, by the time you get it to you, just the engine alone will be in the area of $3,000 plus .... And then lets talk about everything else. What if the tranny goes bad. Axles, electrical, etc... etc .... etc.... .... The money will be just flowing out, and you still will not be having a dependable macine.

Sorry, but I can't see throwing that much money on a 6000 hr, locked up
RTV.......

You can sell parts off the old machine and help pay for your new machine.
With All that money your spending on a old locked up unit, take that cash and put a good down payment on a new one, and get your notes down to
a bare minimum....
OR, find you a good used unit .... There was one sold sixty miles from here, 410 hours, four year old unit, $6,000.... Was a good clean machine.

........... two guns
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Troop said:
Not to sure on hours as the hour meter is not working.
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Troop said:
There were 6000 is that the hour meter said.
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Oops. You didn't mention early on that the meter had 6000 before it quit working.

Properly maintained, that RTV would still be good (bordercollie put 4000+ on the RTV before selling and it was still in great shape). With 6000+ hours, engine shot and who knows what else due to lack of maintenance, I think I'm moving towards Two Guns train of thought that you may be getting into a money pit situation. I'd consider parting it out or using as a trade for something else.
 
After thinking about it lastnight and today I think I will be going that route. And you are right with it having 6000 hrs on after the meter quit working who knows how many are on it. And if the tranny does flop it would not be a good situation. And if they let it run dry on oil who knows if the fluids where ever changed in the tranny. My guess not. So with that said opinions on a new machine. What machine would be the best bang for the buck? Plowing in winter here in mn, getting to the deer stand, comfortable joy rides with the wife and kids? Also if anyone needs parts let me know! Thanks everyone for your help!
 
Since you're starting from scratch on which to get, they're all good. It's a matter of what you want and need.

Things to consider.
Cab is nice for heat and A/C. It's not good if you're constantly in-and-out of the machine (e.g. short trips for chores, having to manually turn or adjust the plow frequently...).
How many passengers? If you plan on regularly hauling more than 3 people, consider the 2-row seating.
Travel through lots of woods? Watch out for cabs and windshields.

Lots of things to consider for your particular use.

As for the existing machine, before parting it out, get an idea what the dealer would give you (if anything) for the one you have now.

If you are going to part it out, I'd start a thread here with what you have (with pictures). The first things I'd expect to go if they're in half-way decent shape are the tailgate & bed sides, front grill guard, hydraulics for the dump bed, fan/radiator and possibly some gauges. Basically the stuff that we all bang up. After that, you could say you'll strip parts if people give you enough to make it worth your while.
 
bczoom said:
Things to consider.
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I agree with bczoom !!! Things to consider.

Now we do much deer & hog hunting, deer management, food plot and just about everything you described as far as needs.

I have just the plain RTV without the cab air / and heat. Don't want doors on
the machine for I'm in and out of the RTV so much in the woods . Our Kubota RTV serves us VERY well and VERY proud I made that purchase. For we have added many extras on the machine. But the plain model was our choice for our
applications.
Any Kubota RTV will serve you well. It's just like any other vehicle. How much
do you want to spend and how nice you want it....

Remember, 0% financing stops at the end of this month ..... Don't wait until
the offer runs out. Go shopping !!!!

......... two guns :wave:
 
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