New Holland T1520 Clunks When Trying to Start

   / New Holland T1520 Clunks When Trying to Start #1  

shoehorny

New member
Joined
Jun 10, 2009
Messages
20
Tractor
New Holland T1520
Howdy,

I have a 2010 New Holland T1520 with 420 hours on it. I was using it last week to move firewood. It performed like a champ! Unfortunately, I ran low on diesel fuel, so I added some diesel from a tank I use to heat up my workshop. This diesel was old and had sediment in it. Nevertheless, the tractor started up fine and I was able to continue my work. All of a sudden, it started to bog down, made some rumbling noises inside the engine, and it stalled and it would not restart. I let it set for an hour or so, then came back and started it up again. It started fine, but the rumbling noises continued, so I drove it straight to my workshop. Just as I got to the workshop, it stalled again.

I removed the fuel bowl, which was filled with sediment, and drained the fuel from the tank. I flushed the tank out with some fresh diesel, cleaned off the filter and bowl, and put it back on the tractor. I bled the air out of the tractor and then tried starting it again. When I turned the key all I heard was a click and then clunk sound. I popped the hood, removed the side panels, and tried turning the cooling fan by hand. It was totally seized up!

Next, I crawled under the tractor and got a wrench on the main pulley and tried rotating it back and forth. I got it to move a bit, and then some more. Then I went on top again to turn the fan by hand. It was moving a lot more freely. I turned the key on again and it tried to start this time, but after a second of turning I heard the clunk sound again. I went back under the tractor and tried turning the engine pulley again but this time it was seized stuck.

The battery is good. It is completely charged up. I did change the motor oil and filter. This tractor has the hydrostatic drive on it (which is awesome!). I'm stumped. Any ideas?
 
   / New Holland T1520 Clunks When Trying to Start
  • Thread Starter
#2  
I found out the answer late this afternoon. I was going to take the starter out to check if it was causing the flywheel to jamb up. While looking over the starter I found a piece of cast metal that came from the lower engine block. Right behind the starter was a two inch sized hole with a rod sticking through it. Time for a new tractor....
 

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