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Recent content by BMsuper
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Komatsu D31a-16
I can probably get more left tilt but at least I can get to work with this thing now. After the angle cylinder adjustments. That's my wife on the machine. Thanks Simon -
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Komatsu D31a-16
Simon, I tested the cylinders as you said and no oil is leaking by. I then followed the procedure to reduce the length of the angle cylinders by opening the large bolt (I didn't know that was a bleeder) and the two square head bleeder bolts on both angle cylinders. I tilted right and angled left... -
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Komatsu D31a-16
Simon, were you able to adjust your angle cylinder length using the bleeding procedure posted? I read that Plug 1 is actually a large bolt head (maybe 1 1/4") I didn't realize that was a bleeder. I was opening the small 1/4" square headed plugs. I'm going to try that procedure again today. -
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Komatsu D31a-16
OK, next fairly warm day I'm going to do the By Pass test Simon C recommended (above) and will try the bleed procedure again. This tilt problem is the only thing left to fix before I can use this machine. Been working on it for a month. I will post the results here. Thanks for all the info guys. -
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Komatsu D31a-16
Thanks for getting back to me. I believe all the components on this machine are original. Only 2900 hours on the clock. The major complaint is that the blade will not tilt left. The tilt cylinder travels full stroke in and out but because the tilt rod is pointing almost straight forward it will... -
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Komatsu D31a-16
Tinkerer, thanks for telling me how to add a video. I'm old and not in good health so I appreciate the advice. Just trying to get this machine working correctly so I can help my son out on his property. Bob -
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Komatsu D31a-16
OK, I added a video to you tube. I'll see if I can list it here. It shows the angle cylinders not retracting all the way. The blade is pitched forward not allowing the tilt rod to push the blade to the left. If the blade was held back by the angle cylinders it would push to the left. angle/tilt... -
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Komatsu D31a-16
Simon, The angle rams do seem to extend out all the way but do not retract all the way on either side. I wish I could post this video. The tilt cylinder works fine, travels both ways to the limit. I have no way to pressure test the cylinders. I think I can rebuild these angle cylinders fairly... -
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Komatsu D31a-16
OK, shot a video. It shows the angle cylinders do not retract all the way. They seem to extend all the way, left and right. You can see how the angle cylinders keep the blade pitched forward not allowing the angled tilt rod to tilt the blade to the left. I don't know how to adjust the angle... -
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Komatsu D31a-16
I'm going to take a video of the blade in motion so you can see what it does. That might explain what's happening. I appreciate everybody's help with this. Bob -
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Komatsu D31a-16
Thanks for getting back to me. The only way to set the blade forward angle is to adjust the length of the angle cylinders when they are straight (both evenly extended, blade straight). Newer machines have a straight bar from the C frame to the back of the blade that is adjustable. That keeps the... -
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Komatsu D31a-16
I haven't tried that but if the angle cylinders won't retract all the way I don't think that will affect their motion? I don't know. I can tell you, if the angle cylinders are disconnected from the blade and the blade is tilted back where I think it should be it will tilt left and right. I... -
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Komatsu D31a-16
1978 Komatsu D31A-16 Ser. # 25743 Yes, I am cleaning up the machine and used "Cub Cadet Yellow" for paint. These angle cylinders will not retract all the way. They stay out 6 to 8" on both sides. The opposite side does extend out all the way. It pushes the blade forward instead of holding the...