bill from massachusetts
New User
I have a 1956 IT 300 utility that needs a valve adjustment. I know the gap is 0.017 hot and firing is 1-3-4-2,and that you start on tdc.After that iam not sure.
- Thread starter bill from massachusetts
- Start date
Zachary Hoyt
Well-known Member
It sounds like you have all of the numbers, what is it that you need to know?
Zach
Zach
Janicholson
Well-known Member
I do it this way others do a different system. It must be set cold first, so setting it twice (or once) is normal
Set the intake valve on cylinder #1 (Front) when its exhaust valve just starts to open.
Set the intake when the exhaust just closes.
This is the two positions that can be seen on each cylinder to be as far away from a lobe on the cam as possible while still knowing where it is.
The order is (front to back EI-IE-EI-IE-EI-IE)
Look at #1 valves, Turn the engine till the intake just starts to begin opening (moves) then adjust the exhaust valve. Rotate more until the exhaust just closes (just stops moving after having been open) and adjust the intake. Treat every cylinder (pair of valves shown above the same way, remembering they switch places between cylinders) I put a rag over the ones I have done to keep track of progress, and avoid mixing what I am looking at. Jim
Set the intake valve on cylinder #1 (Front) when its exhaust valve just starts to open.
Set the intake when the exhaust just closes.
This is the two positions that can be seen on each cylinder to be as far away from a lobe on the cam as possible while still knowing where it is.
The order is (front to back EI-IE-EI-IE-EI-IE)
Look at #1 valves, Turn the engine till the intake just starts to begin opening (moves) then adjust the exhaust valve. Rotate more until the exhaust just closes (just stops moving after having been open) and adjust the intake. Treat every cylinder (pair of valves shown above the same way, remembering they switch places between cylinders) I put a rag over the ones I have done to keep track of progress, and avoid mixing what I am looking at. Jim
CoopertownBob
Member
The 300 U is only a four banger!
The other way to do it is to find TDC on number one, set both valves, then rotate the engine 180 degrees, set the both valves on the next cylinder in the firing order, that is number 3, then rotate 180, set both valves on number 4, then 180 once more and set both on number 2. This method is easiest if you have a hand crank to turn the engine with. If the engine will run, warm it up before the first try, then re-warm engine and check all valves again. You might be surprised how far off a few will be after setting them the first time!
teddy52food.
New User
Jim, I don"t agree with your method as when the ex just closes the in is not on the base of the cam but ready to open. I turn it over till the ex just closes on #1 then set both valves on the running mate which is #4. Continue with the fireing 1342 order.
CoopertownBob
Member
I just caught this, and I know you just typed it wrong accidentally, but I want to clarify for anyone reading who doesn't know the difference.
You set the intake valve when the exhaust valve on the same cylinder is just beginning to open, and you set the exhaust valve on said cylinder when the intake just fished closing. If you set the intake after the exhaust just closed, you will be in the overlap section of the cam and your intake will not be anywhere close to correct.
Janicholson
Well-known Member
I do it this way others do a different system. It must be set cold first, so setting it twice (or once) is normal
Set the intake valve on cylinder #1 (Front) when its exhaust valve just starts to open.
Set the exhaust when the intake just closes.
This is the two positions that can be seen on each cylinder to be as far away from a lobe on the cam as possible while still knowing where it is.
The order is (front to back EI-IE-EI-IE)
Look at #1 valves, Turn the engine till the Exhaust just starts to begin opening (moves) then adjust the Intake valve. Rotate more until the intake just stops moving after having been open) and adjust the exhaust. Treat every cylinder (pair of valves shown above the same way, remembering they switch places between cylinders) I put a rag over the ones I have done to keep track of progress, and avoid mixing what I am looking at. Jim
Set the intake valve on cylinder #1 (Front) when its exhaust valve just starts to open.
Set the exhaust when the intake just closes.
This is the two positions that can be seen on each cylinder to be as far away from a lobe on the cam as possible while still knowing where it is.
The order is (front to back EI-IE-EI-IE)
Look at #1 valves, Turn the engine till the Exhaust just starts to begin opening (moves) then adjust the Intake valve. Rotate more until the intake just stops moving after having been open) and adjust the exhaust. Treat every cylinder (pair of valves shown above the same way, remembering they switch places between cylinders) I put a rag over the ones I have done to keep track of progress, and avoid mixing what I am looking at. Jim
Anonymous-0
Well-known Member
THANKS EVERYBODY FOR YOUR INFOR ON VALVE ADJUSTMENT YOU GUYS.THIS TRACTOR FORUM AND PEOPLE THAT GIVE YOU THERE KNOWLEDGE AND TIME.
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