North Idaho Wolfman
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L3250 Injector Related Issues
- Thread starter J03bota
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He did... see post #33Remind me, did you take compression readings before you started?
It's been an interesting read this morning.
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Thank you conropl,
I had to go back and look and I wrote it
Compression readings we're about 330 psi cold engine on all 4. It was about 25 degrees on that day.
The spec shows 412-469 psi
They don't seem to be that bad but the tractor puffs Blue Smoke and drips what I now know is oil out of the exhaust on 3 ports
I had to go back and look and I wrote it
Compression readings we're about 330 psi cold engine on all 4. It was about 25 degrees on that day.
The spec shows 412-469 psi
They don't seem to be that bad but the tractor puffs Blue Smoke and drips what I now know is oil out of the exhaust on 3 ports
North Idaho Wolfman
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Yea 330 is bad.
Spec the cylinders for excesive wear, if not re-ring , and hone.
If it's over either bore and go .5mm over pistons and rings or resleeve, new pistons and rings.
And have the head completely rebuilt.
Then before you do anything remove all of the air cleaner setup and triple check every part, as it sounds like you have dusted the motor.
Spec the cylinders for excesive wear, if not re-ring , and hone.
If it's over either bore and go .5mm over pistons and rings or resleeve, new pistons and rings.
And have the head completely rebuilt.
Then before you do anything remove all of the air cleaner setup and triple check every part, as it sounds like you have dusted the motor.
Okay N.I.Wolfman, thank you for the update.
Stupid question did the engine come with sleeves when it was brand new or we're the sleeves added at some point
Thanks again
Stupid question did the engine come with sleeves when it was brand new or we're the sleeves added at some point
Thanks again
North Idaho Wolfman
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Hi guys, performed all the cylinder liner bore measurements yesterday
Cannot find the out of round, warpage and taper specifications in my L3250 workshop manual. Looked everywhere
Thank you..
Cannot find the out of round, warpage and taper specifications in my L3250 workshop manual. Looked everywhere
Thank you..
85Hokie
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This is for the V1902DI-AE
Cylinder Liner ID (RV): 3.346
Cylinder Liner ID (AL): 3.352
Piston Diameter: 3.343
other pertinent info:
Valve Clearance (Cold): 0.008
Piston Ring End Gap (RV): 0.024
Piston Ring End Gap (AL): 0.06
Main Crank Journal (Front): 2.0441
Main Crank Journal (Center): 2.0441
Main Crank Journal (Rear): 2.0441
Rod Journals (Standard): 1.8487
Crankshaft End Play: 0.012
Front Pulley Nut Torque: 130
Thank you for the specs but I still need the Cylinder Liner out of round, warpage and taper tolerance specifications on the V1902-DIA.
Last edited:
North Idaho Wolfman
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He did give you the info:
Cylinder Liner ID (RV): 3.346
Cylinder Liner ID (AL): 3.352
Piston Diameter: 3.343
Liner out of round will be any dimension where the sides vary.
Warpage will be will be a variance in the taper from top to bottom.
Taper tolerance will be where the RV at AL change at a greater rate than spec.
Oh, I expected an out of round tolerance limit of something like 0.001?? Max Warpage 0.002 and MaxTaper 0.008 or 0.009.
Those numbers are similar (lower) to a Ford Ranger with a 3.779" bore size.
There has to be some allowable limit right?? Nothing is perfect??
Also, what does RV stand for? Looks like RV represents the minimum factory specification wear dimension?
My factory spec wear range = 3.34646 to 3.34732.
My allowable limit is 3.3532
Thank you
Those numbers are similar (lower) to a Ford Ranger with a 3.779" bore size.
There has to be some allowable limit right?? Nothing is perfect??
Also, what does RV stand for? Looks like RV represents the minimum factory specification wear dimension?
My factory spec wear range = 3.34646 to 3.34732.
My allowable limit is 3.3532
Thank you
North Idaho Wolfman
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Kubota does not give those specs.
This is the only tolerance specs they give on cylinder bore.
There motors are not know for having warpage or out of round issues.
This is the only tolerance specs they give on cylinder bore.
There motors are not know for having warpage or out of round issues.
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Hi guys, I purchased a cylinder liner/sleeve removal tool (for V1902DI) with puck dimensions to fit the 85X88.5mm sleeve. Results: sleeves wont budge?
I believe that the outer dimension of the sleeve is 88.5mm but I'm not 100 % sure.
Tried some heat but so far no success.
Tried trimming the puck's outer dimension down to about 87mm to make sure I am only pulling on the sleeve. Still nothing.
Tried to use a screwdriver to catch the edge of the liner on the deck side but there is no seam on any of the 4 liners? All I see is a very faint discoloration of what could be the liner but no seam.
Is this normal ?? Shouldn't I be able to see a seam?
Also, does anybody know what the outer sleeve dimension is?
thank you
I believe that the outer dimension of the sleeve is 88.5mm but I'm not 100 % sure.
Tried some heat but so far no success.
Tried trimming the puck's outer dimension down to about 87mm to make sure I am only pulling on the sleeve. Still nothing.
Tried to use a screwdriver to catch the edge of the liner on the deck side but there is no seam on any of the 4 liners? All I see is a very faint discoloration of what could be the liner but no seam.
Is this normal ?? Shouldn't I be able to see a seam?
Also, does anybody know what the outer sleeve dimension is?
thank you
Just wanting to confirm that the puck is being pulled by a screw using a nut to apply pressure with the puck against the sleeve.
Then you tighten the nut and nothing happens. You may need to apply a mechanical impulse (hammer rap) to overcome the initial friction. So turn a little, rap a little, until the sleeve frees up and keeps moving.
Make sense?
Then you tighten the nut and nothing happens. You may need to apply a mechanical impulse (hammer rap) to overcome the initial friction. So turn a little, rap a little, until the sleeve frees up and keeps moving.
Make sense?
Hi Jim, thank you.
Yes that is exactly the kind of puller that I have.
I have been banging on the puller frame and nut just to generate some vibration but obviously its not enough. I could try wacking at the puck from the bottom using a pipe fed between the crank shaft.
In addition I could also try using a lot more heat. I have a very powerful heat gun or I can use propane?
Yes that is exactly the kind of puller that I have.
I have been banging on the puller frame and nut just to generate some vibration but obviously its not enough. I could try wacking at the puck from the bottom using a pipe fed between the crank shaft.
In addition I could also try using a lot more heat. I have a very powerful heat gun or I can use propane?
North Idaho Wolfman
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Why don't you give us the best pictures top and bottom that you can of the clyinders as some V1902 do not have liners.
And you do not want heat, you want cold, you need to shrink the liners not expand them, I pack mine in dry ice to install them, would be the same for removal!
And you do not want heat, you want cold, you need to shrink the liners not expand them, I pack mine in dry ice to install them, would be the same for removal!
Hello
Wolf Man is right. The first thing to do is be sure you have sleeves. I have never had any luck pulling sleeves in a Kubota engine. The sleeves will need to be bored after installation so I always have the machine shop remove them.They set up there boring bar offset to one side and bore the old sleeves out and then peal it out.
Good Luck Lance
Wolf Man is right. The first thing to do is be sure you have sleeves. I have never had any luck pulling sleeves in a Kubota engine. The sleeves will need to be bored after installation so I always have the machine shop remove them.They set up there boring bar offset to one side and bore the old sleeves out and then peal it out.
Good Luck Lance
What? Ouch,
Well if that's the case then I just ruined one of my cylinders by cutting into it looking for the liner edge that doesn't seem to be there.
Okay I'll get some closeup pictures.
Thank you North Idaho Wolfman.
Well if that's the case then I just ruined one of my cylinders by cutting into it looking for the liner edge that doesn't seem to be there.
Okay I'll get some closeup pictures.
Thank you North Idaho Wolfman.
Hi 007kubotaguy,
I didn't know that. Are you sure?? I thought a semi-finished sleeve only needed to be honed???
thank you.
I didn't know that. Are you sure?? I thought a semi-finished sleeve only needed to be honed???
thank you.
North Idaho Wolfman
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No sorry like 007kubotaguy said, the block will need to honed or bored to except the sleeves, and then they will need to be bored and honed to spec to except the pistons.
I take it you bought sleeves from Kumar Bros?
I take it you bought sleeves from Kumar Bros?