Machinery Student Cock Up!

Frank-the-Wool

Member
Livestock Farmer
Location
East Sussex
I have an average intelligence Machinery Student from the local Ag college.

I asked if he knew how to change the oil and filters on a Yamaha quad. Oh yes we have done oil filter changes at college.
So I left him to do it at his leisure.

Well he drained the oil and changed the filter, but then managed to cross thread the sump plug and has now stripped the thread in the sump housing!!!!

Anyone have any suggestion on how to fix this other than a new casting?
At present he is very seriously in the Dog house and has been put to work shovelling sh1t!
 
I have an average intelligence Machinery Student from the local Ag college.

I asked if he knew how to change the oil and filters on a Yamaha quad. Oh yes we have done oil filter changes at college.
So I left him to do it at his leisure.

Well he drained the oil and changed the filter, but then managed to cross thread the sump plug and has now stripped the thread in the sump housing!!!!

Anyone have any suggestion on how to fix this other than a new casting?
At present he is very seriously in the Dog house and has been put to work shovelling sh1t!
Next size up sump plug and re-tap the hole …?

All part of the learning curve ….🥴🤯

But I’ll guess that the sh1t needed shovelling anyways…🤣
 

DrDunc

Member
Livestock Farmer
Location
Dunsyre
I have an average intelligence Machinery Student from the local Ag college.

I asked if he knew how to change the oil and filters on a Yamaha quad. Oh yes we have done oil filter changes at college.
So I left him to do it at his leisure.

Well he drained the oil and changed the filter, but then managed to cross thread the sump plug and has now stripped the thread in the sump housing!!!!

Anyone have any suggestion on how to fix this other than a new casting?
At present he is very seriously in the Dog house and has been put to work shovelling sh1t!
Aye now then, what he really meant to say was a highly renumerated "tutor" ran through the process in front of him, and that he'd really like the opportunity to learn to do it......

Helicoil is the simple, cheap, easy to install answer.

You'll need the next size up from the existing sump plug bolt. Careful drill out crossed thread hole and inserter the helicoil, pour through some engine flush, and fit the new bolt and copper washer

Once the shyte has been shovelled, watch YouTube with the obviously keen but utterly inept youngster, source the bits and let them join in fixing the sump.

He'll have for life good memories of you taking the time to teach, and you'll have his unending gratitude arisen from the ashes of his fu3k up
 

Ffermer Bach

Member
Livestock Farmer
I have never used one, but I would be inclined to try something like this

 

Ffermer Bach

Member
Livestock Farmer
Aye now then, what he really meant to say was a highly renumerated "tutor" ran through the process in front of him, and that he'd really like the opportunity to learn to do it......

Helicoil is the simple, cheap, easy to install answer.

You'll need the next size up from the existing sump plug bolt. Careful drill out crossed thread hole and inserter the helicoil, pour through some engine flush, and fit the new bolt and copper washer

Once the shyte has been shovelled, watch YouTube with the obviously keen but utterly inept youngster, source the bits and let them join in fixing the sump.

He'll have for life good memories of you taking the time to teach, and you'll have his unending gratitude arisen from the ashes of his fu3k up
I may be inclined to pull the sump off to do it, then refit the sump, as I would be worried about leaving swarf in the sump.
 

Cowabunga

Member
Location
Ceredigion,Wales
Next size up sump plug and re-tap the hole …?
In his skull with a blunt chisel.

I’m afraid that much of the ‘talent’ that comes out from certain institutions is of this standard. Ask him to name the five events of the Otto Cycle as a basic test of knowledge which I learnt for myself at about 11 years of age. Don’t be surprised if all you get is an open-mouthed blank stare.
 

DrDunc

Member
Livestock Farmer
Location
Dunsyre
I may be inclined to pull the sump off to do it, then refit the sump, as I would be worried about leaving swarf in the sump.
Aye that's the proper way. Pouring a bottle of engine flush through is the proper farmer technique though 🤣

Please get the lad involved with fixing their mistake? It's a tremendous boost and encouragement to someone if they're keen to learn
 

Ffermer Bach

Member
Livestock Farmer
I get told by my son, when I say to him, didn't you......... before you did...... He always replies, well Dad, you didn't tell to do that first. Of course I know he is right.

The tutor who showed them in college, should have said place the drain plug in place, putting upward pressure on, turn it anti clockwise until you feel it click as you get to the start of the thread, then start to spin it on by hand, feeling the thread is running freely before you use the ratchet and wallop it up (and tight enough but not two grunts tight as you will strip the thread).
 
I get told by my son, when I say to him, didn't you......... before you did...... He always replies, well Dad, you didn't tell to do that first. Of course I know he is right.

The tutor who showed them in college, should have said place the drain plug in place, putting upward pressure on, turn it anti clockwise until you feel it click as you get to the start of the thread, then start to spin it on by hand, feeling the thread is running freely before you use the ratchet and wallop it up (and tight enough but not two grunts tight as you will strip the thread).
And always recommended to use a new or freshly annealed copper washer.
 

DrDunc

Member
Livestock Farmer
Location
Dunsyre
In his skull with a blunt chisel.

I’m afraid that much of the ‘talent’ that comes out from certain institutions is of this standard. Ask him to name the five events of the Otto Cycle as a basic test of knowledge which I learnt for myself at about 11 years of age. Don’t be surprised if all you get is an open-mouthed blank stare.
Aye, despite a PhD in engineering, a more than fair grasp of the intricacies that cycle thermodynamically, and sharing your view upon the efficacy of modern day college tutors, if you'd asked me the same question about the internal combustion engine cycle, you'd likely be told to shove the sump plug up your supercilious ar$e
 

Cowabunga

Member
Location
Ceredigion,Wales
Aye, despite a PhD in engineering, a more than fair grasp of the intricacies that cycle thermodynamically, and sharing your view upon the efficacy of modern day college tutors, if you'd asked me the same question about the internal combustion engine cycle, you'd likely be told to shove the sump plug up your supercilious ar$e
No doubt. The ignorant and unintelligent might tend to behave that way. They know no other. Or they might well be unemployable in some cases, as you illustrate above.
These are people that attend agricultural ‘engineering' courses we are taking about, not knitting classes. Even so, a person attending a knitting college would be expected to know the basics of knitting.
 
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roscoe erf

Member
Livestock Farmer
In his skull with a blunt chisel.

I’m afraid that much of the ‘talent’ that comes out from certain institutions is of this standard. Ask him to name the five events of the Otto Cycle as a basic test of knowledge which I learnt for myself at about 11 years of age. Don’t be surprised if all you get is an open-mouthed blank stare.
wasn't he a clown in smiths circus fell off a high wire on his cycle hell of a death now known in the circus world as an Otto cycle
 

Cowabunga

Member
Location
Ceredigion,Wales
Don’t he too hard on him ffs everyone makes mistakes and your a barsteward of you punish him too harshly for it
If he’s any good he will be totally embarrassed by his mistake. It may well be the making of him. Or not, depending on his ability spectrum and attitude. No point giving him a row, because he knows what happened and either cares and will learn, or not, regardless.
With a lack of experience with fasteners and materials, he should have been taught to tighten to the specified torque using a torque wrench. This is seldom available on farms of course. Thank goodness it wasn’t the spark plug thread he stripped or stretched.
 

Netherfield

Member
Location
West Yorkshire
Don’t he too hard on him ffs everyone makes mistakes and your a barsteward of you punish him too harshly for it
But wait until the sh1t shovelling is finished.
kero surely rather than flush.
then strain it through a sock back into the heating oil tank.
Pair of the wife's tights may be better, as long as you don't tell her what you did with them.

Give him credit if he admitted to his mistake.
 

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