Repairing CAT D4 clutch fork.
ฝัง
- เผยแพร่เมื่อ 2 ธ.ค. 2023
- / snowball_engineering
In this video I repair a Cat D4 clutch fork.
One of the main pivot bolts had badly worn threads and also the threaded insert in the fork itself was worn out/broken out.
A new bolt was machined in the lathe from EN8 40mm bright round bar. The first threading attempt didn’t go to plan but the second try came out good.
The newly threaded part was then taken out of the lathe and mounted in the indexing head on the milling machine, after a quick crash course teaching myself how to actually use the indexing head, the hex for the bolt head was cut.
Next, the threaded insert was made. Same process in the lathe except internal threading.
The Bolt then had a hole drilled through the head then was parted off in the lathe.
The hole in the fork where the insert goes was cleaned up and chamfered with the die grinder, the insert was then TIG welded back in. The insert on the opposite side was also loose, so that was knocked out and cleaned up and rewelded back in.
Hope you enjoyed the video.
Thanks for watching! - วิทยาศาสตร์และเทคโนโลยี
Check out Pacific Northwest Hillbilly channel for his CAT D4-7U videos if you want to know the purpose of this part: th-cam.com/video/b0wGs-bO13M/w-d-xo.htmlsi=yPx7KgVxUsJtZeym Make sure you drop a comment saying how you got there 😉
Done
There's also disassembly
th-cam.com/video/FGHjgc8xmYU/w-d-xo.html
And some more explanation
th-cam.com/video/IV3ur6_NgMI/w-d-xo.html
yep makes sence now lol
Thanks for the shoutout, nice channel you got here! 🍻
I love his channel. i followed the build from the start. Matt is a sharp fellow. And so are you my friend! I love the video's. Keep them coming!
Please don't underestimate the value of all your videos. They are all enjoyable to watch and you sre a very detailed and patient teacher. Keep it up
To us who find any fabrication to be fascinating, this job wasn't close to boring. Making things of metal to function as a piece of machinery makes for good entertainment.
You say “it’s not the most interesting of jobs” and yet it was just as engaging to watch you rescue an ancient component, solving problems along the way, and keep a piece of kit operational, as is to watch you build from scratch.
Am in awe, working out the thread cutting on the lathe was bad enough, but working out how to cut the bolt head was a whole different level. 👍
When guys like you do not show your mistakes, it is just a "movie" and not a "lesson" for us to learn by.
Another nice repair video. I like your repair of broken items or equipment videos. I also like that you share your mistakes while fixing/making items. No one watching this video has not made a mistake or 100 and learned from it. Keep up the good work.
10 out of 10 for working out the dividing head. It’s not simple when you have never used one before. 😊
Nothing but admiration for your perseverance, logic and can-do or will-learn attitude!
That WAS very interesting and a very well done repair carried out in a very cold workshop! Brilliant! Threading on a lathe gets easier the more of it you do! You have got it! Just keep refining the technique! Have confidence, you are a lot better than you give yourself credit for.
Phil, East Yorkshire
Oliver, set your compound to 30 or 29.5 degrees and in feed with compound for thread cutting. Use cross slide to just pull out and return to zero for next cut. It'll help get rid of your jagged cut thread. I enjoy your videos!
Good video, I admire your honesty. You could have edited the mistake out and nobody would know.
Like all trades there's always an extra piece of tooling you could do with ! Thanks for sharing your work.
Back in my boat building days, an adze was the fellow to get the heat up. We used to feel sorry for those poor welders who would carry around a piece of styrofoam to put between their backsides and the cold steel. Thanks for posting.
Cutting threads here in North America, we have to do the exact opposite as out machines are SAE based. So when we do metric threads we have to keep the half nuts engaged and reverse the tool out. For a guy that claims limited machining skills, you did pretty darn well.
I enjoy following your channel because the "uninteresting" things are something I haven seen before, how you prepair the items all goes to make your work a good watch.
It went wrong because you have a metric lead screw. You need to keep it engaged. When cutting larger threads, it is good to set the compound to half (or just over) the angle of the thread so if it is a 55 degree thread, set it to 27.5 degrees then feed from the compound. That will make sure that almost all if not all the cut is done on 1 side of the tool and you will get a much cleaner thread. Obviously with a metric thread, set it to 30.
Thanks for the video, I think I have worked through nearly all of them in the last two weeks after finding you channel!
Hi Oliver, As mentioned ref metric lead screw. The chasing dial gears are only compatible with a range of metric thread pitches. You can disengage the lead screw and move the carriage back but you have to wait for the dial to re-align with one set mark and not more than one revolution but best to leave it engaged.
I would also wind your compound slide back to reduce the overhang, lock it and thus increase the rigidity.
Another option it to machine a step on the face which equates to the minor dia and so when the tool touches you know you are at the correct depth. The machine the face to remove.
Andy
A wood burning stove build for the shop would be a great series to watch!
Need some roof insulation to keep the heat in 🥶
@@snowballengineering One piece at a time!
Sunday treat again
It is real craftsmanship that you show.
And it is real, with errors and all.
You are real and honest.
Hope your name snowball will also roll and give us some nice videos.
stay safe and healthy.
Another great video and was most welcome after CEE didn't post this week. On lathes with a metric lead screw (my old chipmaster), reversing is the only method as the thread gauge wont work. To be fair, it's the best method anyway.
You may find that your dividing head has some short cuts on the rear for doing popular numbers like 6.
Just check the tool height on that threading insert of yours. If it's a fraction high it'll rub and produce a furry thread. I did exactly the same this week. Your furry thread could have been caused by that, or spinning in the chuck, or getting pushed into the chuck but looking at the thread dial you might have missed the mark when you engaged the half nut.
The cutting rpm could do with being a little faster for carbide too. You had a relief cut so you had time to stop and reverse the motor.
One final thing, if you are using the AG inserts you'll have to go a tad deeper as they aren't a full form (i.e. made specifically for a 14 tpi thread), and they come to a point.The correct depth is for standardisation but in this case it didn't matter as you made both the nut and the bolt and they fit each other.
Thanks for making the video.
Whoever puts that back together will be happy with that repair. Good job, hope you have a warmer week !
Every day is a school day. Thank you for your content. Love it!
Another great video & fix Olly. Another showcase of your limitless skills and willingness to support your customer base
Unless you are really well versed at cutting threads on a lathe, my top tip is always start with cutting the threads on the job, before you cut away any other material, I do a lot of model engineering with many different thread sizes, BA, ME, BSP, MM & the amount of times i’ve seen a part almost finished to then be ruined when cutting the threads ! It’s soul destroying to say the least, especially when you scrap the only bit of material you had to hand.
In this particular case, you could have chosen any suitable thread pitch as you were making both parts.
This morning, along with my SE video, I have an Americano coffee and a croissant. Another relaxing Sunday morning. Good morning to all other SE viewers.
Oliver, Good morning... Kurtis, in one of his earlier videos, mentioned the in and out of gear to reverse his lathe to make threads was what he was taught... I think he still does that... Sure saves from screwing them up...
I watched Matt's video on the D-4... Now I'm watching his rebuild of the excavator...
For not being a machinist, you can surely make stuff work very well... Dave
I have watched all of Kurtis' videos and to the best of my recollection he has always threaded by reversing the lathe. Unless you do single-point threading very routinely it is certainly the safest way.
@@BruceBoschek Kurtis definitely uses the “reverse lathe” technique. Saw him do it recently👍
Oliver as I have said before "YOUR VIDEOS ARE ABOUT REAL LIFE NEEDS NOT ABOUT SHOWING OFF YOUR SHOP EQUIPMENT OR ABOUT SOME OTHER BLAH! BLAH! BS" Interesting work, you having to cut imperial threads 😵💫😵💫🥴🥴😭😭😭Excellent work 👍👍👍. Thank you for sharing. Be safe 🇨🇦
Nice job done. I'm looking already to the Pacific Northwest Hillbilly channel for a long time. His D4 rebuild was also a nice job. I found your channel by the WWW channel. I'm also following thew CEE Australia channel. Although myself I, was 40 years active in IT maintenance, installation and the last 20 years in sales, I kept my interrest in technical stuff like trucks, wheelloaders, draglines and big V8 race cars. I worked on those in my younger (and wild) years. Now I'm already 4 years retired and maintain old Ex MOD Landrovers S1, S2, S3 and Austin Champ. I've bought myself 13 years ago a Landrover Ninety V8 to keep the feel of the normal mechanical stuff. It went from a rattling car to a smooth running one after rebuilding the transmission, Engine and coach repairs.
Your channel is interresting for technical guys and I like your approach of tackling problems. Keep up the good work.
Just amazing how handy you are. You must be an 80yr. Old machinist stuck in a young man's body.
You know so much. Carry on and we will await your next one!
There’s a lot I don’t know but learning along the way is what makes it so fun.
I was typing that answer about leaving it in gear as threading is what I have done the least of over the years. I did a left H tailstock nut and left it in gear as I was not brave enough lol
I’ve tried doing metric threads leaving it in gear and had the opposite result. Maybe it’s a metric lead screw? 🤷♂️
I have always left in gear and wound off the cut depth. to be honest I never knew about the dial to match up threads.
You say it wasn't very interesting but it is very interesting to me to see how you adapt to the different jobs at hand you are very well-versed in your skills keep up the good work 💪👍💯
I thought it was very interesting! I like seeing the different stiff you have to machine and fix. Nice one! 👊
CEE always uses the gearing when cutting threads so that’s the best recommendation of how to do it correctly.
That was interesting especially the math required to turn the flats . It turned out well
It’s an absolute pleasure to watch your video
Nice work. Thanks for taking the time to share it with us.
Best way to learn just get on and do it, customers in my opinion don’t realise just how long these ‘little’ jobs take, good job 👍
Great to see you problem solve as you go.
2:00 A perfect candidate for your engraver! You already have the photo, after all. ;)
I see you got on the nit hat, I started watching you last year and you had on your nit hat, boy time flies keep up the good work work.👍
This is a great channel and I love your work
Two points that may help your thread cutting
1. I have a Colchester Student with a metric leadscrew and you can not use the thread dial indicator to cut an imperial thread you must leave the lathe in gear all the time, I am guessing your Harrison is the same ?
2. It appears you are using the cross slide to advance the depth of cut on the thread, this will work of course but you will be cutting on both sides of the threading tool and it puts a lot of pressure on the tool and leaves a bad finish, its better if you use the top slide to advance and set it an angle and the tool only cuts on one side
There are a million videos on youtube on single point thread cutting that will help
Thank you once again for your excellent videos
Very often the case on imperial threads. It SHOULD line up but often doesn't.
Love your vids - keep 'em coming.
Great video! I have watched other videos where the machinists use a lathe to cut threads. I have never understood how they get the cutting tool to enter the cut in the exact same place after they back it out. NOW I understand fully, THANK YOU!
Glad it was helpful!
It is very interesting. You have a Knack with metals that most don't. I do enjoy your projects since I am getting to old to do myself,
Indexing is always a bit iffy on older machines-too many variables-- better to stop and reverse and keep engaged-- well done that man!! always good when spindle brake works well!
Always wonder how treads were figured and cut and how the dividing head worked. Thanks for explaining. Great video
Great video. You should have tried to repair the brass part with the TIG if the client wanted. It had a lot of wear on the top as you showed.
That is the best way to cut the threads leave the lathe locked in and back off and reverse my mate is a very good toolmaker always does his thread cutting without the dial indicator. Just leaves the lathe locked in he said you cannot go wrong. His thread dial is so dirty thats how i knew he didn't use it. Glad it worked out for you.❤😁..Did well with the dividing head clever boy worked the Oracle as my late father used to say.😂
we live and we learn. top little job there snow.👍
Why the heck don’t you have at least a wood stove once again I hope your channel blows up you deserve it
Quality job. Not a boring video at all, it’s a real life repair in the real world. It will be sound. All the best.
Your natural ability shines with this job. Enjoyed watching.Thanks!
I wouldn't complain Ollie. Your work is good for me. Im not a machinist by any means. Not im i perfect in my work. But ive managed to do with what i have. God bless Ollie
nice work there just goes to show we can all learn something new and be all the better for it showing your mistakes along the way shows how humble you are and not afraid to show us that no matter how good we are or think we are we all make mistakes well done on the thereding and all thanks for showing us the how to of it all Cheers
Another great video Olly, thanks. If we weren't interested we wouldn't be watching. Well done working out what looks like and ancient indexing head. Nice to see other channels I'm watching mentioned - Watch Wes & Pacific Northwest Hillbilly - just shows we're all tinkering all over the world. Although I'd put yourself and Wes in a different class, for sure. All the best, Ian
Nice one ! Bit different 👍.
Rest assured most of us would end up with 7 sided nuts or 3 ! 👍👍👍.
Those dividing heads are definitely from the Darkside 👍😁😁😁
found your channel just jumping around looking really enjoy it so far
Looks like someone needs to buy you some collet blocks for Christmas. Would make machining hexes & squares much easier.
Whatever collets you use most you should be able to find hex & square blocks. I’d say ER40 for your stuff.
I use mine a hell of a lot. Very handy for holding round stock in the mill vice.
Deine Arbeit ist echt Traumhaft anzuschauen😊 cool wäre deine fertige Arbeit in Aktion zu sehen, wo sie zum Einsatz kommt.
For someone who doesn't know certain things and/or never done before...... You definitely have many a man give you a firm pat on the shoulder mate. Well done. You got the knacks.
Awesome job Oliver, keep up the great work.
From kiwi land.
If my failing memory serves me right that thread is a 1" UNF, one of those threads that us dinosaurs used to use along with BSF, BSW, etc 😂😂. Well done mate, that bronze inner part will needs bushing soon. We've had so much rain coming down the mountain that it has washed down loads of stones which with the leaves totally blocks the drains so the road becomes a stream. The council do clear it but sometimes I'll clear so my wife doesn't have to get wet feet getting to the car. Take care 👍
GOOD JOB once again Olly 👍👍👍
Every job is a interesting job , they are all learning experiences for me especially. Cheers Andy Australia
Thank you for sharing, always a pleasure watch your project 👍👍👍👍
I wish I had the courage, at his age, to go into business for myself. Oliver is fearless in taking these jobs on. My only advice is to watch some of Abom79's threading videos from back when he did real work instead of infomercials.
That was a good piece of machining well done you are very talented ✔️✔️✔️✔️✔️
Another job well done, Oliver. Nice of you to give Matt a shout out!
I had the same problem threading on my new lathe just last week Ollie. I did the same as you in the end, left it in gear. Re not getting enough practise TIG welding, I always say "The only difference between the amateurs and the experts is practise, practise practise."
That part you repaired is definitely out of an old D4. I have had that same part out of my D4 a couple of times, not for repairs though, it has not needed it that one you have looks like it has had a very hard life. We are heading into summer here (half way between Sydney and Brisbane) and it has been in the 30s most days unless it has been overcast. Getting some good thunderstorms most afternoons. Cheers Mate.
On the contrary, it was very interesting. You do good work for what you have available
You did a great job with what you had to work with
It was very interested video deferment but is part of what you do Olly.
Another great video , and great job, Oliver!!👍👍
Comment for the algorithm to help the channel 👍.
Learning by doing, and doing it extremely well
Ah, I see you’ve used the big hammer method of effective engineering. Well done, love you thinking out loud on how to get the job done.
I used to call the big hammer the "Fine Adjustment Tool". Very effective!
Well, since I'm getting along in the years and am a bit sensitive I had to put on my arctic winter coat and gloves to watch you working, but it was well worth it. What a brilliant repair! Figuring out and successfully using the dividing head puts another feather in your hat! Nice one. Thanks for this very stimulating video, Oliver.
Every job you do is interesting. 😊
Normally, if your leadscrew is metric you can disengage the half nuts when cutting metric threads but not imperial threads.
Conversely if your leadscrew is imperial you can disengage the half nuts when cutting imperial threads but not metric threads.
That’ll be why then, I have a metric lead screw. Thanks for letting me know.
There is a method where you can disengage the half nuts if you need to, eg if you are working up to a tight shoulder.
You need to stop the lathe immediately (back out the compound of course).
Put the lathe in reverse and immediately re-engage the half nuts on the same number you started with on the thread dial.
So long as the thread dial has not gone a full revolution, you should end up in the same place as if you hadn't disengaged the half nuts.
This way it is much easier to avoid a crash against a shoulder.
Thanks for another great video!🙂
Exactly. Many also teach, who have been in machining all their life, that regardless of what the lathe is designed to cut, metric or imperial threads, they never disengage the half nuts although the method mentioned below by Jack_C_ also works. I don't disengage - I have a foot brake and my foot hovers over the brake bar ready to pounce. Nevertheless, good backside "pucker factor" when threading up to a shoulder. No time for distractions.
Fantastic - for the sake of saying something a little different - your mistakes - i.e. reversing instead of using dial for threading - is an incredible learning/teaching view/experience for us - nice Job young man - cheers
Kurtis (CEE Australia) cuts all his threads by reversing. 😊
thats helpful.@@BruceBoschek
This lathe seems to have a metric leadscrew, if that is the case you have no choice but reverse if you want to cut imperial threads. The same thing would apply if the leadscrew was imperial and you wanted to cut metric. The thread dial is only useful if the leadscrew matches the thread you want to cut.
Great video , as you say it's good to use different skill sets and change up the work load keeps it interesting not doing the same thing day in day out . Tig looked good from my point of view not everybody has the time to keep up on certain skills as they change for the daily requirements . Could be your next job needing tig could be tomorrow or 3 months time . Might be time to invest in a set of thermal overalls or you might not be able to move much with all the layers .. cheers for sharing the rebuilt very interesting
actually very interesting how you explained thread cutting setup and your wide range of repair skills
Was very interesting to me! I really enjoyed following along & learning with you - I've never quite figured out the dividing head yet! Thank you so much & looking forward to the next one! All the best!
if i remember right kurtis cee aus does his threading the same way. i'd say your in good company. good job smart fix.
wow that torch is huge you need a number 10 water cooled torch so much easier to deal with.
I've not seen that type of rotating head before. VERY interesting - thank you SO much for explaining it. Your honesty and openness is fantastic. Learning on the job makes it all the more interesting (if not a bit stressful I'm sure). Excellent video.
You're a smart lad! And doing a nice job on your videos. Thank you from Florida!
Really good video Olly, I haven't the nerve to try cutting threads on my lathe yet!!
Go for it!
Good to see you learning the new skills. Great video as always. Stay warm 🥶🥶
In a word, Impressive.
Thank you for your video. Interesting diversity of work.
Well u soon learned how not to pull screw cutting leaver out of gear ...it turned out really good well done sometimes its good to tax ya brain on a different challenge keep up the good work thks for the video look forward to the next one...
Nicely Done as per usual Oliver 👏.
Thanks so much for bringing us along.👍🏻
Excellent job my friend, great video, keep'um coming..
Awesome video, amazing work. Thank you Oliver
You could do with being sat down comfortably and also having a support for your wrist
when you do all that Tiggery Pokery.
all your jobs you do are interesting ,pity its so sodding cold in the shop ,least its dry , good bit of TIGGINg , keep at it we ll wait for next video , regards to you from essex
Fantastic content, well done and please keep it coming 👍
I for one found it interesting as all your projects. Thanks.
Great work!