Doc Harley’s caution for Twin Cam projects

[@darrell3368]

Thank Dr Harley keep up the great shows and tips ps Gods blessings to you and all your family

[@LowCountryHarleyDavidson]

I truly appreciate the blessings…Doc

[@hazepennington9303]

Great info DOC Harley , I recently did the heads on my twin cam for the first time and I was lucky to spot this problem in time I also found out another place is the cam cover and oil pump bolt holes where oil will puddle up into some of the holes , I clean the holes out with a Q-tip and Yes it's a great idea to always clean out any holes on your motorcycle that collects oil before threading any bolt into them , that could save a person a headache , time and money.. Thanks alot DOC Harley 👍💯

[@edharbas4828]

Thanks for the pointer.

[@PSK66az]

Thank you for sharing all you years of experience! Saving us 100's, 1000's of dollars and all the frustration

[@Peter-976]

Excellent tip Doc!! Thanks

[@edharbas4828]

Thank's, again, Doc. As usual, a couple of visuals and your synchronized diologue, a real helpful piece of cake. Cheers all around with that beer.

[@LowCountryHarleyDavidson]

I appreciate you watching and your support….Doc

[@valjatriogina228]

Really grateful of getting rid of my 04 Heritage! Swapped for a Honda Fury. Peace of mind and fun to ride! Even after more than 30 years on Harleys, i will never go back!

[@dieselsoggydog6299]

At the moment you said the bolt started to slow down but still goes in, I guessed oil was in the whole. Simple air gun to cleaner it out works. Can't believe that casting can break with that light of torque. Those bolts do look like they are longer than they really need to be.

[@jerrylong381]

Thanks for the tip, Doc. Nothing hurts the heart like installing a bolt and hearing a "POP!". It's amazing how much force can be generated by a 1/4"-20 bolt on a confined fluid. I learned my lesson years ago when putting the primary cover back on my 73' Sportster after rebuilding the clutch. I'm spinning the bolts in with a tee handle allen wrench, just bringing up to contact when I hear the "POP", and I see old silicone coming out of a crack in the case like little blue hairs growing before my eyes. My heart dropped to my toes. Luckily the crack was just between the bolt hole and the outside of the case. I was able to put sealer over the crack and finish the summer before tearing it down and getting it welded. That was the day I became religious about cleaning the threads on every bolt and bolt hole I deal with. The previous owner was a big fan of silicone, asI discovered when I rebuilt the motor. But the damage was my fault for not being meticulous in my work. Silicone is not oil, but they behave the same when put under pressure with no where to go.

[@edharbas4828]

Conversely, would, say, a 1/32 drill hole through the centre of the fastener help by allowing pressurised trapped oil to escape as it was being fastened? The drill hole could be cleaned out of old sealant if need be. Mind you I do realise a cotton bud would be a lot easier, just barn-storming. Cheers

[@jerrylong381]

@edharbas4828 I clean them out with the correct size tap and then blow it out with compressed air. I've never had a problem after doing that.

[@LowCountryHarleyDavidson]

Thank you for taking the time to post your experience….Doc

[@samrotolo7303]

Thank you for the reminder I dont think I am taking that serous enough. I have a rear rocker gasket leaking/weeping and I read to clean out oil from holes but I have now made note in my service manual for when I decide I am going to fix my bike.

[@LowCountryHarleyDavidson]

You're welcome, good luck with the project…Doc

[@rsbharley4766]

Excellent tip Doc, thanks for taking the time to share. Cheers

[@murphy6767]

Don’t use the same bolts either the old breather has longer bolts. The new breather has shorter bolts. FYI. ✊🏻✊🏻✊🏻

[@greenmarine5]

very good point Doc, liquids can't be compressed so something has to give. 👍👍

[@neildewitt2869]

Merry Christmas 🎅 Doc from Alaska!

[@donpet8258]

Very useful info !! Thanks much !! I just had mine replaced. I’m glad the Harley dealer did it now. !!

[@user-vr2tx4tt6b]

This is why these videos are so great. Thank you, sir.

[@kmeades43]

That's a good one Doc. Thanks for the great advice. Ride safe from Sydney Australia 🤘

[@LowCountryHarleyDavidson]

Glad you enjoyed it…Doc

[@kiwibiker9754]

Classic! As a wiser man than me once said " a little bit of knowledge is a dangerous thing!"

[@williwichtig9344]

Hi Doc, thank you very much for this. It's a brillant information for everyone doing it for the first time. Greetings from overseas, Germany 😉✌️

[@LowCountryHarleyDavidson]

Thanks for your post from Germany…Doc

[@maddog3080]

Thank you for trying to save us from costly errors, greatly appreciated!!!

[@GIGABACHI]

Holy Crap. Way to ruin your day in the most innocent way thinking your are doing yourself a favor while learning something new. Thanks for the heads up ! Very important info.

[@RiseNRip]

Just in time Doc! I'm doing this job on my bike next week and didn't know this.

[@LowCountryHarleyDavidson]

I'm glad I could help…Doc

[@gordonmiller7246]

Hanks for the tip as always Doc. Great job.

[@LowCountryHarleyDavidson]

You are welcome Gordon…Doc

[@jamesskinner1101]

Thank You Doc Harley! And thank you for taking time to meet and talk with me.

[@LowCountryHarleyDavidson]

You’re very welcome and a pleasure to talk with you…Doc

[@doylehenderson319]

Thanks Doc for a very valuable tip!!!!! That's working like a brake line.... you can compress air but not liquid. I hope you and the family had a great Christmas together and wishing you a Happy New Year!!!

[@LowCountryHarleyDavidson]

You are very welcome, and happy new year…Doc

[@jeffmorrison5274]

Thanks for Tips and I never knew about this... you are man DOC ! Have a happy Holiday !!

[@LowCountryHarleyDavidson]

Thanks. Happy New Year….Doc

[@lukepace8546]

Great video and tip as usual Doc Harley!

[@LowCountryHarleyDavidson]

Thanks for watching…Doc

[@paulprosser4108]

Another excellent tip Doc. Hope you continue to educate us home mechanics. Hope you have a good New Year.

[@LowCountryHarleyDavidson]

Thanks, you too…Doc

[@johnhammered3321]

Every bolt, when removed, needs the threads cleaned and dry before reassemble, including derby cover bolt holes! I can't tell you how many derby cover bolt holes I've seen stripped!😂

[@LowCountryHarleyDavidson]

You're absolutely right. A little time there can save a lot of trouble….Doc

[@geraldgoodiii6993]

Those derby cover bolts are soft as hell on the head. I think the torque specs are a little high for what they are tho. I’ve had one get stuck coming out and strip the head .. thread portion was fine it was the head that basically welded itself to the derby cover (not TECHNICALLY welded of course .. just stuck from riding hard in hot weather it got mad hot and that thing wasn’t turning at all.) Cut the head off with a little grinder and the threaded stud left was able to be pulled out with just my fingers (had a needed nose vice grip ready but wasn’t needed at all). I won’t reuse those bolts more than once (the one time I was cheap and let em ride for 3 primary oil changes .. I do every 4k with the oil and tranny .. cheap insurance

[@johnhammered3321]

@geraldgoodiii6993 58 years of riding and I've never stripped one. I've repaired many. The proper use and care of tools should provide many years of service. I think the issue is people have a tendency to overtorque when attaching or not properly preparing each screw and or screw hole as doc says. Most screws, bolts, and attachment points today are of aluminum and soft metals. Back in the old days things were made of iron and steel. They were more forgiving.

[@scottlin777]

Thanks for another great video doc.

[@LowCountryHarleyDavidson]

Glad you enjoyed it Scott…Doc

[@stlchuckhd]

Ouch! Thanks for the video Doc!

[@oldamerican8070]

Thanks, Doc. , I enjoyed hearing all your advice .

[@LowCountryHarleyDavidson]

I appreciate your time watching…Doc

[@Rollie396]

As soon as I saw the thumb nail I knew what this vid was about lol I’m amoung the meatheads that did this. I heard a little plink sound when I tightened that bolt and I learnt a lesson that day. I mixed up some jb weld on the end of a popsicle stick, smeared it around the underside of the casting and let it cure. That was 12yrs ago and I haven’t had the leak since….I’m also sure to blow out blind holes now before threading a bolt into it.

[@LowCountryHarleyDavidson]

Thank for sharing your experience…Doc

[@MarshallParsley]

Thanks Doc. I’m making a note of it right now in my service manual.

[@hdbikerdave5835]

Thanks Doc. Merry Christmas and Happy New Year!

[@Giuseppe_De_Bellis]

Cheers from Italy, Doc!☺️

[@LowCountryHarleyDavidson]

Gracie….Doc

[@Giuseppe_De_Bellis]

@LowCountryHarleyDavidson ❤️💪🏻

[@whip-its_dad4239]

That's good to know for sure . Thank you for your channel .

[@LowCountryHarleyDavidson]

Thanks for watching…Doc

[@danbarrette9888]

It’s all about the tricks when working on the Harley. Thank you.

[@LowCountryHarleyDavidson]

I am glad you liked it, thanks for watching….Doc

[@johnschoonmaker-tm3ll]

Great info, have noted it in my service log. Thank for posting this video. 👍

[@fearsomename4517]

Great advice Doc.

[@LowCountryHarleyDavidson]

Thanks for watching and posting. Doc

[@stevel7071]

Thanks for another great video enjoy the holidays

[@LowCountryHarleyDavidson]

Thanks, you too….Doc

[@lemontier]

Thanks Doc you are appreciated big time.

[@LowCountryHarleyDavidson]

You are very welcome…Doc

[@okiemale1589]

Thanks Doc... Thumbs up for the channel... 😎👍

[@LowCountryHarleyDavidson]

I appreciate it. Thanks for watching….Doc

[@h.d.mech.mortenson2098]

Hope you had a great Christmas Doc. Happy new year !

[@edmundwasilewski]

Thanks Doc, Australia 🇦🇺

[@LowCountryHarleyDavidson]

Always glad to hear from across the pond👍….Doc

[@shameless5868]

Preciate that tip doc. I never gave that a thought.

[@cameronbartley6139]

Wow that's crazy, the unknown.... Thanks for sharing that,what a headache that could be.

[@patrickhelstrom1778]

Q-Tips clean them holes out thats an easy way or air or suction

[@LowCountryHarleyDavidson]

You’re right, there are a lot of ways to clean those holes….Doc

[@FloridaBoilermaker]

Thanks for the warning, my 96ci thanks you also.

[@LowCountryHarleyDavidson]

Glad you got the message…Doc

[@Lem-HDtech]

Did it on 1 of my first jobs 😢 Cleaned and silicone was a good temp fix until we got a new one to replace it. Lesson learned. Great tip, always love the videos ❤

[@LowCountryHarleyDavidson]

I know that feeling from my early days…Doc

[@Lem-HDtech]

@LowCountryHarleyDavidson Indeed. Live, and learn 😍 Best to you and yours. Hope you had a good Christmas season.

[@jeremyankney1733]

First one I broke it popped really loud and an oil mess everywhere. Expensive mistake. Now I do exactly what you said. 😊

[@RodHog1]

Great video thanks hope you had great christmas and happy new year

[@LowCountryHarleyDavidson]

Thanks I did and the same to you…Doc

[@HellOfaDay54]

Thank You Doc for that good information. when did Harley change over to the newer breathers as I know in the older twin cams they had that older breather style. which I changed to the newer style in my 01 ultra about 3 years ago. So do you know when Harley switch over to the newer style breather as I have a 2011 ultra 110 CVO now. cuz I know I could look in the parts manual to find out. but it might help others to know when they switched.

[@dougk9647]

Well,.....that was a real eye opener. Thanks Doc.

[@irishguyjg_2ndchancerecovery]

Much respect from Minnesota SPORTSTER4LIFE 🍀

[@LowCountryHarleyDavidson]

Great to hear from you…Doc

[@gregmcbee2585]

Thx Doc. Great to know. I'm changing mine this winter. Just saved my ass

[@LowCountryHarleyDavidson]

I am glad it helped…..Doc

[@qf4phlyer]

Once again, Doc, great information.

[@LowCountryHarleyDavidson]

Thanks for watching…..Doc

[@classicrider103]

Probably would have never guessed that oil in a bolt hole would have created a problem. Now I'll be checking any and all bolt holes for any kind of debris before inserting a bolt.

[@LowCountryHarleyDavidson]

It can be a real pain but it can also be a good thing to do….Doc

[@johnsb1550]

I think I'm OK, but I'm definitely going to check that! I've always been able to thread those down all the way by hand

[@jonnycando]

At 60 I guess I will keep riding my Evo, but gosh...that is a tale of caution!

[@LowCountryHarleyDavidson]

Old School Ride on…Doc

[@Rockcityhooligan]

I have learned my lessons working with dirty holes, this is just another reminder to use thread chasers and shop air to make sure I don't go sticking my bolt in a dirty hole and end up paying the price.

[@Biker-Jim]

Well butter my biscuit Doc just taught this ol' dog something new...Thanks Doc

[@LowCountryHarleyDavidson]

You’re never too old to learn….Doc

[@CabinGuy]

Sometimes the least little thing that you don't realize can really get ugly on ya, thanks Doc.

[@LowCountryHarleyDavidson]

It’s amazing how something so small can make such a big difference…Doc

[@d1mennis]

You can try blowing it out with compressed air! Merry Christmas from Lexington S.C.

[@LowCountryHarleyDavidson]

Merry Christmas from Doc Harley!

[@nhrider88]

Thanks Doc. Another great tip.

[@graemejones7646]

Thanks heaps Doc!! Still a legend 🙌

[@LowCountryHarleyDavidson]

Thanks, but far from Legend just a man on KZbin….Doc

[@a.toddmoore7262]

What a great tip, thank you doc Harley!

[@LowCountryHarleyDavidson]

Glad it was helpful…Doc

[@tommontague5721]

Never knew.....Thanks Doc

[@JohnBlair-p2z]

great video. thanks for the heads up.

[@carrieemery7191]

WOW WOW doc beer how can we work with out the good stuff glad we have you but take it easy with the beer thank you for tips tho

[@LowCountryHarleyDavidson]

I'll try to stay focused…Doc

[@irishguyjg_2ndchancerecovery]

No beer, but merry Christmas and thanks for the tips and tricks

[@LowCountryHarleyDavidson]

Merry Christmas and you are welcome…Doc

[@alanwhiteside410]

Well now there’s a great tip! Thank you Doc. 😎👍🍻

[@busabobsgarage9876]

Thanks for this awesome tip!

[@jlc904ubc]

Thanks Doc. Great info. Great video.

[@LowCountryHarleyDavidson]

You are welcome…..Doc

[@willydavid]

Thanks Doc, you are a Harley master.

[@willtopower2158]

Always great information Doc, Merry Christmas and Happy New Year to you and yours!🎄

[@LowCountryHarleyDavidson]

Thank you and the same to you….Doc

[@randybard224]

Been there done that I heard it break I found the piece that broke off Cleaned it up / jb weld it in place. A little thread sealant on the bolt 80+k on the repair never leaked Lesson learned Now I blow every single hole out with air no matter where on the bike it is!!!

[@davoko]

Very good to know Thanks Doc

[@markkramer2908]

Thanks Doc!

[@MmFord45]

🤯 wow thats crazy & good to know thanks. Even though I don’t do any of my own repairs.

[@LowCountryHarleyDavidson]

Thanks for watching, you never know when you might….Doc

[@peterscully4961]

Just squirt a bit of brake cleaner or such in there, it will clear right up. You can TIG that up fairly easily - a lot of stick out and crank up the gas, fill with whatever.

[@LowCountryHarleyDavidson]

That’s beyond my skills…Doc

[@MichaelHeinrich1]

Thank you Doc.

[@LowCountryHarleyDavidson]

You are very welcome Michael…Doc

[@nvpoolshooter]

Excellent. This begs the question, what are the symptoms that your breathers need replacing?

[@Jimmy_Jim_Jim_1234]

Thats a GREAT tip thanks.

[@marks146]

Great warning. Also, make sure the shop gives you the correct NEW screws. Don't use the old ones. The new breather boxes are much lower profile, and the old screws will push out the bottom of the holes as they are much longer than the new screws. You missed the opportunity to point that out.

[@LowCountryHarleyDavidson]

Thanks for the tip, I'll keep that in mind for future videos…Doc

[@BrewCityRider]

Damn good info Doc! Thanks.👍

[@LowCountryHarleyDavidson]

I’m glad you liked it…Doc

[@67Screwy]

Brilliant thank you Doc

[@omurcada01]

Good to know thanks

[@richardschaffling9882]

Great advice

[@LowCountryHarleyDavidson]

Thanks for watching Richard…Doc

[@glennstatham960]

WOW, great advice!!

[@LowCountryHarleyDavidson]

Thanks for watching Glen…Doc

[@kennethanderson1685]

❤

[@haroldwiser2641]

Wow! 😮

[@kevinfaherty9887]

Thanks for sharing

[@LowCountryHarleyDavidson]

Thanks for watching Kevin…Doc

[@chargerman426]

So if you move to the "new" design are the bolts from the old design comparable? The new design appears to be a lot thinner than the old ones. Personally I like to rebuild the old style ones but understand that others would rather a new one piece design.

[@LowCountryHarleyDavidson]

The new design comes with new bolts..Doc

[@eddier9380]

OMG how many of these have I seen come into my shop

[@JCcanU]

Thanks Doc

[@gregduncan1001]

Wow thanks

[@scottlint7016]

I just blew a bolt out when replacing the breathers. I threw gasket maker into the hole and tightened down. Good to go, zero issues since.

[@glenmclendon9209]

A few Q-Tips works .

[@bogiewheelman71]

Good tip !

[@LowCountryHarleyDavidson]

Thanks for watching….Doc

[@eddiegerlach7121]

Does Harley-Davidson make rebuild kits for the air breahers so we can keep the originals? Judging by the pic, it looks much smaller than the one taken out...🤔👍

[@LowCountryHarleyDavidson]

Some dealers have the original parts…Doc