Hydraulic Nut Opening Jack--why to keep it Quarter Turn Open??

What happens if you dont keep it Quarter Turn Open??
Consequences of Wrong operation of Hydraulic Nut opening jack.
Significance of Keeping the Jacknut quarter turn Open
#RMETCVIDEOS # MarineEngineeringtraining #RMETCtraining

[@vikrammgokhale]

Another small point: whenever you tighten the jack initially, you now get to use the 'full travel' of the jack and also to squeeze out any air (from inside the jack) too. Very well explained, Ramesh 👌👍

[@lukmanbakare3195]

I appreciate your videos. I have got to learn alot from your video illustrations. But just a one point to add from my experience on hydraulic jack is that there is a vent which is opened and closed to purge air in the jack before continuing pressurizing the jack.

[@zaneetjoshi3126]

Great bada Saab perfectly explained ,couldn't have understood better. Thank you sir

[@manjumanl5279]

The Intro is just magnificent !!!! "Anything you do without understanding it will become a ritual" a wise man once sad ....

[@rmetcvideos]

People who follow rituals may do things correctly as long as circumstances dont change..but might not be able to trouble shoot :-)

[@user-np4vq8er9c]

Thanks for your honest efforts behind such fruitful videos !! We would like to hear stories/experiences which could be great learning for us

[@amitkadam1304]

Very clear explanation, perfectly fitted in brain 😀

[@sudamsays]

you are great bada saab.

[@vailankanfernandes2168]

Sir your videos are too attractive.. Even a nonmariner or a normal person who is not a engineer would love to watch all your videos ...we all want more and more video from your connected with your stories and testimony...your presentation sir is too good...I serious suggest u sir..to put up ur stories real experience...it helps all of our marine engineers group to relate with that situation...

[@v.cvlogs0007]

very nicely explained .... thanks chief 💥💫

[@prakalpagrawal808]

I always heard hydraulic jack will get stuck if quater turn not open but never able to imagine it so clear. Thanks sir for giving us such a clear picture. We always wait for your such new informative videos.

[@amaranand2871]

Nice one sir 👏

[@abhishekkahane6293]

thank your sir for clearing concept of quarter turn

[@johnsnow9224]

1:30 Yes sir we want hear ur experience about that 👍

[@rmetcvideos]

thanks. will do.. waiting for free time

[@akshayinks4043]

Thank you so much bada sab..

[@rishabhphogat8034]

Have faced this issue when I was doing my 1st ship....this video is something which clearly mentions the process...big thanks to u sir

[@rmetcvideos]

Great to hear!

[@stephenoverton8500]

Thank you for this video, it will really help me out when sitting my oral exam.

[@rmetcvideos]

All the best..It is definitely a stressful experience till you clear. 😊

[@deepakshanmughan7928]

Thank you very much sir for the video. ❤

[@sumitrawat2877]

There we go again with another eye-opener. Thanks a lot sir. Still wondering of your cylinder head story 😁

[@alterator]

Thank you, sir

[@SuperSandeepkr]

thank you sir

[@satyabratgaan4918]

Thanks Sir for your video. If u take original length of stud=d, then when we tighten it let it elongate to d+d1. when we put jack and elongate let new length =d+d1+d2, then we loosen the nut, and release pressure so now stud has to come back to its original length that is d, but because no quarter turn back was given hence it reaches only d+d1. Hence to give that d1 distance for stud to get back to original length d we give it a quarter turn back. Bada sahab thanks for your nice video

[@johnsnow9224]

Please share the story with us sir.. it'll b helpful to us to avoid that mistake when work on hydraulic jack. Thank you for the wonderful video🙏

[@kamelshehata184]

Best regards,, please explain ,if hydraulic jack stack,which good idea to remove again.

[@vikrammgokhale]

Yes, even during the workshop sessions, I've seen candidates neglecting to follow this procedure and then being unable to remove the hydraulic jack 😉

[@soorajnp4865]

Off course sir the story please

[@ashutosh5322]

Sir how we elongate two step by hydraulic nut? Once the hydraulic piston reaches the max top position, how can we tighten for high pressure without releasing the pressure?

[@malhotrakanak858]

Very helpful sir kindly please made a series on ship stability damage stability cross curve it will be very helpful sir..💐💐

[@rmetcvideos]

I am afraid, its not in my area of familiarity.I guess there may be many more competent than me to explain this topic.🙏

[@malhotrakanak858]

@@rmetcvideos okay sir

[@AnilKumar-xi7ln]

We want that story sir 😊

[@rmetcvideos]

OK..will do

[@sharanrao3863]

Would like to listen to the story sir....Please make a video on the story of real time experience

[@rmetcvideos]

Ha Ha real time experiences are about --What NOT To DO--will not fit in here.Need to start a new comedy channel for that -:-)

[@geenumaxy9370]

excellent , please tell the story also which u encountered

[@rmetcvideos]

No drawings available for that Old Engine.. SO no story..:-) sorry..

[@prakalpagrawal808]

Sir, Please make video on ICCP as well.

[@rmetcvideos]

Wonder if there is any scope for graphics and animations...

[@RAJKumar-mu4vp]

Please share the story, sir

[@arvind87043]

Hi sir..thnks to make me undrstnd so well...one thing i would lik to knw. sir, had struck whn i was opening the hydraulic nut .same procedures three thing u said i followed..result was nut was opened bt could not open hydraulic jack, jack piston supposed to come down bt it did not come down...the pressur was 1500bar...aftr tht we again tightened nut with 900bar ..again release d pressure..bu this procedure nut was opened..bt i did not understand the procedure..plz enlighten sir

[@rmetcvideos]

I think the nut was opened too much such that it touched the Jack piston,That is why the pressure was much more and the piston also did not come down.. just guessing

[@randomtakes8259]

Please share the story sir

[@kkmurthy4370]

sir please tell the story which you mentioned during start of the video.Please put a video on balanced and unbalanced rudder concept sir.

[@rmetcvideos]

Ha Ha -- Will move on..That was a K90GFC Engine.. Not getting the drawing to explain.Basically it was a slight misalignment of the JACK RING which resulted in False Pressure Buidup

[@anupampatil6415]

Can you Please create video on Angle decoder working principle🙏

[@rmetcvideos]

Already done

[@suranjanghoshal3390]

Hello Chief! Ur explanation provides very clear picture and really helpful. Chief I have one doubt, please clarify here itself. This quarter turn practise is safe and mandatory during untightening of hydraulic nut as the stud is already in elongated length as nut is tightened..what about during tightening time.. Because that time the stud is in original length.. Would it be required to keep quarter turn??..

[@rmetcvideos]

Theoretically not necessary....Correct??

[@suranjanghoshal3390]

@@rmetcvideos yeah sir... Theoretically not required while tightening hydraulic nut

[@suranjanghoshal3390]

As stud will be at elongated length and will have tendency of stud to shrink but won't come to back exactly original length.. Hence the piston which is srewed with stud's thread will also be in that position and won't touch the stationary cylinder part.

[@suranjanghoshal3390]

@@rmetcvideos but yes...as engineer safe practise... I would like to opt the practise of quarter turn while tightening also... Always better to double ensure that after relieving pressure, piston don't touch stationary cylinder surface, before stud returns to original length. Though theoretically while tightening not required.. Please have input sir!

[@rmetcvideos]

Keeping quarter turn open while tightening is no harm.I used to keep. So no problems

[@shashankrawat9106]

While opening the hydraulic nut we loose the jack quarter turn - concept understood from the video. Is quarter turning is done when we want to tighten the hydraulic nut or not? Some Chief says to turn jack even while tightening but some don't. If I apply same concept as in video then after tightening also if we did not turned the jack, when we will release hydraulic pressure we again cannot unscrew the jack. Please clarify my doubt.

[@surendarj8935]

We don't need to open quarter turn for tightening hydraulic nut because it is not in stretched condition u have to fully tighten hydraulic jack to the spacer and make sure hydraulic piston is fully tightened into Jack by slackening purging cock and tighten it ,if not your oring will damage when piston lifts maximum from jack

[@udaybhargava]

@@surendarj8935 How so ? As after tightening it will eventually become stretched and same problem will be there. Please elaborate.

[@engineeringatpeak1813]

Plz sir story

[@arunf100]

Story pls sir

[@gajendramaran5798]

please tell us the story sir it will be helpful

[@rmetcvideos]

ooh..actually , i am not able to get the drawing..it is about the hydraulic ring in MAN BW KGF engine. So it is becoming very difficult .Sorry

[@ayanchatterjee5858]

With due respect sir,what is going to happen if we loosen the nut and it touches the jack piston?? As we release the pressure the stud along with the nut and jack piston will come down,but still it interferes with the operation. Sir can you kindly help me to visualize the above issue.

[@udaybhargava]

I think in that case the nut will get stuck with the piston, as when the bolt will compress it will also take the piston with it and probably we'll need to pressurize it again to tight the nut a bit to open it. Also it wont let the piston to come down fully thus pressure will not be reduced.

[@deone786]

Sir, stuck hydraulic jack can be opened by again raising the hydraulic pressure (again elongating the bolt) or there's no space left for hydraulic oil to go beneath the moving part of jack? what could be a possible way of removing it?

[@rmetcvideos]

Increase pressure again..and then retighten the cyljnder stud nut...release pressure and start all over agaun but keep the hyd nut more than 1/2 turn open

[@deone786]

Okay thank you so much sir ,I really appreciate that you responded to my query@@rmetcvideos

[@deepakshanmughan7928]

Please do share the story with us sir😊

[@rmetcvideos]

Difficult now since am not able to get the diagram of KGF Engine

[@deepakshanmughan7928]

@@rmetcvideos ok sir... Always happy to see ur experiences through cartoons

[@vaiz389]

Sir pls say correct way to handle the situation if jack gets stuck thank you

[@rmetcvideos]

Retighten the nut to 1000 bar or whatever..now do it again by keeping the jack quarter to half turn open

[@vaiz389]

@@rmetcvideos thank u so much sir

[@prakalpagrawal808]

Thanku sir for informative video. Please share the story as well. We shall have some good learning experience from it.

[@rahulbalaji2637]

Story please sir

[@chandrakala8592]

If I open one turn what happened?

[@rmetcvideos]

If you open one turn, IT will take quite a long time to build up pressure. Hope you will remain patient till it builds up ..:-)

[@lahiruwickramasinghe6547]

@@rmetcvideos it won't take much time to build up the pressure, normally in big engines(98 bore) we used to open hyd. jack one turn and loose the nut. Its also a good practise when we realease hydraulic pressure, reduce it by very slowly and each time with the tommy bar check whether nut is freely moving.

[@surendarj8935]

If we open one turn or more, then hydraulic piston lift from jack will more that will results in oring rupture correct me if I'm wrong

[@TheRealDefacto]

Sir the story.. you didn’t tell yet 😅

[@rmetcvideos]

Very old story not relevant anymore ---KGF Engine which you all cannot identify with ...The gist of the story -- WE actually never tioghtened the nut ..Ha Ha..WE only presumed bcoz of pressure..

[@imrankazi2759]

Gmg sir can u plz send me ship windlass vidio not getting in ur groups Thanx best regards Imran kazi 2nd eng xt ship MGMT

[@rmetcvideos]

Already made..It is there ..Please check in Playlist