Stern tube Seal chrome liner, Significance and Repair video |RMETC |Ramesh

This Video deals with the #SternTubeAftSealChromeLiner.
Why do we have chrome liner on Stern tube seal??
How do I Repair Chrome Liner of Stern tube seal??
Earlier video dealt with wet #PushupofPropeller. Recommend that you watch the video at the link • What is wet Push up of... .

[@sumitrawat2877]

Sir even if you make an hour long video, i am sure a whole lot to engineers will watch till the end. This is true gem of a knowledge 🙏

[@vaibhavnayak626]

Exactly ...I also thought same!!!

[@deepakshanmughan7928]

Me too

[@wilsonmatias1020]

An awesome illustration sir. A great legacy to all marine engineers. Salute to you sir!

[@Sujeetkumar-qs6sn]

Sir no problem with long videos..... Please continue to share you valuable knowledge to us. Your videos are very helpful to us. Thank you sir

[@heyrao58]

Very good and informative sir..Any doubts ,I come back here.

[@aryangupta1901]

Found such good explanatory videos for us for the first time ..... Thankyou sir....keep posting ❤️❤️

[@girish8776]

Thank you sir you clear my doubt by showing animation. Its crystal clear to understand

[@raushankumar3379]

No problem with long videos .....thanks you sir

[@occasionalyoutuber.9232]

Very interesting sir. You put long vdo. Your way of descriptions is really amazing

[@siddharthchakraborty7308]

Sir .. your videos and explanations clear all basic doubts .. the things which are difficult to imagine you make them look so understandable.. thank you !!!

[@MahabharataIberoAmerica]

Excellent videos Chief. Thanks! Jaya and Vijaya always.

[@shipjourney8132]

Thank you very much sir for enabling us to understanding the topic crystal clear.

[@sundhukumar]

awesome explanation with CG,...Kudos saab ji

[@rashaadkoff8926]

I'm retired Marine Engineer. Did ship and Rig repairs for over 45 years. Beautiful memories. Love your Video" to the point. I see you old Guard. Keep on being the Mentor for the younger generation.

[@rmetcvideos]

Thanks for watching!

[@parassharma4370]

Sir, i am really thankful to you for making such knowledgeable videos for us. I am preparing for meo class 4 exams and i simply love your videos.

[@wrishabkashyap6102]

We are grateful to you,thank you sir..keep motivating us.

[@arunm7483]

Your explanation is very good and easy to understand ...thank you sir

[@kivicheeku5368]

thank you sir, ur videos are helping very much in preparing exams. god bless you with good health and prosperity.

[@bhaskarbhattacharya4662]

Thank you for the wondewrful video sir...They just make our concepts crystal clear.:)

[@lakshmananmani4632]

Congratulations on yet another nice video. Hope the next video would be on the forward seal. Kudos for your efforts.

[@alexkoshy01]

Very interesting Sir. Thank you for uploading such informative videos. 🙏

[@sathishkumar-bv7hc]

Sir the main engine sound at the start of the video is interesting. I love it.

[@espada0000]

Thanks alot Sir. Shout-out from Myanmar.

[@ramoluramu1409]

Thanq very much Sir for given wonderful explaination

[@1991shalabhagarwal]

I never have seen such a detailed explanation of the stern tube chrome liner, this is like a Eureka moment for me, but yes recognised by Ramesh Sir. Thank you for such an amazing explanation.

[@rmetcvideos]

Glad it was helpful!

[@praneethtillekeratne3496]

Very good explanation sir!

[@samishahid9250]

Thank You Sir for Amazing Explanation

[@user-zu7jh8jf4p]

AWESOME VIDEO THANK YOU

[@Smart-ci6nw]

Thank you so much for your effort to share with us you reach experience.

[@pm3374]

Very useful and clear explaining....Thank you sir....Greetings from Srilanka....

[@rmetcvideos]

thanks..have very fond memories of Colombo...

[@anatolijskrjucenkovs2685]

Thanks a lot, Chief.

[@krishnamohankumargudupu3539]

Very much useful sir...Thank you so much

[@anandsagar9132]

Thanks Sir .. Please keep teaching 👍

[@geenumaxy9370]

gratefull for ur effort to make such a nice video

[@sanjeevnagoorpitchai8706]

Great explanation sir

[@francisvjoseph9]

Suuuper class, thank you very much sir🙏

[@nikhithamin2951]

Thank you for the explanation sir

[@muhammercelik5661]

Thk for the info Chief.. up to 20 min is good....I think...just sugestion

[@raushanranjan3316]

it was very helpful for class 2 preparation

[@shakilmahmud6179]

Excellent video sir...love from Bangladesh.

[@rmetcvideos]

🙏Gr8 to know thag u liked it and also that u are from 🇧🇩 .Have nostalgic and happy memories of conducting Hydraulic workshops in Dhaka and Chittagong prior to Covid..

[@aswinkrishna01]

Sir , your videos are awesome and very much effective. Could you please make a video on sterntube construction.

[@KUMAR03124]

Another great video... You are in the better than khan academy, courser now.

[@deepakshanmughan7928]

Thank you sir👍

[@mahmoudhassan3052]

Good explanation

[@VARUN93383]

thank you for your video sir

[@jinurajan1138]

Thank you sir.

[@RahulKumar-rh8xm]

Thank you very much sir

[@spatuelmwachari263]

Thank you too

[@chalangavithane7777]

Thank you sir ♥️

[@luaiaslam8814]

Thankyou so much sir

[@lijango95]

very helpful

[@abhishekkahane6293]

simple explaination

[@RajeshKumar-mt3pg]

Pls put a full video.......repairing and all ......if video gets longer not a problem........we'll get knowledge......

[@vikashpandey7711]

Salute

[@salmanmulla6379]

Thank you sir for such informative videos they really help during meo class exams and very easy to remember. One doubt about shifting of seal holding block forward by removing distance pieces. I told surveyor during exam but he disagreed. I think only skimming method surveyor want to listen.

[@rmetcvideos]

Ha Ha.. need to tell what the surveyor wants to hear..if you want to pass.. But need to know the facts if want to run ships...The distance piece removal method is not my invention .It is very much from the manual...Wont be surprised if he goes home and quietly reads more after disagreeing with you ..Ha Ha...Remember-- Surveyors and Chief Engineers are also humans who might have slipped thru the system without being aware of a few things...I know ...how much I dont know...

[@haivungoc9690]

thank you sir !!!♥♥♥♥♥♥♥

[@ashikmohamedali6651]

Good day sir. Hope your wellness good. I have watched all-videos in your channel. Since giving my class 2 I have doubts with sealing arrangement of stern tube. Kindly include any video regarding that. I wish for you and your family a good health during this pandemic.

[@rmetcvideos]

sure... in future

[@mdidris2111]

Explanation with simple terms. Thank you very much.

[@TheAnshu1234]

Sir please make long videos as well.If someone is not interested in them,it is certainly their own loss.

[@1991shalabhagarwal]

Please do make a video on Pilgrim nut method of propeller removal as well. It would be really helpful.

[@rmetcvideos]

Sure I will

[@sanyammoudgil8339]

Sir please make videos on these 2 topics 1) crosshead 2) thrust block Most of us juniors find it very difficult to imagine all this

[@ekadashbirsingh8101]

Sir please make long videos with whole lot of knowledge.

[@rmetcvideos]

Thanks.. Long Videos are not doing well. People might not have patience to see long videos.

[@lavanyaarora6951]

Sir make some video on boiler and main engines

[@MalkeetPrempura]

thanks Sir, please keep posting videos irrespective of time. sir can you share video on propeller shaft alignment

[@rmetcvideos]

Interesting ..will try if time permits

[@vaiz389]

Thank you so much sir , Please do more videos likes this Sir whats the space between shaft and sterntube between forward and aft seals

[@rmetcvideos]

We have the stern tube...then frd and aft Bearings which you can see in yellow color and the seals..

[@amaranand2871]

Nice one sir 👍... it’s not like that we have patience to watch long video... because your content is extraordinary...coming back to video... cover remaining part seals... their testing in dry dock... and please when even u cover any topic please cover latest one ... such as air seal... not old one two gravity tanks ... please cover pilgrim nut fittings with minute details ... stay safe sir and god bless you .. take care sir

[@rmetcvideos]

Thanks for the thumbs up...would love to do as time permits..But the topics you are pointing out are very much circulating amongst the students ...they are HOT Topics ..so mostly everybody has access to some notes or other material. I am generally looking at the practical aspects where info is not very readily circulating.

[@amaranand2871]

@@rmetcvideos agree sir .... want to see from your eyes... testing of seals not covered ... also cover in case of leakage of oil temporary measures... cover TMON survey and requirements(class) ... many things are there ... and your steering gear regulation videos was amazing ... best ever made on cloud

[@rmetcvideos]

Thanks...Regulations are always cloudy.. Just trying to remove the cloud from the mind to understand it slightly better.:-)

[@ashishsharma8950]

Thank you again for the awesome content and way of presentation. Sir although we are not physically shifting the liner but we still call it the liner shifting method.Is it because of the relative shift of liner, as we shift the seal carrier.

[@rmetcvideos]

Yes, you are right

[@kalyankumarseth7709]

Sir we need your knowledge...

[@dashpot06]

08:30 sir, we are pushing the seal forward. how about the sealing oil supply line. Wont it get disturbed?

[@elmerharrisonm8210]

thank you sir for the useful upload...sir please can you confirm whether skimming the chrome steel liner affects the length of the nitrile rubber seals or the garter springs and do they have to be trimmed as well?

[@rmetcvideos]

Not Really.. we dont do anything to the seals. WE are trimming the liner Diameter...not length.Seals do not get affected in anyway. THe trimming is also limited, so as to keep the hardness of the liner still active and also the effect of the garter springs not reduced beyond acceptable value...ANother small Correction to be made in the Video...The trimming is usually by GRINDING and by turning.. we normally do not TURN hard surfaces and hardened surfaces are using put through a grinding process.

[@jaimintandel7340]

Sir I have doubt about thrust block why thrust pad located only 180°- 240° only?

[@venkatraman07]

very nice video sir .. can you please share if you have any material regarding stern tube seal replacement.

[@rmetcvideos]

OK .. will plan in due course..but a lot is vailable in inetrnet

[@rakeshshanmugam2356]

Even if it is going to be hours, we are eager to watch sir. Where else we get to see such a detailed video in every subject. Detailing and explaining are top notch, of course the man itself is such an experienced mariner. Only one thing to say sir, thanks for sharing your knowledge to juniors. 🙏🏻🙏🏻🙏🏻🫡

[@shankarrams3834]

Plese note only removal of the distance rings are preferred to adding. Also there are gaskets between the distance rings. We can have any number of such rings,but normally u find two.

[@shankarrams3834]

Also one has to check for the seal unit concentric alignment.

[@eftekarahmed2120]

Thank you sir. How meet you?

[@rmetcvideos]

where r you from

[@ransonfernando6789]

Please put video on stern tube bearing construction

[@rmetcvideos]

Ha.Never knew that people would be interested in the construction part...OK..will keep it in mind

[@AshishKumar-qn9rc]

Sir can you do a video about fwd crome liner maintenence.

[@rmetcvideos]

Same concept as aft liner...Only Removal is different.

[@gurtegsinghgill]

Sir can the tailshaft be repaired by welding in way of the keyway?

[@rmetcvideos]

I guess everything is possible..but need to be done by experts with process which will need to be approved by Class.THe process may involved approval of electrodes with their base mettalurgy and also the welding process and the Heat Treatment and curing process..

[@bullseyetrading9819]

Sir the liner and shaft move together. There is no relative movement? As the liner is bolted to the boss??

[@rmetcvideos]

The liner is not moving ..bcoz the distance ring is removed the seals are shifting wrt liner..obviously shaft cannot move bcoz of thrust bearing

[@engineeringatpeak1813]

Sir how I come to know that thermostatic expansion valve working perfectly .. During normal round or watch keeping... ??

[@rmetcvideos]

Low suction pressure but the evaporator outlet pipe is not cold enough.....high suc press and evapprator suc pipe not gols enough...improper superheat etc

[@AhmedSamy-to3ez]

but option 2 will affect the hull clearance therefore increase the vibration from the propeller, what do you think chief ?

[@rmetcvideos]

How ?? Nothing is changing. Only the Seal casing is moving forward slightly. The Propeller shaft stays where it is.. obviously .there is no effect on vibration etc.

[@AhmedSamy-to3ez]

@@rmetcvideos okay, got it now, looking forward for more interesting videos, thanks

[@vidyavikash3885]

sir is chrome liner shrink fit to the propeller shaft?

[@rmetcvideos]

No.It is slide fit...Can easily be removed...

[@santu17101984]

sir how we use poker gauge to measure stern tube bearing wear down

[@rmetcvideos]

I think we discussed about thsi in the Stern tube repair video.ANyway it is done by removing the plugs given in the Seal housing

[@sreeprakashp5214]

Sir, While removing and installing back, crome liner and seals are taking together? Or first romove chrom liner, then seal. Please reply

[@rmetcvideos]

Generally together

[@sreeprakashp5214]

@@rmetcvideos chrome liner is shrink fit with shaft right. So it also will take out by jack?

[@rmetcvideos]

@@sreeprakashp5214 chrome liner is not shrink fit on shaft..it has got clearance..that is why you need centering...

[@hovantatarian3118]

@@rmetcvideos is there a maximum clearance of the chrome liner and the shaft?

[@amarjeetsingh2016]

sir, how is forward liner attached to the shaft??

[@sanyammoudgil8339]

Using clamp ring

[@rishukapoor2835]

Sir, does chrome liner rotates or it is stationary?

[@rmetcvideos]

Since it is fixed to boss of propeller,it rotates...

[@Jansena_324]

Whr is guard ring in shaft sir

[@rmetcvideos]

it is a cover with some sharp cutters which is welded to the the aft end of ship

[@manojvishwakarma9954]

Sir ,please make a video of stern tube seal repair when vessel is afloat

[@rmetcvideos]

will do in due course

[@user-zu7jh8jf4p]

I AM SURE THAT U ARE INDIAN

[@rmetcvideos]

Yes . I think you are a good troubleshooter bcoz you could find out ... 😄 ha ha :-)

[@arutsudar4199]

Thank you sir

[@manojgk8433]

Thank you sir