Comments on: What’s The Criteria For Reuse or Replacement of Auxiliary Engine Connecting Rod On Ships?

By: Bhupinder singh

Bhupinder singh — Tue, 01 Nov 2022 17:54:25 +0000

What’s the replacement criteria for the renewal of hydraulically tightened connecting rod bolts on Hyundai 6H21/32 engine.

By: ILIAS KOUNTOURIS

ILIAS KOUNTOURIS — Fri, 12 Mar 2021 15:23:48 +0000

VERY USUFUL ARTICLE INDEED

By: Anish

Anish — Tue, 09 Jul 2019 07:17:53 +0000

In reply to Kumar animesh.

@Kumar Animesh: The word to be used should be – “ROD” and not “WIRE” as wire can easily bent and take the shape of deformed connected rod. For e.g. in Yanmar Generator connecting rod deformation is checked by passing 8mm straight rod through oil hole to make sure not obstructing any where . If it does not stuck in between, the rod is ok.

By: Kumar animesh

Kumar animesh — Fri, 05 Jul 2019 13:18:02 +0000

Sir in my meo class 4 oral the surveyor asked ne how to check the con rod of generator is bend . I tell him the wire method in which a thin wire is inserted inside the lub oil hole of con rod if it goes smoothlt the it’s ok and if there is any restrictions in it’s movement then it is bend. But the surveyor said this is not the method for that. So can u tell me the method for that

By: a ali

a ali — Wed, 12 Sep 2018 07:41:58 +0000

yanmar
We strong recommend renew connecting rod nuts with connecting rod bolt for same timing.
Because the nuts was extended only little with 20000hrs.
If you didn’t renew connecting rod nuts with new connecting rod bolts.
It’s possibility new connecting rod bolts will get damage for part of screw.

By: Anish

Anish — Thu, 23 Aug 2018 03:57:57 +0000

In reply to AKSHAY SHARMA. @Akshay: Serrations are used to locate the two halves relative to one another.

By: AKSHAY SHARMA

AKSHAY SHARMA — Mon, 13 Aug 2018 19:31:30 +0000

What is purpose of serration and what preventive measure has to be taken to safeguard con rod serrated face film development?? plz help.

By: N k

N k — Thu, 02 Aug 2018 02:20:07 +0000

How we check elongation of bottom end bolt if new bola r nt available to compare?

By: Anish

Anish — Wed, 25 Jul 2018 05:31:57 +0000

In reply to Manikandan.

@Manikanadan: Please check this article – https://www.marineinsight.com/tech/generator/10-important-tests-for-major-overhauling-of-ships-generator/

By: Manikandan

Manikandan — Tue, 24 Jul 2018 22:07:47 +0000

How to check if the connecting rod is bent

By: Sarath Radhakrishnan

Sarath Radhakrishnan — Thu, 07 Jun 2018 06:40:27 +0000

The elongation of the con rod bolts needs to be checked and if beyond limit is supposed to be renewed.
However most of the Chief Engineers prefer to change after 24000 hours.

By: Frank

Frank — Sun, 08 Nov 2015 23:38:08 +0000

Some Yanmar models and other auxiliary engine makers also recomends to change the con-rod bolt each 20000 hours because them can suffer elongations

By: Narayan Pai

Narayan Pai — Sat, 07 Nov 2015 17:52:59 +0000

Perhaps by oversight, the importance of checking the piston gudgeon pin & the associated bushing during overhauls has been overlooked.

By: Bruce Lan

Bruce Lan — Sun, 19 Apr 2015 07:23:24 +0000

After installation you need further check side motion of connecting rod by a screwdriver. If can move freely, it will be ok. If can not move, it should be replaced by a new one.

By: Anish

Anish — Wed, 03 Dec 2014 08:01:03 +0000

In reply to madanan kadangot veedu. @ Madan: Yes, this method is adopted for yanmar and other makers too. It is used to check the trueness (straightness and bend) in the connecting rod and not for ovality. You have to use inside micrometer to check the ovality of the big end.