telescope pipe

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tianyayouzidu
Bilge Dweller
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Joined: Sat Oct 04, 2008 6:59 pm

telescope pipe

Post by tianyayouzidu »

Dear friend,

Good day,

I want to ask a question about MAN B&W engine.

Some engineers do not take out telescope pipe, when they overhaul the piston, what you think about it, why should it be taken out?

Thank you in advance!


best regards
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carbob
Leak Patrol
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Joined: Tue Nov 13, 2007 5:41 am
Currently located: St. John's, NL

Re: telescope pipe

Post by carbob »

Hi.

I work with a plant of 2 - 7S50MC B&W, Korean-built, engines and the manual states to always hang the telescopic pipe prior to turning the engine with a piston removed. The only reason I can see is to prevent any damage in case the crosshead inadvertantly rotates when the engine is turned. It`s only 4 bolts, so not a big deal anyway, unless you drop the spacer in the sump and have to go look for it!!

Hope this helps.

All the best.
HandyAndy
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Joined: Thu Nov 27, 2008 8:42 am
Currently located: UK
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Re: telescope pipe

Post by HandyAndy »

Hi,

carbob is perfectly correct; if the Telescopic Pipe is left in situ & the engine is turned then there is a possibility that the Crosshead will try to turn & will bend the pipe. In a worse-case scenario this can cause local overheating & crankcase explosion if it is not rectified.

I hope this helps
fever9ii
First Time Poster
Posts: 1
Joined: Sun Oct 25, 2009 2:40 pm

Re: telescope pipe

Post by fever9ii »

true ,telescopic pipe needs to be suspended with piston out...but other way to go about it is by not turning engine post lifting piston...possible cos i hav a done a decab that way
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