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Contributor

Re: Breaking Valve & goes inside of G3520C

This is 2 breake valve in 2 genset's ,

& This beakege of  exhust valves

1.jpg

 

 

&

Another comparision between intake valve & exhaust valve

we dont know problem upside of our inlet valve we have very deposit.

please explain us, is this normal in 2000 hour after starting or not?

2.jpg

Contributor

Re: Breaking Valve & goes inside of G3520C

Dear Mr. AHMED We need some more info about your adjustment of your two Genset, I wish have your email address,or Skype ID, Please Send me to mahdzaman@yahoo.com Best Regards, M.Zamani
Contributor

Re: Breaking Valve & goes inside of G3520C

Dear Friend,

Obviously you will notice water/oil in the exhaust manifold, because once seat insert is broken coolant will enter in to combustion area.Engine oil will be contaminated with coolant.

You need to inspect following

1.Cylinder head require replacement.

2.Piston & liner require replacement.

3.Con rod bearing require replacement.

4.Complete inspection of exhaust manifold, remove debris.

5.Turbocharger nozzle ring inspection, turbine blade inspection for any damages.

6.Engine oil & oil filters require replacement.

Regards,

Erfan

 

Contributor

Re: Breaking Valve & goes inside of G3520C

Dear Mr. AHMED Thanks for your reply. did you see oil & water inside manifold on your Genset After beaking valve? another question, after your Genset shutdown & change part , did you have any procedure for rerunning of that's? if' yes please inform us Mr. Ahmed. Best Regard's
Contributor

Re: Breaking Valve & goes inside of G3520C

Dear Friend,

I am from India, we operate 21.5 MW gas based power plant Nagapattinam,Tamilnadu.Valve break at stem is very common problem in CAT 3520,3516 and other similar series engines. we have two CAT 3520 Engines and both have run more than 72000 hours of operation. we have experienced valve breaks few times on both engines, recenetly few days back due to valve break, extensive damage was happened to Piton, liner and cylinder head was copletely distorted, fortunately turbocharger was affected.

 

Unfortunately CAT dealer GMMCO denies such failures in other part of world, they say such failures happening only on our engines.

 

Regards,

Irfan Ahmed

Plant Manager

KVK Energy Pvt Ltd 

 

Contributor

Breaking Valve & goes inside of G3520C

Dear Sirs Our power plant is insalled base on Genset type: G3520c GZN series , Last week One of our Gensets shutdown for low exhaust after inspection same cylinder low compression & then open of cylinder head , we saw eadge of Air VALVE is break & therfore piston is cutted, 2 day's later another genset of G3520c shut down for detonation, after inspection we saw water goes to air manifold & inside Crankcase,so we opened cylinder - same problem & 1 valve of inlet & 1 valve outlet cutted from neck of valve, next day same like second genset we stop & oil & water goes to inside crankcase & inlet manifold, WE ARE on 2500 hour, last chage oil is 800 hour we supply coolant by GRANDFOUS pump with pressure about 3.9 bar , inlet coolant is 76 degree. PLEASE HELP US REASON OF OUR DAMAGES.