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glennwil · 11-04-2015, 07:38 PM

This is a OS 55HZ and as you can see the chip in the skirt should I replace it or will it be ok. My next question is what would have caused it to break off?

dchekas · 11-05-2015, 06:36 AM

Did you use an engine crank lock tool to tighten your fan hub on to the crank shaft?

I've seen the skirt become damaged when guys use the crank shaft locking tool with the piston at BDC. The skirt gets pressed against the crank shaft locking tool and gets damaged as your tightening the nut. Piston needs to be TDC when using the tool.

msallua · 11-05-2015, 06:55 AM

Hi Darrick, what means BDC and TDC ?

Thanks

Rodney Kirstine · 11-05-2015, 09:11 AM

Bottom Dead Center and Top Dead Center.

glennwil · 11-05-2015, 08:01 PM

Took the engine apart to check bearings and discovered the chip in skirt,had lots of movement in piston pin so I have decided to change piston,ring,pin and clips also. I never use a locking tool on it don't know how it got broke.

11-04-2015, 07:38 PM	#1 (permalink)
glennwil Registered Users Join Date: Feb 2010	Piston skirt This is a OS 55HZ and as you can see the chip in the skirt should I replace it or will it be ok. My next question is what would have caused it to break off? Attached Thumbnails

11-05-2015, 06:36 AM	#2 (permalink)
dchekas Registered Users My HF Map location Join Date: Sep 2006	Did you use an engine crank lock tool to tighten your fan hub on to the crank shaft? I've seen the skirt become damaged when guys use the crank shaft locking tool with the piston at BDC. The skirt gets pressed against the crank shaft locking tool and gets damaged as your tightening the nut. Piston needs to be TDC when using the tool. __________________ Team Align Enterprise Hobby Facebook Align Part Finder YouTube Channel

11-05-2015, 06:55 AM	#3 (permalink)
msallua Registered Users Join Date: Nov 2010 Location: Doral, Florida, USA	Hi Darrick, what means BDC and TDC ? Thanks __________________ Align 800e PRO DFC // KRAKEN Yellow // RAW Nitro // Align 700N DFC // RAW Yellow // 2x Goblin 420 // RAW 420 // RealFlight 7.5 // neXt // AccuRc // Tribunus - Vbar Control Touch - Vbar Neo

11-05-2015, 09:11 AM	#4 (permalink)
Rodney Kirstine Registered Users Join Date: Mar 2012	Bottom Dead Center and Top Dead Center. __________________ Team Synergy Field Rep, Rail Blades

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11-05-2015, 08:01 PM	#5 (permalink)
glennwil Registered Users Thread Starter Join Date: Feb 2010	Took the engine apart to check bearings and discovered the chip in skirt,had lots of movement in piston pin so I have decided to change piston,ring,pin and clips also. I never use a locking tool on it don't know how it got broke.

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