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  #1  
Old 01-13-2017, 05:40 PM
Steve Melton's Avatar
Steve Melton Steve Melton is offline
 
Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 1,180
Default found oil on the floor, grounded

I had been weeping some oil at the front end and had contacted Superior with pictures but it was inconclusive until today. I walked into the hangar and found oil on the floor and more on the cowl. I am grounded.













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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 500+ for all

Simplicity is the art in design.
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  #2  
Old 01-13-2017, 05:50 PM
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sbalmos sbalmos is online now
 
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Location: Maineville, OH
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Default

Front crank seal?
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Scott Balmos
Cincinnati, OH
RV-9a slider - Started 1/12/12
N112SB reserved
IO-320 w/EFII and Catto 3-blade
Beringer brakes/wheels/tires
Dual G3X Touch (Stein's bankrupted me!)
Emp - DONE! (90%) (9 mos, 4 days)
Wings - DONE! (90%) (1 yr, 2 mos)
Fuselage - Almost Done
Finish - Engine Prep and misc
AT THE AIRPORT!!! (KHAO)
=VAF= 2016 paid up
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  #3  
Old 01-13-2017, 05:55 PM
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Steve Melton Steve Melton is offline
 
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Location: Cincinnati, OH
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Default

I don't know. There is also an o-ring on the constant speed prop. Suspect it is a front crank seal or the constant speed prop seal.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 500+ for all

Simplicity is the art in design.
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  #4  
Old 01-13-2017, 05:55 PM
DavidAhrens DavidAhrens is offline
 
Join Date: Feb 2007
Location: Bakersfield, CA
Posts: 36
Default Oil leak

Not good! Not trying to be funny but with that much oil leaking shouldn't be hard to find. Looks to be maybe Propeller to crankshaft area which in sealed via a O-ring. Also appears to be a Whirlwind Propeller?
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  #5  
Old 01-13-2017, 05:59 PM
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sbalmos sbalmos is online now
 
Join Date: Oct 2011
Location: Maineville, OH
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Default

I couldn't remember if you had a CS prop or not. I'm betting prop seal, based on how it was able to pool on the edge of the air intake of the cowl. Crank front seal is too far back, but was the only idea if the prop was FP.
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Scott Balmos
Cincinnati, OH
RV-9a slider - Started 1/12/12
N112SB reserved
IO-320 w/EFII and Catto 3-blade
Beringer brakes/wheels/tires
Dual G3X Touch (Stein's bankrupted me!)
Emp - DONE! (90%) (9 mos, 4 days)
Wings - DONE! (90%) (1 yr, 2 mos)
Fuselage - Almost Done
Finish - Engine Prep and misc
AT THE AIRPORT!!! (KHAO)
=VAF= 2016 paid up
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  #6  
Old 01-13-2017, 05:59 PM
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roadrunner20 roadrunner20 is offline
 
Join Date: Feb 2005
Location: Bay Pines, FL (based @ KCLW)
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Default

Looks like the crank seal. Check to see if there's oil pooling inside the ring gear hub.
I replaced my split crank seal on my superior io360 at about year 2. I'm now in year 10.5 without it leaking. I replaced it with a non-split variety.
It's fairly easy to replace as I was surprised how it stretched over the ring gear hub.I sealed it with pliobond as recommended by the lycoming manual.

Update: I have a fixed pitch prop
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Dan "RoadRunner" Landry
Morphed RV7, N20DL, PNP Pilot
1000+ hours, hit it enroute to Oshkosh
2017 Donation Paid

Last edited by roadrunner20 : 01-13-2017 at 09:09 PM.
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  #7  
Old 01-13-2017, 06:02 PM
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Steve Melton Steve Melton is offline
 
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Location: Cincinnati, OH
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Default

Quote:
Originally Posted by roadrunner20 View Post
Looks like the crank seal. Check to see if there's oil pooling inside the ring gear hub.
I replaced my split crank seal on my superior io360 at about year 2. I'm now in year 10.5 without it leaking. I replaced it with a non-split variety.
It's fairly easy to replace as I was surprised how it stretched over the ring gear hub.I sealed it with pliobond as recommened by the lycoming manual.
I saw oil inside the ring gear hub but not on the fwd side.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 500+ for all

Simplicity is the art in design.
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  #8  
Old 01-13-2017, 06:04 PM
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roadrunner20 roadrunner20 is offline
 
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Location: Bay Pines, FL (based @ KCLW)
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mine was on the aft side as viewed as in your last picture
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Dan "RoadRunner" Landry
Morphed RV7, N20DL, PNP Pilot
1000+ hours, hit it enroute to Oshkosh
2017 Donation Paid
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  #9  
Old 01-13-2017, 06:06 PM
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Steve Melton Steve Melton is offline
 
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Location: Cincinnati, OH
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Default

seems that I'll be replacing a front crank seal soon.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 500+ for all

Simplicity is the art in design.
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  #10  
Old 01-13-2017, 06:15 PM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 3,226
Default

If it is a crank seal, do check your crankcase vent......

have fun winding that spring...........
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