FrankK90989
Well Known Member
Yesterday I removed the top half of my cowl to install a oil cooler cover plate. When the task was complete a quick inspect over the top of this O-320
found a small oil slick near the #3 push rod shroud seal. I noticed that the tube had backed away from the case a small amount (more green seal exposed than it neighbors).
Removed the box cover to see what gives and found the shroud tube spring failed --AKA "push rod tube spring holdenin thingy".
Dug one of the old ones I had in my box of saved parts and found that the original part is made .05" thicker, .035 vs .030.
Spy glass inspection reveals a small imperfection near the break. I think the falure was a manufacture defect, notice the sharp press marks in the photo, the original part is better made, and I will reuse it.
found a small oil slick near the #3 push rod shroud seal. I noticed that the tube had backed away from the case a small amount (more green seal exposed than it neighbors).
Removed the box cover to see what gives and found the shroud tube spring failed --AKA "push rod tube spring holdenin thingy".
Dug one of the old ones I had in my box of saved parts and found that the original part is made .05" thicker, .035 vs .030.
Spy glass inspection reveals a small imperfection near the break. I think the falure was a manufacture defect, notice the sharp press marks in the photo, the original part is better made, and I will reuse it.
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