THRU BOLTS
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
-
derf62
- Posts: 91
- Joined: Wed Apr 24, 2002 4:07 pm
THRU BOLTS
I am receiving a number of different responses regarding the replacement of the thru bolts after splitting a case. Yes I know TMC states that upon O/H thru bolts must be replaced. Any input appreciated?
-
GAHorn
- Posts: 21290
- Joined: Fri Apr 12, 2002 8:45 pm
The reason bolts are torqued are in order to impart a "stretch" to them which assists them in properly fastening the item without exceeding the bolts' strength. If they've been in service for the life of an overhaul, they've received billions of pounding vibrations attempting to slide those case-halves against each other, and keeping those cylinders from blowing off their mounts.
It's not really a complete overhaul unless all the parts called for are replaced or re-certified. I'd replace them.
It's not really a complete overhaul unless all the parts called for are replaced or re-certified. I'd replace them.
Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.