Life limit on engine mounts?

alcladrv · #1 10-12-2015, 03:56 PM

Is there a life limit on the "Van's standard large cup Dynafocal engine mount" in either hours or years? Do the bolts need to retorqued regularly? It seems like my engine has sagged a little more each year. After 10 years and 1100 hrs., the sag is more noticeable than before.

Toobuilder · #2 10-12-2015, 05:04 PM

The bolts are torqued against a rigid spacer in between the rubber isolators, so it's unlikely that they will need a retorque unless there was excessive paint between the mounting surfaces.

There are inspection limits on the LORD website which provides acceptable/not acceptable sag.

Jesse · #3 10-13-2015, 07:31 AM

Are we talking about the welded engine mount or the rubber engine isolators? I assume the latter.

alcladrv · #4 10-14-2015, 05:02 AM

The engine isolators. Lord-type mounts.

kamikaze · #5 10-14-2015, 08:38 AM

"Van's standard large cup Dynafocal engine mount" is supposedly LORD brand according to the Van's catalog, so ...

For the LORD mounts, see here for the applicable limits (last page):

http://www.lord.com/Documents/Produc...alAviation.pdf