Dometic™ A&E 3108399.035U RV Awning Torsion Assembly - RH - BlackDometic A&E 3108399. 035U RV Awning Torsion Assembly RH Black This is a replacement torsion arm assembly for the Dometic A&E 8500 9000 Awning. The torsion assembly has a wound coil spring which provides tension on the roller tube to roll the awning up into the travel position. The right hand torsion end cap contains a cam assembly which prevents the awning from billowing or unrolling during travel. It also allows one person set up of the awning by