RTV Removal and Surface Preparation

NOTICE: If excessive RTV is applied, or oil builds up in the blind holes, the casting will crack when bolts are installed.






Surfaces to be sealed must be clean and dry. RTV is removed from aluminum surfaces using scrapers, wire brush or Scotch-Brite Pads and disk (AMP Clean-N Stripe 2 in. D x 1/2 in. W x 1/4 in. center hole).
The cylinder block, head and front cover holes must be cleaned with a 3/16 in. drill and tap handle. The front cover non tapped holes can be cleaned with a 3/8 in. drill.

NOTICE: Do not use petroleum cleaners such as mineral spirits; they leave a film onto which RTV will not stick.






1. After all RTV is removed, clean the surfaces with a chlorinated solvent, such as carburetor spray cleaner, brake clean or alcohol Saturn P/N and Scotch-Brite Pad.