After removing the m/c in my '72 240, I noticed what looked like white lithium grease inside the booster (where the m/c attaches). Do I need to lube the inside of the booster before putting in the new m/c? with what? How clean should the booster interior be?

thanks for the help

Bill

Bill, I think the grease is for the contact between the rod in the booster and the piston in the M/C. You want a grease that wont attack rubber. Just wipe out any large particles before you attach the M/C.

I use Lubriplate #105 Motor assembly grease. Its anti-wear, anti-seize and excellent for hinges, locks and latches.

Chris