Answer to Question 1
Contaminated refrigerant should be recovered into an empty recovery cylinder marked Contaminated to keep it from contaminating other relatively clean recovered refrigerant. Charges for destroying contaminated refrigerant can become expensive.
Answer to Question 2
You should always use two wrenches: one for a backup wrench to hold the part that should not turn, and the other to do the turning. Always use correct fitting, properly sized wrenches. Fixed wrenches are preferable to adjustable wrenches. Pliers, vise grips, robo grips, and channel locks should not even be considered.
Cutaway diagram of a four cylinder gasoline engine
Three bonds separate sequential α carbons in a polypeptide chain
The world attempted to deal with Somalia as if it were a real country but painfully learned that Som
Heavy fuel droplets separate as they flow around an abrupt bend in an intake manifold.
The exhaust gases are pushed out of the cylinder by the piston on the exhaust stroke.
In this design, the fuel injector is at the top of the cylinder and sprays fuel into the cavity of ...