Coolant Recovery System

This system uses a 110 kPa (16 psi) radiator pressure cap and a plastic reservoir and hose. When the coolant in the radiator expands to the overflow point, it passes through the radiator pressure cap and into the plastic reservoir. When the coolant in the radiator cools down and contracts, it pulls coolant from the reservoir through a vacuum relief valve in the radiator pressure cap, back into the radiator.

The advantages of the system are the extra coolant carried in the expansion tank and the fact that any air bubbles trapped in the cooling system are vented in the plastic reservoir, rather than causing excessive aeration of the coolant.

Standard and extra-cooling radiators are installed in production, but service replacement radiators are of the extra cooling type.

 WARNING: NEVER REMOVE THE RADIATOR PRESSURE CAP UNDER ANY CONDITIONS WHILE THE ENGINE IS OPERATING. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN DAMAGE TO THE COOLING SYSTEM OR ENGINE AND/OR PERSONAL INJURY. TO AVOID HAVING SCALDING HOT COOLANT OR STEAM BLOW OUT OF THE RADIATOR, USE EXTREME CARE WHEN REMOVING THE CAP FROM A HOT RADIATOR. WAIT UNTIL THE ENGINE HAS COOLED, THEN WRAP A THICK CLOTH AROUND THE RADIATOR PRESSURE CAP AND TURN IT SLOWLY TO THE FIRST STOP. STEP BACK WHILE THE PRESSURE IS RELEASED FROM THE COOLING SYSTEM. WHEN CERTAIN ALL THE PRESSURE HAS BEEN RELEASED, PRESS DOWN ON THE CAP (STILL WITH A CLOTH), TURN AND REMOVE IT.