After disconnecting, and before reconnecting the quick disconnectsquick-disconnects of the main breaks, clean the hydraulic line quick disconnectquick-disconnect couplings and the quick disconnectquick-disconnect adapters on the shuttle valve with isopropyl alcohol. Before, reconnecting the couplings, look at the threads on both, the quick disconnectquick-disconnect coupling and the adapter to insure theyensure that they are in working condition, clean, dry (no alcohol still present), and verify thethat the hydraulic hoses are in good condition. Install the hoses per the EMB-145 AMM. Then, verify thethat spacers (A) & (B) are properly installed per the EMB-145 AMM and that the temp sensor wires and hydraulic lines are not touching the tires or wheels.