Use clean fluid to make the grommets (6) slippery and then place them in the cylinder body with your finger, not your wrench, as they could be cut or torn. After that, place the reservoir (2) in the grommets (6) and rock it back and forth while pressing down, helping it seat well. After that, attach the reservoir mounting bolt (5) to the master cylinder (4) and fasten the electrical connector to the fluid reservoir level switch (3). Once finished, pull out the prop rod and flush and fill the base brake system.