When high pressure fluid from the power steering pump enters a steering rack, it is routed through âspool valvesâ connected to the steering column. When the driver turns the steering wheel, the spool valves open ports that direct pressure to a hydraulic chamber around the rack.
Johnson is a surname of English origin. The name itself is a patronym of the given name John, literally meaning son of John.The name John derives from Latin Johannes, which is derived through Greek á¼°ÏÎ¬Î½Î½Î·Ï IÅannÄs from Hebrew ×××× × Yohanan, meaning Yahweh has favoured.he name itself is a patronym of the given name John, literally meaning son of John. The name John derives from Latin Johannes, which is derived through Greek á¼°ÏÎ¬Î½Î½Î·Ï IÅannÄs from Hebrew ×××× × Yohanan, meaning Yahweh has favoured.
Origin of the name Jackson: Transferred use of the surname which originated in 14th century England as a patronymic meaning son of Jack.. Short: Jack. Pet: Jackie, Jacky. From A World of Baby Names by Teresa Norman.rigin of the name Jackson: Transferred use of the surname which originated in 14th century England as a patronymic meaning son of Jack.. Short: Jack. Pet: Jackie, Jacky. From A World of Baby Names by Teresa Norman.