Gearbox valves take the low-power signal from the gear lever switch and pass full line pressure to the shifting cylinders of the splitter and range groups. The group covers both the switch-type gearbox valve and the gearbox relay valve, which shortens the response by feeding the cylinder from a reservoir port close to it rather than through the length of the control line.
This category lists 5 Büyükdemir references cross-referenced against 15 original equipment numbers. The cross-reference tables cover Volvo parts.
Most looked-up references in this group: Relay Valve, gearbox 1-1105, Relay Valve, gearbox 1-1104, Relay Valve, gearbox 1-1106, Gearbox Valve (switch) 7-1203, Gearbox Valve (switch) 7-1202.
Manufactured by Büyükdemir Otomotiv in Istanbul, a producer of truck and trailer air system parts since 1957.
