RTLO-xx610 Model Range Cylinder Assembly

Note: This is the Old design

LO Range - When the shift lever is moved laterally from 7th to 6th gear, air is supplied to the range cylinder housing port (1), moving the piston rearward, engaging LO range gearing (2).

HI Range - When the shift lever is moved laterally from 6th to 7th gear, no air is supplied to the range cylinder housing port (1), moving the piston forward, engaging HI range gearing (2).

Insert Valves

The insert valves are a self-contained 1-1/2" valve assembly located in the range cylinder cover. It cannot be disassembled except for the three (3) o-rings on the outer diameter. The o-rings provide a stationary seal and do not move in the cylinder.

Insert valve piston travel is only 1/16". When air is applied to the valve piston top side, one piston moves down sealing off the constant air supplied from the air filter/regulator, the other piston allows the constant air supplied from the air filter/regulator to pass freely through the insert valve, to the cylinder piston front side, moving the yoke bar rearward to engage the LO range gearing.

When no air is applied to the signal line, the piston moves up allowing the constant air supplied from the air filter/regulator to pass freely through one insert valve to the piston back side, moving the yoke bar forward to engage HI range gearing and sealing off the constant air from the air filter/regulator to allow the air from the piston front side to exhaust.

LO Range

Constant Air from Air Valve

Constant air sealed off at this point Constant Air from Air Filter/Regulator

Exhaust from HI Side of Cylinder To piston front Yoke bar rearward

HI Range

No Air on Signal Line

Constant Air from Air Filter/ Regulator Constant Air from Air Filter/Regulator

To piston back side, Yoke bar forward Exhaust from LO side of Cylinder