In the Allison MT series, the converter working pressure is set at approximately __________.

In the Allison MT series, the converter working pressure is set at approximately __________.

• A. 52 psi (359 kPa)
• B. 130 psi (896 kPa)
• C. 10 psi (69 kPa)
• D. 40 psi (276 kPa)

Answer: (A)

Torque converter working pressure is the hydraulic pressure available in the converter circuit that powers the torque transfer and lubrication. For the Allison MT series, this converter supply pressure is specified at about 52 psi (roughly 359 kPa). This level provides enough flow to fill and lubricate the converter and to feed the hydraulic components without causing excess heat or undue stress. Pressures much higher, like 130 psi, would oversupply the circuit and raise heat and wear; too low, like 10 psi, wouldn’t provide adequate lubrication or actuation; 40 psi is below the typical spec. So about 52 psi is the correct approximate converter working pressure for the MT series.

Torque converter working pressure is the hydraulic pressure available in the converter circuit that powers the torque transfer and lubrication. For the Allison MT series, this converter supply pressure is specified at about 52 psi (roughly 359 kPa). This level provides enough flow to fill and lubricate the converter and to feed the hydraulic components without causing excess heat or undue stress. Pressures much higher, like 130 psi, would oversupply the circuit and raise heat and wear; too low, like 10 psi, wouldn’t provide adequate lubrication or actuation; 40 psi is below the typical spec. So about 52 psi is the correct approximate converter working pressure for the MT series.