For Models Equipped with the Master Control Valve A-5015 . . .
1. Air Supply (See schematic below.) With the gear shift lever in neutral, select LOW RANGE and loosen the connection at the “H” Port of control valve until it can be determined that AIR is supplied to valve. Reconnect air line.
If there is NO AIR, check for a restriction in the 1/8" O.D. air line between the control valve and
slave valve, making sure this line is connected to tee fitting at the Low Range or “L” Port of slave valve.
NOTE: ARROWS INDICATE DIRECTION OF AIR FLOW. SHADED AREAS INDICATE CHARGED LINES.