Low & Reverse Band Applies

WARNING: This page is about a different variant/trim than selected.

Manual Valve

Line pressure at the manual valve enters the Low fluid circuit. Line pressure is then routed to checkball #8.

#8 Checkball (Low)

Low fluid pressure unseats the #8 checkball, which is located in the valve body. This pressure then routes Low fluid to the 2-3 shift valve.

2-3 Shift Valve

Spring force hold the 2-3 shift valve in the downshifted position. Low fluid passes through the valve and Low fluid enters the Low feed circuit. Low feed passes through orifice #4, and Low feed enters the orificed Low feed circuit. Low feed is then routed to the 1-2 shift valve.

1-2 Shift Solenoid (SS) Valve

When the PCM energizes (turns ON) the 1-2 SS valve, high fluid pressure from the 1-2 SS valve builds at the end of the 1-2 shift valve. This causes the valve to downshift against spring force.

1-2 Shift Valve

Fluid pressure from the 1-2 SS valve holds the 1-2 shift valve in the downshifted position. The valve allows orificed Low feed to pass through the valve and enter the Low & Reverse band reduce circuit. Low & Reverse band reduce is then routed to checkball #6 and to the spring side of the Low & Reverse servo piston.

#6 Checkball (Low Reverse Band Apply and Reduce)

The #6 checkball is located in the valve body. The checkball is unseated by Low & Reverse reduce fluid. This allows fluid to enter the Low & Reverse band apply circuit. Low & Reverse band apply fluid is then routed to the Low & Reverse servo piston where the fluid actuates the piston and applies the Low & Reverse band assembly.