Drive Range - First Gear

Drive Range - First Gear:

DRIVE RANGE-FIRST GEAR

FORWARD CLUTCH - APPLIED
ROLLER CLUTCH - HOLDING

When the selector lever is moved to the Drive (D) position, the manual valve is repositioned to allow line pressure to enter the Drive passage. Drive oil then flows to the following:
1. Forward Clutch
2. Governor Assembly
3. 1-2 Shift Valve
4. 1-2 Accumulator Valve

BASIC CONTROL
Drive oil is directed to the forward clutch through an orifice where it acts on the clutch piston to apply the forward clutch. -

Drive oil is directed to the 1-2 shift valve.

Drive oil is directed to the 1-2 accumulator valve and is regulated to a pressure called 1-2 accumulator pressure; this pressure is directed to the 1-2 accumulator piston to act as a cushion for the band apply on a 1-2 shift.

Drive oil at the governor assembly is regulated to another variable pressure called governor pressure. Governor pressure increases with vehicle speed and acts against the 1-2 and 2-3 shift valves and the 3-2 control valve

SUMMARY
The converter is filled; She forward clutch is applied; the transmission is in Drive (D) Range - First Gear.