Dodge Ram Truck 1500-2500-3500. Manual - part 1806
Line pressure on the 3-4 shift valve overcomes valve spring pressure moving the valve to the upshift posi- tion. This action exposes the feed passages to the 3-4 timing valve, 3-4 quick fill valve, 3-4 accumulator, and ultimately to the overdrive piston.
3-4 Shift Valve After Shift
21 - 1156
AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION