Fluid Pressure Directed in Preparation for a Shift to Fifth Gear
- 3-4 Shift Valve:
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345 fluid is routed through the 3-4 shift valve (345) into the 45 fluid circuit.
- #3 Ball Check Valve:
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45 fluid seats the #3 ball check valve and passes through orifice #27. This orifice helps to control overdrive clutch apply in fifth gear.
- 4-5 Shift Valve:
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45 fluid is routed to the 4-5 shift valve (374) where it is blocked by the valve in preparation for an upshift to fifth gear.