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Home >> Saturn >> 2010 >> Sky Red Line, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Automatic Transmission - 5L40-E/5L50-E - Description And Operation) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Overdrive Range, First Gear (Before First 1-2 Shift) >> Coast Clutch Applies

Coast Clutch Applies

WARNING: This page is about a different variant/trim than selected.
#5 Ball Check Valve

Forward clutch fluid seats the #5 ball check valve and passes through orifice #17 into the coast clutch feed circuit. This orifice helps to control coast clutch apply.

Safety Mode Valve

Before the first 1-2 shift has occurred, the safety mode valve (34)1 remains in the released position, allowing line fluid pressure to enter the line safety mode fluid circuit.

4-5 Shift Valve

Line safety mode fluid applies the 4-5 shift valve (374) against 4-5 shift valve spring (373) force. This allows coast clutch feed fluid to enter the coast clutch fluid circuit.

Coast Clutch Assembly

Coast clutch fluid is routed to the coast clutch piston to apply the coast clutch plates.

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