Overdrive Range, 3-2 Downshift

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During all full throttle downshifts, the engine manifold vacuum supply to the vacuum modulator (32) drops. This allows the modulator valve (34) to move and to increase the modulator pressure to the line boost valve (304). At the same time, the pump output increases through the higher engine speeds...

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Document Title: Overdrive Range, 3-2 Downshift

engine

vacuum

modulator

valve

pressure

line

boost

increases

higher

fluid

increased

regulator

clutch

downshift

input

order

shift

solenoid

passage

directed

manual

feed

checkball

third

exhaust

response

directs

located

modulator pressure

boost valve

pressure regulator

regulator valve

line pressure

manual downshift

downshift valve

solenoid valve

valve fluid

shift valve

pressure shift

input clutch

clutch feed

clutch passage

clutch fluid

third clutch

valve increases

checkball located

line boost valve

pressure regulator valve

manual downshift valve

shift solenoid valve

solenoid valve fluid

pressure shift valve

input clutch feed

clutch feed passage

passage shift valve

input clutch passage

valve moves response

valve increases line

increases line pressure

pressure shift solenoid

valve fluid shifts

fluid shifts manual

checkball located channel

located channel plate

checkball directs third

directs third clutch