MANUAL CONVERTER LOCK-UP AND OVERDRIVE SOLENOID SWITCH OPERATION:84'-85'CHRYSLER 47RH TRANSMISSION
After much consultation with transmission builders I've installed these switches to lock and unlock the torque converter (only in 3rd & 4th gears) and shift in or out of 4th gear(overdrive). NOTE: YOU MUST BE CERTAIN THE CONVERTER SWITCH IS 'OFF'(UNLOCKED) BEFORE SHIFTING IN OR OUT OF 4th. GEAR. SO: IF YOU ARE 'LOCKED'(RED LIGHT) IN 3rd. AND WANT TO UPSHIFT TO 4th. - UNLOCK/UP-SHIFT/LOCK. SAME FOR DOWNSHIFTING OUT OF OVERDRIVE (4th) - UNLOCK/DOWN-SHIFT/LOCK. CAUTION: UNLOCK CONVERTER BEFORE COMING TO A STOP OR ENGINE WILL STALL. THIS TRANSMISSION UP/DOWN SHIFTS 1st.THROUGH 3rd. GEARS SAME AS THE 727 TRANSMISSION. ALSO: THE 47RH ONLY HAS LOCK-UP CONVERTER CAPACITY IN 3rd. & 4th. GEARS. WHEN USING THE PAC-BRAKE EXHAUST BRAKE THE CONVERTER MUST BE LOCKED TO BE EFFECTIVE.
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