September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
OE end plugs are designed to prevent critical pressure loss by capping the bore, while also functioning as a spring or valve stop. Repetitive spring motion, valve impact and fluid pressure variations cause wear between the end plug and bore mating surface, allowing vital pressure to escape the circuit.
Valve bodies in Ford and GM listed transmissions have end plugs at the various clutch regulator valve bores which are susceptible to this wear. When actuator/solenoid feed pressure is allowed to leak due to plug deterioration, various shift concerns and burnt clutches will result in the affected circuit. Wear at the TCC regulator and clutch bypass valve end plugs allows valuable oil loss that leads to drivability concerns. Eliminate leaks and restore hydraulic integrity by installing Sonnax O-ringed end plug kit 124740-02K.
|ID||Ford 6F50, 6F55 Locations||GM 6T70 (Gen. 1) 6T70 (Gen. 2), 6T75 (Gen. 1), 6T75 (Gen. 2), 6T80 (Gen. 2) Locations|
|1||Pressure Regulator Valve||Pressure Regulator Valve|
|2||Isolator Valve||Isolator Valve|
|3||Multiplex Manual Valve||Clutch Select Solenoid Valve #3|
|4||Multiplex Shift Valve||Clutch Select Solenoid Valve #2|
|5||Direct Clutch Regulator Valve||3-5 Reverse Clutch Regulator Valve|
|6||Intermediate Clutch Regulator & Gain Valve||2-6 Clutch Regulator & Gain Valve|
|7||TCC Regulator Apply Valve||TCC Regulator Apply Valve|
|8||L/R Overdrive Clutch Regulator Valve||L/R 4-5-6 Clutch Regulator Valve|
|9*||Forward Clutch Regulator Valve||1-2-3-4 Clutch Regulator Valve|
* O-Ringed end plug should not be used on later 6F50/6F55 applications without short shuttle valve, and that has long (approximately .940") end plug.Learn More About Zip Valve™ Drop-In Repairs
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
September 30, 2005
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Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.