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Home >> Lincoln >> 2019 >> Nautilus Base, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission - 8-Speed Automatic Transmission - 8F57 (2 Of 2)) >> Diagnosis And Testing >> A Clutch

A Clutch

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Symptom Chart 

A clutch 

For A clutch operation, REFER to: A Clutch .

A clutch 

Condition Possible Sources Action
A clutch does not apply SSA is mechanically stuck off INSTALL a new solenoid. REFER to: Solenoid (307-01D).
A clutch control valve stuck off DISASSEMBLE, CLEAN and INSPECT the clutch control valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01D).
A CL CONTR, hydraulic circuit blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. CLEAN as necessary. REFER to: Main Control Valve Body (307-01D).
A clutch piston seals INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01D).
A clutch hub / Output sun gear INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01D).
A clutch friction plates INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01D).
A clutch always applied SSA mechanically stuck INSTALL a new solenoid. REFER to: Solenoid (307-01D).
A clutch control valve stuck on DISASSEMBLE, CLEAN and INSPECT the clutch control valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01D).
A CL CONTR, hydraulic circuit cross leaks DISASSEMBLE and INSPECT the main control valve body and separator plate passages for leaks or damage. INSTALL new components as necessary. REFER to: Main Control Valve Body (307-01D).
A clutch friction plates INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01D).
A clutch delayed/soft/slipping apply Incorrect transmission strategy programmed into PCM/ TCM. PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download (307-01D).
Low line pressure PERFORM line pressure test. REFER to: Special Testing Procedures  .
SSA mechanically sticking INSTALL a new solenoid. REFER to: Solenoid (307-01D).
A clutch control valve sticking DISASSEMBLE, CLEAN and INSPECT the valves. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01D).
A CL CONTR, hydraulic circuits blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. CLEAN as necessary. REFER to: Main Control Valve Body (307-01D).
A clutch piston seals INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01D).
A clutch friction plates INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01D).
A clutch harsh apply Incorrect transmission strategy programmed into PCM/ TCM. PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download (307-01D).
High line pressure PERFORM the line pressure test. REFER to: Special Testing Procedures  .
SSA mechanically sticking INSTALL a new solenoid. REFER to: Solenoid (307-01D).
A clutch control valve sticking DISASSEMBLE, CLEAN and INSPECT the valves. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body (307-01D).
A CL CONTR hydraulic circuit blocked/leaking DISASSEMBLE and INSPECT the main control valve body and separator plate passages for leaks or damage. INSTALL new components as necessary. REFER to: Main Control Valve Body (307-01D).
A clutch friction plates INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01D).
A clutch piston return springs INSPECT the components for wear and damage. INSTALL new components as necessary. REFER to: Transmission (307-01D).