Overdrive Clutch Assembly

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Overdrive Clutch

For overdrive clutch operation, REFER to: Overdrive Clutch Assembly .

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to: Diagnostic Methods .

Condition	Possible Sources	Action
Overdrive clutch does not apply	SSD is mechanically stuck OFF, SSE is mechanically stuck ON	INSTALL a new solenoid. Refer to: Shift Solenoids (SS) .
	Clutch E regulator valve is stuck OFF	DISASSEMBLE, CLEAN and INSPECT the overdrive clutch regulator valve. If bore or valve is damaged, INSTALL a new main control. Refer to: Main Control Valve Body .
	CLE, Drive, VFS4, SS1, CLECF, CLEC 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 .
	Solenoid multiplex or drive enable valves stuck in applied position or springs broken	DISASSEMBLE, CLEAN and INSPECT the multiplex shift valve. If bore or valve is damaged, INSTALL a new main control valve body. Refer to: Main Control Valve Body .
	Ball valve 2 missing	INSPECT for missing ball valve. Refer to: Main Control Valve Body .
	Input shaft, input shaft Teflon™ seals, or intermediate shaft, Overdrive clutch piston seal leakage	Inspect input shaft Teflon seals. Refer to: Transmission .
	Overdrive clutch friction plates	DISASSEMBLE and INSPECT the overdrive clutch friction and steel plates. INSTALL new components as necessary. Refer to: Overdrive Clutch Assembly .
Overdrive clutch always applied	SSD is mechanically stuck OFF, SSE is mechanically stuck ON	INSTALL a new solenoid. Refer to: Shift Solenoids (SS) .
	Clutch E regulator valve is stuck OFF	DISASSEMBLE, CLEAN and INSPECT the overdrive clutch regulator valve. If bore or valve is damaged, INSTALL a new main control. Refer to: Main Control Valve Body .
	CLE, Drive, VFS4, SS1, CLECF, CLEC 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 .
	Solenoid multiplex or drive enable valves stuck in applied position or springs broken	DISASSEMBLE, CLEAN and INSPECT the multiplex shift valve. If bore or valve is damaged, INSTALL a new main control valve body. Refer to: Main Control Valve Body .
	Ball valve 2 missing	INSPECT for missing ball valve. Refer to: Main Control Valve Body .
-	Input shaft, input shaft Teflon™ seals, or intermediate shaft, Overdrive clutch piston seal leakage	Inspect input shaft Teflon seals. Refer to: Transmission .
-	Overdrive clutch friction plates	DISASSEMBLE and INSPECT the overdrive clutch friction and steel plates. INSTALL new components as necessary. Refer to: Transmission .
Overdrive clutch delayed/soft/slipping apply	SSD is mechanically stuck OFF, SSE is mechanically stuck ON	INSTALL a new solenoid. Refer to: Shift Solenoids (SS) .
	Clutch E regulator valve is stuck OFF	DISASSEMBLE, CLEAN and INSPECT the overdrive clutch regulator valve. If bore or valve is damaged, INSTALL a new main control. Refer to: Main Control Valve Body .
	CLE, Drive, VFS4, SS1, CLECF, CLEC 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 .
	Solenoid multiplex or drive enable valves stuck in applied position or springs broken	DISASSEMBLE, CLEAN and INSPECT the multiplex shift valve. If bore or valve is damaged, INSTALL a new main control valve body. Refer to: Main Control Valve Body .
	Ball valve 2 missing	INSPECT for missing ball valve. Refer to: Main Control Valve Body .
	Input shaft, input shaft Teflon™ seals, or intermediate shaft, Overdrive clutch piston seal leakage	Inspect input shaft Teflon seals. Refer to: Transmission .
	Overdrive clutch friction plates	DISASSEMBLE and INSPECT the overdrive clutch friction and steel plates. INSTALL new components as necessary. Refer to: Transmission .
Overdrive clutch harsh apply	SSD is mechanically stuck OFF, SSE is mechanically stuck ON	INSTALL a new solenoid. Refer to: Shift Solenoids (SS) .
	Clutch E regulator valve is stuck OFF	DISASSEMBLE, CLEAN and INSPECT the overdrive clutch regulator valve. If bore or valve is damaged, INSTALL a new main control. Refer to: Main Control Valve Body .
	CLE, Drive, VFS4, SS1, CLECF, CLEC 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 .
	Solenoid multiplex or drive enable valves stuck in applied position or springs broken	DISASSEMBLE, CLEAN and INSPECT the multiplex shift valve. If bore or valve is damaged, INSTALL a new main control valve body. Refer to: Main Control Valve Body .
	Ball valve 2 missing	INSPECT for missing ball valve. Refer to: Main Control Valve Body .
	Input shaft, input shaft Teflon™ seals, or intermediate shaft, Overdrive clutch piston seal leakage	Inspect input shaft Teflon seals. Refer to: Transmission .
-	Overdrive clutch friction plates	DISASSEMBLE and INSPECT the overdrive clutch friction and steel plates. INSTALL new components as necessary. Refer to: Transmission .