Forward Clutch
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.
For forward clutch operation, REFER to: Forward Clutch Assembly .
| Forward clutch does not apply | SSA mechanically stuck OFF | INSTALL a new solenoid. Refer to: Shift Solenoids (SS) . |
|---|---|---|
| Main control to pump seal | INSPECT seal for damage / missing. INSTALL new components necessary. Refer to: Main Control Valve Body . | |
| Forward (1, 2, 3, 4) clutch regulator valve stuck OFF | DISASSEMBLE, CLEAN and INSPECT the forward clutch regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. Refer to: Main Control Valve Body . | |
| D432, FCPF, SF, PC1, PC1Z, C1234, C1234FB and hydraulic circuits blocked/leaking. PC1 Solenoid damper missing/damaged | DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage/leaks. CLEAN as necessary. Refer to: Main Control Valve Body . | |
| C1234 hydraulic passage in pump blocked or leaking, pump Teflon seals leaking. | INSPECT components for blockage and damage. CLEAN and/or INSTALL new components necessary. Refer to: Transmission . | |
| Forward clutch friction plates, | INSPECT components wear and damage. CLEAN and/or INSTALL new components necessary. Refer to: Transmission . | |
| Forward clutch piston seals | INSPECT the seals for wear and damage. INSTALL new seals. Refer to: Transmission . | |
| Forward clutch always applied | SSA mechanically stuck ON | INSTALL a new solenoid. Refer to: Shift Solenoids (SS) . |
| Forward (1, 2, 3, 4) clutch regulator valve stuck ON | DISASSEMBLE, CLEAN and INSPECT the regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. Refer to: Main Control Valve Body . | |
| Main control cross leaking in to PC1, PC1Z, and C1234 hydraulic circuits, | DISASSEMBLE and INSPECT the main control valve body and separator plate passages for cracks, warping, and damage. If damage is found, INSTALL a new main control valve body. Refer to: Main Control Valve Body . | |
| Forward clutch friction plates | INSPECT components wear and damage. CLEAN and/or INSTALL new components necessary. Refer to: Transmission . | |
| Forward clutch delayed/soft/slipping apply | Incorrect transmission strategy programmed into PCM. | PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download . |
| SSA mechanically sticking | INSTALL a new solenoid. Refer to: Shift Solenoids (SS) . | |
| Main control to pump seal | INSPECT seal for damage / missing. INSTALL new components necessary. Refer to: Main Control Valve Body . | |
| Forward (1, 2, 3, 4) clutch regulator or latch valve sticking | DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. CLEAN as necessary. Refer to: Main Control Valve Body . | |
| D432, FCPF, SF, PC1, PC1Z, C1234, and C1234FB hydraulic circuits blocked/leaking. PC1 solenoid damper missing/damaged | DISASSEMBLE and INSPECT the transmission passages for debris/blockage/leaks. CLEAN as necessary. Refer to: Transmission . | |
| C1234 hydraulic passage in pump blocked or leaking, pump Teflon seals leaking | DISASSEMBLE and INSPECT the transmission passages for debris/blockage/leaks. CLEAN as necessary. Refer to: Main Control Valve Body . | |
| Forward clutch friction plates | INSPECT components wear and damage. INSTALL new components necessary. Refer to: Transmission . | |
| Forward clutch piston seals | INSPECT the seals for damage. INSTALL new seals. Refer to: Transmission . | |
| Forward clutch harsh apply | Incorrect transmission strategy programmed into PCM. | PERFORM the Transmission Strategy Download. Refer to: Transmission Strategy Download . |
| SSA mechanically sticking | INSTALL a new solenoid. Refer to: Shift Solenoids (SS) . | |
| Forward (1, 2, 3, 4) clutch regulator or latch valve stuck ON, broken regulator or latch valve spring. | DISASSEMBLE, CLEAN and INSPECT the valves and springs. If bore, valve, or spring is damaged, INSTALL a new main control valve body. Refer to: Main Control Valve Body . | |
| Main control cross leaking in to PC1, PC1Z, and C1234 hydraulic circuits, | DISASSEMBLE and INSPECT the main control valve body and separator plate passages for cracks, warping, and damage. If damage is found, INSTALL a new main control valve body. Refer to: Main Control Valve Body . | |
| - | Forward clutch friction plates or piston seals | INSPECT components for wear and damage. INSTALL new components necessary. Refer to: Transmission . |
| - | Forward clutch piston return spring | INSPECT the spring for damage. INSTALL new components necessary. Refer to: Transmission . |