Forward Clutch System

WARNING: This page is about a different variant/trim than selected.

For forward (1, 2, 3, 4) clutch operation, refer to Hydraulic System - 6F35 or Mechanical System - 6F35 .

Courtesy of FORD MOTOR COMPANY

Item	Part Number	Description
1	7005	Transmission case
2	7L328	Center support
3	7A262	Forward clutch piston
4	7B070	Forward clutch piston return spring
5	7H365	Forward clutch piston return spring snap ring
6	7B070	Forward clutch wave spring
7	7B164	Forward (1, 2, 3, 4) clutch
8	7B066	Forward clutch pressure plate
9	7D483	Forward clutch snap ring
10	7A019	Front sun gear and shell assembly

Forward Clutch

Condition	Possible Sources	Action
Forward (1, 2, 3, 4) clutch does not apply	Solenoid filter blocked to SSA	CLEAN or REPLACE the solenoid body filter screen. REFER to Main Control - Overhaul .
SSA mechanically stuck OFF		INSTALL a new SSA. REFER to Solenoids .
Forward (1, 2, 3, 4) clutch regulator valve stuck OFF		DISASSEMBLE, CLEAN and INSPECT the forward (1, 2, 3, 4) clutch regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to Main Control - Overhaul .
SSA SIG, CB1234, CB1234 SUP hydraulic circuits blocked/leaking		DISASSEMBLE and INSPECT the main control and separator plate passages for debris/blockage. CLEAN as necessary. REFER to Hydraulic System - 6F35 .
CB1234 seal leaking		REMOVE the main control, REFER to Main Control - Overhaul . INSPECT the CB1234 circuit seal between the main control valve body and the transmission case for missing or damaged seal. INSTALL a new seal. REFER to Main Control - Overhaul .
Front planetary sun gear and shell assembly		INSPECT the sun gear and shell for wear and damage. INSTALL new components as necessary, REFER to Transmission - Overhaul .
Low OWC snap ring		INSPECT the low OWC snap ring for proper seating in case. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch steel plate		DISASSEMBLE and INSPECT the forward (1, 2, 3, 4) clutch steel plates. INSTALL new components as necessary. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch friction plates		DISASSEMBLE and INSPECT the forward (1, 2, 3, 4) clutch friction and steel plates. INSTALL new components as necessary. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch piston seal leakage.		INSTALL a new forward (1, 2, 3, 4) clutch piston. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch always applied	Solenoid filter or seal damaged at SSA	REFER to Main Control - Overhaul .
SSA mechanically stuck ON		INSTALL a new SSA. REFER to Solenoids .
Forward (1, 2, 3, 4) clutch regulator valve stuck ON		DISASSEMBLE, CLEAN and INSPECT the forward (1, 2, 3, 4) clutch regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to Main Control Valve Body .
SSA SIG, CB1234, CB1234 SUP hydraulic circuits blocked/leaking		DISASSEMBLE and INSPECT the main control valve body and separator plate passages for leakage. INSPECT the CB1234 circuit seal between the main control valve body and the transmission case for missing or damaged seal. INSTALL a new seal. REFER to Hydraulic System - 6F35 .
Front planetary sun gear and shell assembly		INSPECT the sun gear and shell for wear and damage. INSTALL new components as necessary, REFER to Transmission - Overhaul .
Forward (1, 2, 3, 4) clutch friction plates		DISASSEMBLE and INSPECT the forward (1, 2, 3, 4) clutch friction and steel plates. INSTALL new components as necessary. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch piston return spring		INSPECT the return spring for proper installation and damage. INSTALL new components as necessary. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch delayed/soft/slipping apply	Incorrect Solenoid Body Strategy programmed into TCM	REFER to Solenoid Body Strategy Download .
Solenoid filter or seal damaged at SSA		REFER to Main Control - Overhaul .
SSA mechanically sticking		INSTALL a new SSA. REFER to Solenoids .
Forward (1, 2, 3, 4) clutch regulator valve sticking		DISASSEMBLE, CLEAN and INSPECT the forward (1, 2, 3, 4) clutch regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch boost valve stuck ON		DISASSEMBLE, CLEAN and INSPECT the forward (1, 2, 3, 4) clutch boost valve and bias spring. If bore, valve or spring is damaged, INSTALL a new main control valve body. REFER to Main Control Valve Body .
SSA SIG, CB1234, CB1234 SUP hydraulic circuits blocked/leaking		DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris/blockage. INSPECT the CB1234 circuit seal between the main control valve body and the transmission case for missing or damaged seal. INSTALL a new seal. REFER to Hydraulic System - 6F35 .
CB1234 seal leaking		REMOVE the main control valve body, REFER to Main Control Valve Body . INSPECT the CB1234 circuit seal between the main control valve body and the transmission case for missing or damaged seal. INSTALL a new seal. REFER to Main Control Valve Body .
Low OWC		INSPECT the low OWC. INSTALL a new low OWC as necessary. REFER to Transmission - Overhaul .
Forward (1, 2, 3, 4) clutch pressure plate		DISASSEMBLE and INSPECT the forward (1, 2, 3, 4) clutch pressure plate. INSTALL new components as necessary. REFER to Transmission - Overhaul .
Forward (1, 2, 3, 4) clutch friction plates		DISASSEMBLE and INSPECT the forward (1, 2, 3, 4) clutch friction and steel plates. INSTALL new components as necessary. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch piston return spring		INSPECT the return spring for proper installation and damage. INSTALL new components as necessary. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch harsh apply	Incorrect Solenoid Body Strategy programmed into TCM	REFER to Solenoid Body Strategy Download .
SSA mechanically sticking		INSTALL a new SSA. REFER to Solenoids .
Forward (1, 2, 3, 4) clutch regulator valve sticking		DISASSEMBLE, CLEAN and INSPECT the forward (1, 2, 3, 4) clutch regulator valve and bias spring. If bore, valve or spring is damaged, INSTALL a new main control valve body. REFER to Main Control Valve Body .
Forward (1, 2, 3, 4) clutch boost valve sticking		DISASSEMBLE, CLEAN and INSPECT the forward (1, 2, 3, 4) clutch boost valve and bias spring. If bore, valve or spring is damaged, INSTALL a new main control valve body. REFER to Main Control Valve Body .
SSA SIG, CB1234, CB1234 SUP hydraulic circuits blocked/leaking		DISASSEMBLE and INSPECT the main control and separator plate passages for leakage. INSPECT CB1234 check ball for blocked passage. CLEAN as necessary. REFER to Hydraulic System - 6F35 .
Forward (1, 2, 3, 4) clutch piston return spring		INSPECT the return spring for proper installation and damage. INSTALL new components as necessary. REFER to Mechanical System - 6F35 .
Forward (1, 2, 3, 4) clutch friction plates		DISASSEMBLE and INSPECT the forward (1, 2, 3, 4) clutch friction and steel plates. INSTALL new components as necessary. REFER to Mechanical System - 6F35 .