Forward Clutch System

For forward (1, 2, 3, 4) clutch operation, REFER to Hydraulic System or Mechanical System .

Courtesy of FORD MOTOR COMPANY

Item	Part Number	Description
1	7D483	Low OWC snap ring
2	7A089	Low OWC
3	7B164	Forward clutch friction plates
4	7B442	Forward clutch steel plates
5	7B070	Forward clutch waved cushion spring
6	7H365	Forward clutch piston snap ring
7	7B070	Forward clutch piston return spring
8	7A262	Forward clutch piston
9	7D064	Front sun gear and shell assembly
10	7005	Transmission case

Forward Clutch

Condition	Possible Sources	Action
Forward (1, 2, 3, 4) clutch does not apply	Solenoid body filter blocked to SSA	CLEAN or INSTALL a new solenoid body filter screen. REFER to Solenoid Body Assembly .
SSA mechanically stuck OFF		INSTALL a new solenoid body. REFER to Solenoid Body Assembly . Download the new Solenoid Body Strategy into the PCM, REFER to Solenoid Body Strategy Download .
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 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. CLEAN as necessary. REFER to Hydraulic System .
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 .
Front planetary sun gear and shell assembly		INSPECT the sun gear and shell for wear and damage. INSTALL new components as necessary, REFER to Mechanical System .
Low OWC snap ring		INSPECT the low OWC snap ring for proper seating in case. REFER to Mechanical System .
Low OWC /Forward (1, 2, 3, 4) clutch steel plate		INSPECT the low OWC /Forward (1, 2, 3, 4) clutch steel plate surface. INSTALL a new low OWC as necessary. REFER to Mechanical System .
Low OWC /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 .
Forward (1, 2, 3, 4) clutch piston seal leakage.		INSTALL a new forward (1, 2, 3, 4) clutch piston. REFER to Mechanical System .
Forward (1, 2, 3, 4) clutch always applied	Solenoid body filter seal damaged at SSA	INSTALL a new solenoid body filter screen. REFER to Solenoid Body Assembly .
SSA mechanically stuck ON		INSTALL a new solenoid body. REFER to Solenoid Body Assembly . Download the new Solenoid Body Strategy into the PCM, REFER to Solenoid Body Strategy Download .
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 check ball for blocked passage. CLEAN as necessary. REFER to Hydraulic System .
Front planetary sun gear and shell assembly		INSPECT the sun gear and shell for damage that would prevent free rotation. INSTALL new components as necessary, REFER to Mechanical System
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 .
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 .
Forward (1, 2, 3, 4) clutch delayed/soft/slipping apply	Incorrect Solenoid Body Strategy programmed into PCM	REFER to Solenoid Body Strategy Download .
Solenoid body filter seal damaged at SSA		INSTALL a new solenoid body filter screen. REFER to Solenoid Body Assembly .
SSA mechanically sticking		INSTALL a new solenoid body. REFER to Solenoid Body Assembly . Perform the Solenoid Body Strategy, REFER to Solenoid Body Strategy Download .
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 Main Control Valve Body .
Forward (1, 2, 3, 4) clutch latch 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. CLEAN as necessary. REFER to Hydraulic System
C1234 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 /Forward (1, 2, 3, 4) clutch pressure plate		INSPECT the low OWC /Forward (1, 2, 3, 4) clutch pressure plate surface. INSTALL a new low OWC as necessary.
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 .
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 .
Forward (1, 2, 3, 4) clutch harsh apply	Incorrect Solenoid Body Strategy programmed into PCM	REFER to Solenoid Body Strategy Download .
SSA mechanically sticking		INSTALL a new solenoid body. REFER to Solenoid Body Assembly . Perform the Solenoid Body Strategy, REFER to Solenoid Body Assembly .
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 latch 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 valve body and separator plate passages for leakage. INSPECT CB1234 check ball for blocked passage. CLEAN as necessary. REFER to Hydraulic System .
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
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 .