Forward Clutch System
For forward (1, 2, 3, 4) clutch operation, Automatic Transmission .
| 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 | Solenoids . |
| 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 Valve Body . | |
| 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 Main Control -- Overhaul . | |
| CB1234 seal leaking | REMOVE the main control, 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 -- 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 Transaxle -- Overhaul . | |
| Low OWC snap ring | INSPECT the low OWC snap ring for proper seating in case. REFER to Transaxle -- Overhaul . | |
| 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 Transaxle -- 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 Transaxle -- Overhaul . | |
| Forward (1, 2, 3, 4) clutch piston seal leakage. | INSTALL a new forward (1, 2, 3, 4) clutch piston. REFER to Transaxle -- Overhaul . | |
| Forward (1, 2, 3, 4) clutch always applied | Solenoid filter seal damaged at SSA | REFER to Solenoids . |
| 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 | REMOVE the main control, 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 -- Overhaul . | |
| Front planetary sun gear and shell assembly | INSPECT the sun gear and shell for wear and damage. INSTALL new components necessary, REFER to Transaxle -- 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 Transaxle -- Overhaul . | |
| 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 Transaxle -- Overhaul . | |
| Forward (1, 2, 3, 4) clutch delayed/soft/slipping apply | Incorrect Solenoid Body Strategy programmed into PCM | REFER to Solenoid Body Strategy Download . |
| Solenoid filter seal damaged at SSA | REFER to Solenoids . | |
| 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 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 | REMOVE the main control, 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 -- Overhaul . | |
| 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 -- Overhaul . | |
| Low OWC | INSPECT the low OWC. INSTALL a new low OWC as necessary. REFER to Transaxle -- 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 Transaxle -- 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 Transaxle -- Overhaul . | |
| 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 Transaxle -- Overhaul . | |
| 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 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 Transaxle -- Overhaul . | |
| 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 Transaxle -- Overhaul . | |
| 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 Main Control -- Overhaul s. | |
| 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 Transaxle -- 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 Transaxle -- Overhaul . | |