P27.19-2476-09
Electrohydraulic controller unit, model 221 |
1 | Bolts | Y3/8n3 | Output speed sensor (VGS) | Y3/8y5 | Brake control solenoid valve B1 (VGS) | ||
2 | Leaf springs | Y3/8n4 | Fully integrated transmission control (VGS) control unit | Y3/8y6 | Brake control solenoid valve B2 (VGS) | ||
3a | Screw | Y3/8y1 | Working pressure control solenoid valve (VGS) | Y3/8y7 | Brake control solenoid valve B3 (VGS) | ||
3b | Bolts | Y3/8y2 | Clutch control solenoid valve K1 (VGS) | Y3/8y8 | Torque converter lockup clutch control solenoid valve (VGS) | ||
7 | Valve body assembly | Y3/8y3 | Clutch control solenoid valve K2 (VGS) | ||||
Y3/8 | Electric control unit (VGS) | Y3/8y4 | Clutch control solenoid valve K3 (VGS) |
Electrohydraulic controller unit, model 221 |
4d | O-rings |
4e | EHS connector |
5 | Spring pin |
6 | Magnet |
6a | Shift valve |
7 | Valve body assembly |
Y3/8 | Electric control unit (VGS) |
P27.19-2477-06
Topical note | Notes on self-locking nuts and bolts | ||
Topical note | Information on preventing damage to electronic components due to electrostatic discharge | ||
| Remove | ||
1 | Read out characteristics of fully integrated transmission control control unit (Y3/8n4) using diagnostic system | When replacing electric controller unit (Y3/8). | |
| Transmission 722.9 in model 205, 217, 222 | ||
| Transmission 722.9 in model 166, 172, 204, 207, 212, 216, 218, 231, 251 | ||
2 | Remove electrohydraulic controller unit | ||
| Disassemble/assemble | ||
3 | Unscrew bolts (1) and remove leaf springs (2) | Transmission 722.9Bolt, solenoid valve to shift plate | |
4 | Pull control solenoid valves (Y3/8y1 to Y3/8y8) out of the electric controller unit (Y3/8) | ||
| Automatic transmission fluids (ATF) (specification 236.14) | Transmission 722.9 as of 6/21/10 with engine 629 | |
| Automatic transmission fluids (ATF) (specification 236.15) | Transmission 722.9 as of 6/21/10 with engine 113 | |
Assembly: Always install each control solenoid valve (Y3/8y1 to Y3/8y8) at its original installation location again. Moisten O-rings with transmission oil. | |||
| Clean | ||
5 | Clean sieves of control solenoid valves (Y3/8y1 to Y3/8y8) and check for damage | ||
| Automatic transmission fluids (ATF) (specification 236.14) | Transmission 722.9 as of 6/21/10 with engine 629 | |
| Automatic transmission fluids (ATF) (specification 236.15) | Transmission 722.9 as of 6/21/10 with engine 113 | |
Clean the sieves by moving back and forth in transmission oil. Do not clean any other parts of the electric controller unit (Y3/8) with rags or compressed air! | |||
If damage is present. | |||
| |||
Replace control solenoid valves (Y3/8y1 to Y3/8y8). | |||
6 | Remove bolt (3a). | Assembly: Replace bolt (3a). | |
Transmission 722.9Bolt, controller unit for fully integrated transmission control to electrohydraulic controller unit | |||
7 | Unscrew screws/bolts (3) and remove fully integrated transmission control unit (Y3/8n4) from valve body assembly (7) | ||
| Automatic transmission fluids (ATF) (specification 236.14) | Transmission 722.9 as of 6/21/10 with engine 629 | |
| Automatic transmission fluids (ATF) (specification 236.15) | Transmission 722.9 as of 6/21/10 with engine 113 | |
8 | Assemble in the reverse order | ||
| Install | ||
9 | Install electrohydraulic controller unit | ||
10 | Transfer read-out characteristics to fully integrated transmission control unit (Y3/8n4) using diagnostic system | When replacing electric controller unit (Y3/8). | |
Make sure that the diagnostic system used before removal is used. |