Removing the one-piece control block cover
Loosen 20 screws (1) and remove them with their washers (2).
Remove the cover (3).
Remove the seal (4).
Remove the two-piece control block cover.
Loosen 13 screws (1) and remove them with their washers (2).
Remove the cover (3).
Remove the cover (9).
Remove the seal (8).
Loosen 13 screws (4) and remove them with their washers (5).
Remove the frame (6).
Remove the seal (7).
Installing the control block cover
Insert the new seal (4).
The seal must be free of grease when you install it.
Screw the control block cover (3) tight using 20 hexagon bolts M8 x 30 - 8.8 (1) and washers B 8.4 (2).
Tightening torque 23 Nm.
Removing the control block cover
Loosen 20 bolts (1) and remove them with 20 washers (2).
Remove the control block cover (3).
Remove the seal (4).
Installing the control block cover
Insert the new seal (4).
The seal must be free of grease when you install it.
Screw the control block cover (3) tight using 20 hexagon bolts M8 x 30 - 8.8 (1) and washers B 8.4 (2).
Tightening torque 23 Nm.
Check speed sensor N1 and disc carrier of the clutch
1. Sensor DIWA.5
2. Sensor DIWA.6 with rotation direction identification
3. Disc carrier of the clutch
Dismantle sensor N1.
Visually inspect sensor N1 (frequency transducer) and disc support of the clutch e.g. for mechanical damage (recognizable by the metal abrasion on the sensor → 1) and, if possible, for completeness of the teeth.
Clearance of sensor N1 – visually inspect the disc carrier of the clutch e.g. for signs of grinding on the sensor by the measurement gear.
Connect sensor N1 with the transmission controller.
For a function check, connect sensor N1 with the transmission controller.
Create a signal with a metallic object (e.g. screwdriver).
Check the frequency transducer
The metal object must be moved to and fro relative to the sensor in the plane in which the teeth of the measurement gear normally pass the sensor.
ALADIN test window "Transmission monitor"
Select the "Transmission monitor" button in ALADIN in the Service menu. A frequency signal must be displayed in the "Transmission monitor" test window of ALADIN.
Check speed sensor N2 and counter wheel
1. Sensor DIWA.5
2. Sensor DIWA.6 with rotation direction identification
3. Counter wheel
Dismantle sensor N2.
Visually inspect sensor N2 (frequency transducer) and outer rim of reverse gear e.g. for mechanical damage (recognizable by the metal abrasion on the sensor → 1) and if possible for completeness of the teeth.
Clearance of sensor N2 – Visually inspect the outer rim e.g. for signs of grinding on the sensor by the measurement gear.
Connect sensor N2 with the transmission controller.
For a function check, connect sensor N2 with the transmission controller.
Create a signal with a metallic object (e.g. screwdriver).
Check the frequency transducer
The metal object must be moved to and fro relative to the sensor in the plane in which the teeth of the measurement gear normally pass the sensor.
ALADIN test window "Transmission monitor"
Select the "Transmission monitor" button in ALADIN in the Service menu. A frequency signal must be displayed in the "Transmission monitor" (→ 1) test window of ALADIN.
Check speed sensor N3 and outer rim of reverse gear
1. Sensor DIWA.5
2. Sensor DIWA.6 with rotation direction identification
3. Outer rim of reverse gear
Dismantle sensor N3.
Visually inspect sensor N3 (frequency transducer) and counter wheel e.g. for mechanical damage (recognizable by the metal abrasion on the sensor → 1) and if possible for completeness of the teeth.
Clearance N3 – Visually check counter wheel e.g. for signs of grinding on the sensor by the measurement gear
Connect sensor N3 with the transmission controller.
For a function check, connect sensor N3 with the transmission controller.
Create a signal with a metallic object (e.g. screwdriver).
Check the frequency transducer
The metal object must be moved to and fro relative to the sensor in the plane in which the teeth of the measurement gear normally pass the sensor.
ALADIN test window "Transmission monitor"
Select the "Transmission monitor" button in ALADIN in the Service menu. A frequency signal must be displayed in the "Transmission monitor" (→ 1) test window of ALADIN.