Removing
1. Place wheel chocks under the rear wheels. Apply the parking brake fully. Raise the front of the vehicle and securely jack stands under it (see «Lifting and placing the car on supports»). The speedometer drive is located on the rear of the gearbox housing, near the inner end of the right axle shaft. Loosen the screws and remove the engine protection (if applicable).
2. Disconnect the speedometer drive electrical connector (pic. 6.2).
Pic. 6.2. electrical connector (1) and mounting bolt (2) speedometer drive
3. Remove the bolt and remove the heat shield (if applicable). Remove the speedometer drive/drive gear assembly, along with the appropriate O-ring, from the transaxle case.
4. If necessary, the gear can be removed from the body and the seal removed from the top of the body. Inspect the gear for signs of damage and replace if necessary. Be sure to replace the housing o-ring.
5. If the driven gear is worn or damaged, also inspect the drive gear in the transmission case for similar signs.
6. To replace the drive gear on the MA5 gearbox, disassemble the gearbox and remove the differential. Therefore, this work should be left to a Peugeot/Citroen dealer or a transmission specialist.
7. To remove the pinion gear on the BE3/5 and BE4/5 gearboxes, first remove the right axle shaft as described in Chapter 8. Remove the three bolts and remove the speedometer drive housing along with the corresponding O-ring from the gearbox. Remove drive gear from differential and remove all shims from gear (pic. 6.7, a, b).
Pic. 6.7, a. On gearboxes BE3 / 5 and BE4 / 5, unscrew the bolts securing the housing...
Pic. 6.7b....and remove the housing, o-ring and drive gear from the gearbox
Installation
8. On gearboxes VEZ / 5 and BE4 / 5, in the case when the drive gear was removed, install shims on the differential gear, then install the speedometer drive on the gear, making sure that the projections of the drive gear fit correctly into the grooves of the gear (pic. 6.8). Install a new O-ring to the rear of the speedometer drive housing, and then install the housing to the transmission and tighten the appropriate bolts to the specified torque. Inspect the axle shaft seal for signs of wear and replace if necessary. Install the axle shaft as described in chapter 8.
Pic. 6.8. On gearboxes BE3 / 5 and BE4 / 5, make sure that when installing, the projections of the drive gear fit correctly into the grooves of the gear (marked with arrows)
9. On all transmissions, apply a little grease to the sealing lips of the collar and to the driven gear shaft, and slide the gear into place in the speedometer drive.
10. Fit a new O-ring to the speedometer drive and install it to the transmission, making sure that the drive and driven gears are properly engaged. Screw the drive mounting bolt together with the heat shield (if applicable) and tighten it securely.
11. Dock the electrical connector on the speedometer drive. Install engine protection (if applicable). Lower the car.