Flex Plate: Service and Repair

WM 136319 Removing and installing drive plate for torque converter on DFI engines

Tools





Technical values





Preliminary work

1. Remove the transmission -> 373519 Removing and installing transmission - section on "Removing" or, with the engine removed, remove the transmission -> 373527 Removing and mounting transmission - section on "Removing"

Removing drive plate for torque converter on DFI engines

Removing drive plate for torque converter on V8 DFI engines

1. Mark installation position of the drive plate relative to the crankshaft using a felt-tip pen.

Information

The threaded bore in the oil guide housing is a blind hole.

- The toothed segment must be secured to the oil guide housing using a screw (M12 x 50). -2- This screw ensures that the toothed segment is secured well and prevents damage to the blind hole thread because the thread is the correct length.

- The engagement point of the toothed segment must be facing the crankcase. -1-





Drive plate toothed segment

- Position toothed segment at the bottom two threaded bores of the oil guide housing. => Toothed segment on oil guide housing





Toothed segment on oil guide housing

2. Block the drive plate. To do this, attach toothed segment 95381 to a threaded bore at the bottom of the oil guide housing so that at least one tooth engages with the ring gear. => Toothed segment





Toothed segment

3. Remove drive plate. To do this, loosen the 10 fastening screws crosswise. => Drive plate





Drive plate

4. Remove drive plate.
5. If the drive plate is stuck, remove it using an internal puller and a slide hammer.
5.1. To do this, insert internal puller into the middle of the drive plate and tighten it. => Internal puller





Internal puller

5.2. Then screw on the slide hammer and knock off the drive plate. => Slide hammer





Slide hammer

Installing drive plate for torque converter on DFI engines

Installing drive plate for torque converter on V8 DFI engines

Information

- Clean the crankshaft stub before installing the drive plate (remove rust).

- Use a special metal-polishing pad (e.g. Never Dull) for this.

- Because of the bearing classification, cleaning at the crankshaft flange must be done gently and, if necessary, the bearing classification must be documented on a separate document and kept in the service booklet.

1. Fit drive plate. Fit new screws.

Information

The threaded bore in the oil guide housing is a blind hole.

- The toothed segment must be secured to the oil guide housing using a screw (M12 x 50). -2- This screw ensures that the toothed segment is secured well and prevents damage to the blind hole thread because the thread is the correct length.

- The engagement point of the toothed segment must be facing the crankcase. -1-





Drive plate toothed segment

- Position toothed segment at the bottom two threaded bores of the oil guide housing. => Toothed segment on oil guide housing





Toothed segment on oil guide housing

2. Block the drive plate. To do this, attach toothed segment 95381 to a screw hole in the crankcase so that at least one tooth engages with the starter teeth. => Toothed segment





Toothed segment

3. Tighten the 10 new fastening screws crosswise. => Fastening screws => Tightening torque: 60 Nm (44 ftlb.), then => Torque angle: 90°





Fastening screws

4. Toothed segment 95381 must be removed.

Subsequent work

1. Install transmission. -> 373519 Removing and installing transmission - section on "Installing" or, with the engine removed, mount the transmission -> 373527 Removing and mounting transmission - section on "Mounting"