Left Seal, Replacing
Special Tools And Workshop Equipment Required
- Used Oil Collection and Extraction Unit :SMN372500
- Seal Installer - Flange Shaft :T40164
- Sealing Grease :G 052 128 A1
This procedure contains mandatory replaceable parts. Refer to component overview and parts information prior to starting procedure.
Mandatory Replacement Parts
- O-ring - Front final drive cover
- Bolts - Cover
- Fill and Check Plug
- The transmission is removed and mounted horizontally on the engine/transmission holder. Refer to SECURING ON ENGINE AND TRANSMISSION HOLDER .
-- Place the :SMN372500 under the transmission.
-- Remove the right flange shaft. Refer to RIGHT FLANGE SHAFT, REMOVING AND INSTALLING .
-- Remove the bolts -arrows- diagonally.
-- Carefully remove the front final drive cover; the transmission fluid will drain out during this.
Danger of causing damage to the differential.
- Slowly and carefully remove the differential from the transmission housing. Otherwise differential can fall out of transmission.
- A differential that has fallen out can no longer be installed. If the differential falls out, the transmission must be replaced.
- Make sure the differential bearing races/tapered roller bearings and shims do not fall out of the transmission housing and final drive.
- Bearing races/tapered roller bearings and shims that have fallen out cannot be allocated with service equipment.
-- Carefully remove the differential -arrow- and lay it on a soft surface.
-- Remove the left flange shaft. Refer to LEFT FLANGE SHAFT, REMOVING AND INSTALLING .
Risk of damaging the seat surface in the transmission housing.
- Position the screwdriver carefully.
-- Pry out the shaft seal from the rear side using a screwdriver.
-- Lightly coat the new shaft seal on the outer edge with oil and slide on to the :T40164 .
- The open side of the shaft seal faces the :T40164 .
-- Install the left flange shaft seal using the :T40164 all the way without tilting.
-- Fill the space between the sealing/dust lip halfway with Sealing Grease:G 052 128 A1 .
-- Install the differential.
-- Replace the O-ring -A- on the front final drive cover and coat it with gear oil.
-- Install the front final drive cover with a new O-ring and tighten the bolts to the tightening specification. Refer to the image below; (TIGHTENING SPECIFICATIONS ) .
-- Install the left flange shaft. Refer to LEFT FLANGE SHAFT, REMOVING AND INSTALLING .
-- Install the right flange shaft. Refer to RIGHT FLANGE SHAFT, REMOVING AND INSTALLING .
-- The front final drive must be pre-filled with gear oil before installing the transmission. Refer to GEAR OIL, DRAINING AND FILLING .
Risk of damaging the transmission.
- There are different gear oils for the "multitronic 0AW transmission".
- Only gear oil available as a replacement part meant for the transmission code may be used.
- Do not mix the gear oil, not even in small quantities. This will cause the shaft seals to leak. Note the allocation of the gear oil according to the transmission code. Refer to Parts information. Only gear oil available as a replacement part for the "multitronic 0AW" may be used in the front final drive.
- Replace the filler plug after checking the level. Always pay attention to the allocation according to the transmission codes in the Parts information. Compare the old and new filler plug to prevent leakage on the transmission.
- Mixing different gear oils is not permitted, even in small quantities. It will cause leaks on the transmission.
-- Check and adjust the gear oil level in the front final drive after installing the transmission. Refer to GEAR OIL, DRAINING AND FILLING .