33 11 021 Replacing shaft seal for input flange on final drive

WARNING: This page is about a different variant/trim than selected.

Special tools required:

IMPORTANT: Use only approved gear oils.

Failure to comply with this instruction will result in serious damage to the rear differential!

Necessary preliminary tasks:

Remove Propeller Shaft From Rear Differential Drive Flange , remove complete propeller shaft if necessary

Removing drive flange:

Lift out retaining plate.

Mark position of collar nut (1) on drive shaft with peening tool.

Fig 1: Identifying Drive Flange Collar Nut

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Brace drive flange with special tool 23 0 020 and release collar nut.

Fig 2: Bracing Drive Flange With Special Tool (23 0 020)

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NOTE: Read and comply with document "Rear differential: Assignment to model series".

215L:

Remove drive flange with special tools 31 2 101, 31 2 102, 31 2 103 / 31 2 104.

Fig 3: Identifying Special Tools (31 2 101), (31 2 102), (31 2 103) And ( 31 2 104)

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168L, 188L:

Remove drive flange with special tool 33 1 150.

Fig 4: Removing Drive Flange With Special Tool (33 1 150)

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Replacing shaft seal:

Withdraw shaft seal with special tool 00 5 010.

Fig 5: Removing Shaft Seal With Special Tool (00 5 010)

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Drive in new shaft seal with following special tools (depending on rear differential) as far as it will go.

168L: Use special tools 00 5 500 and 33 3 390
188L: Use special tools 00 5 500 and 33 3 470
215L: Use special tools 00 5 500 and 33 3 440

Fig 6: Identifying Special Tools (33 3 390), ( 33 3 440), (33 3 470) And (00 5 500)
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Installing drive flange:

Coat sealing lips of shaft seal and sealing surface of drive flange with differential oil.

Fit drive flange.

Press on drive flange with special tools 23 1 300, 33 1 341 and 23 1 303, if necessary 23 1 302 until collar nut can be screwed on.

Fig 7: Identifying Special Tools (23 1 300), (23 1 302), (33 1 341) And (23 1 303)

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IMPORTANT: Do not under any circumstances tighten down collar nut beyond marker points in order to avoid damaging the clamping sleeve.

Tighten down collar nut (1) to point where marker points are aligned.

Fig 8: Identifying Flange Collar Nut Marker

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Drive in new retaining plate with following special tools (depending on rear differential) as far as it will go.

168L: 188L: Use special tools 00 5 500 and 33 3 480
215L: Use special tools 00 5 500 and 33 3 490

Fig 9: Identifying Special Tools (00 5 500), (33 3 480) And (33 3 490)
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After installation: