What are the steps involved in replacing the rear crankshaft seal in N51, N52, N52KP, N54 six cylinder engine on BMW 335i?

Crankshaft rear main seal replacement requires the removal of the transmission and flywheel, with caution advised to ensure that grooves and crankcase seams are filled with special Loctite® sealant to prevent oil leaks. Begin by removing the transmission, followed by the clutch pressure plate and disc for manual transmission vehicles, and then the flywheel. Drain the engine oil, and if necessary, scrape off the rubber coating to expose the six removal openings on the crankshaft rear main seal. Use the BMW special tool 11 9 200 to pull out the seal by inserting sheet metal screws into the removal openings and tightening them snugly. Slowly screw in the seal remover spindle to extract the seal. Before installing the new seal, clean the seal seating surface and thoroughly degrease the crankcase seams, applying a light coat of engine oil to the seal lip running surface on the crankshaft flange. Position the crankshaft seal and installation sleeve against the crankcase opening, taking care not to kink or damage the sealing lip, and ensuring the seal grooves center on the crankcase seams. Coat both grooves on the seal with Loctite® 171000 primer and allow it to dry for about one minute. Press the seal in as far as possible by hand, then remove the installation sleeve. Fit BMW special tools 11 9 182 and 11 9 184 to the crankshaft flange, place the spacer ring over the seal, and use BMW special tools 11 9 181 and 11 9 183 to press in the seal before removing the special tools and spacer ring.

How to replace the front crankshaft seal on BMW X3?

With the engine fully cooled off, remove the electric cooling fan and cowl, engine accessory belts and crankshaft vibration damper and pulley. Be sure to mark belts with direction of rotation. Install cap (BMW special tool 11 2 383) on the end of the crankshaft. Install seal guide (BMW special tool 11 2 385) over the end of the crankshaft. Be sure to align the groove with the keyway on the crankshaft (arrow). Install oil seal puller (BMW special tool 11 2 380) and screw in the body of the puller until it contacts the seal. Tighten the bolt in the center of the tool to draw the seal out of the cover. Coat the new seal with oil and position it in the timing chain cover. Use BMW special tool 11 3 280 and the crankshaft center bolt to draw the seal in flush with the timing case cover. Reinstall the crankshaft vibration damper and pulley. The remainder of the installation is the reverse of removal, noting the following: Install engine accessory belts. Install the cooling fan.

What does the process of replacing a rear crankshaft seal involve in a V8 engine on a BMW X5?

Crankshaft rear main seal replacement involves removing the transmission and flywheel, followed by draining the engine oil. Next, remove the bolts holding the rear main seal carrier, including those at the oil pan, and carefully separate the seal carrier from the oil pan gasket without damaging it. BMW provides a kit for the rear main seal carrier and seal. When installing the new seal carrier to the crankcase, check the locating sleeves for damage, replace the gasket between the rear main seal carrier and crankcase, apply a thin coat of 3-Bond® 1209 or equivalent sealant to the oil pan gasket sealing surfaces, and lubricate the crankshaft and seal contact surfaces. Use BMW special tool 11 2 390 to guide the installation of the seal over the end of the crankshaft, ensuring the seal carrier and support bushing are pressed straight without tilting, and remove the installation guide carefully. Replace the sealing washers under the seal carrier mounting bolts, install the bolts, and torque them to specifications before installing the oil pan bolts. The assembly process is the reverse of disassembly, which includes installing the flywheel, torque converter, and transmission, filling the engine with oil, and running the engine to check for leaks.

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36 Crankshaft Seals found

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BMW Shaft Seal
Part Number: 11117587168
$35.38 MSRP: $58.10
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Fits the following BMW Models:
- 1 Series M | 2011 | Coupe(E82)
- 128i | 2008-2013 | Convertible N51 Engine(E88), Convertible N52 Engine(E88), Coupe N51 Engine(E82), Coupe N52 Engine(E82)
- 135i | 2008-2013 | Convertible N54 Engine(E88), Convertible N55 Engine(E88), Convertible(E88), Coupe N54 Engine(E82), Coupe N55 Engine(E82), Coupe(E82)
- 228i | 2014-2016 | Convertible N20 Engine(F23), Convertible N26 Engine(F23), Coupe N20 Engine(F22), Coupe N26 Engine(F22), N20 Engine(F22), N26 Engine(F22)
- 228i xDrive | 2015-2016 | Convertible N20 Engine(F23), Convertible N26 Engine(F23), Coupe N20 Engine(F22), Coupe N26 Engine(F22)
- 320i | 2013-2018 | Sedan(F30)
- 320i xDrive | 2013-2018 | Sedan(F30)
- 323i | 2006-2011 | Sedan(E90)
- 325i | 2006 | Sedan(E90)
- 325xi | 2006 | Sedan(E90), Wagon(E91)
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BMW Shaft Seal
Part Number: 11118618864
$33.71 MSRP: $55.36
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Product Specifications
- Replaces: 11-11-7-636-055, 11-11-7-593-353
Fits the following BMW Models:
- 1 Series M | 2011 | Coupe(E82)
- 128i | 2008-2013 | Convertible N51 Engine(E88), Convertible N52 Engine(E88), Coupe N51 Engine(E82), Coupe N52 Engine(E82)
- 135i | 2008-2013 | Convertible N54 Engine(E88), Convertible N55 Engine(E88), Convertible(E88), Coupe N54 Engine(E82), Coupe N55 Engine(E82), Coupe(E82)
- 228i | 2014-2016 | Convertible N20 Engine(F23), Convertible N26 Engine(F23), Coupe N20 Engine(F22), Coupe N26 Engine(F22), N20 Engine(F22), N26 Engine(F22)
- 228i xDrive | 2015-2016 | Convertible N20 Engine(F23), Convertible N26 Engine(F23), Coupe N20 Engine(F22), Coupe N26 Engine(F22)
- 320i | 2013-2018 | Sedan(F30)
- 320i xDrive | 2013-2018 | Sedan(F30)
- 323i | 2006-2011 | Sedan(E90)
- 325i | 2006 | Sedan(E90)
- 325xi | 2006 | Sedan(E90), Wagon(E91)
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BMW Front Shaft Seal
Part Number: 11117547842
$37.08 MSRP: $60.88
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Product Specifications
- Other Name: Front Crank Seal
Fits the following BMW Models:
- 1 Series M | 2011 | Coupe(E82)
- 128i | 2008-2013 | Convertible N51 Engine(E88), Convertible N52 Engine(E88), Coupe N51 Engine(E82), Coupe N52 Engine(E82)
- 135i | 2008-2013 | Convertible N54 Engine(E88), Convertible N55 Engine(E88), Convertible(E88), Coupe N54 Engine(E82), Coupe N55 Engine(E82), Coupe(E82)
- 323i | 2006-2011 | Sedan(E90)
- 325i | 2006 | Sedan(E90)
- 325xi | 2006 | Sedan(E90), Wagon(E91)
- 328i | 2007-2013 | Convertible N51 Engine(E93), Convertible N52 Engine(E93), Coupe N51 Engine(E92), Coupe N52 Engine(E92), Sedan N51 Engine(E90), Sedan N52 Engine(E90), Wagon(E91)
- 328i xDrive | 2009-2013 | Coupe N51 Engine(E92), Coupe N52 Engine(E92), Sedan N51 Engine(E90), Sedan N52 Engine(E90), Wagon(E91)
- 328xi | 2007-2008 | Coupe N51 Engine(E92), Coupe N52 Engine(E92), Sedan N51 Engine(E90), Sedan N52 Engine(E90), Wagon(E91)
- 330i | 2006 | Sedan(E90)
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BMW Shaft Seal
Part Number: 11148664904
$33.71 MSRP: $55.36
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Product Specifications
- Replaces: 11-14-8-602-594
Fits the following BMW Models:
- 228 xDrive Gran Coupe | 2025 | 4 Cyl 2.0 L GAS
- 228i Gran Coupe | 2021-2024 | 4 Cyl 2.0 L GAS
- 228i xDrive Gran Coupe | 2020-2024 | 4 Cyl 2.0 L GAS, F44
- 230i | 2017-2025 | 4 Cyl 2.0 L GAS, Convertible(F23), Coupe(F22)
- 230i xDrive | 2023-2025, 2017-2021 | 4 Cyl 2.0 L GAS, Convertible(F23), Coupe(F22)
- 330e | 2021-2024, 2016-2018 | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV), Sedan(F30)
- 330e xDrive | 2021-2024 | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- 330i | 2017-2025 | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), Sedan(F30), Sedan(G20)
- 330i GT xDrive | 2017-2019 | F34
- 330i xDrive | 2017-2025 | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), Sedan(F30), Sedan(G20), Wagon(F31)
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BMW Shaft Seal
Part Number: 11118604931
$33.71 MSRP: $55.36
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Product Specifications
- Replaced by: 11118664905
Fits the following BMW Models:
- 228i xDrive Gran Coupe | 2020 | F44
- 230i | 2017-2020 | Convertible(F23), Coupe(F22)
- 230i xDrive | 2017-2020 | Convertible(F23), Coupe(F22)
- 330e | 2016-2018 | Sedan(F30)
- 330i | 2017-2020 | Sedan(F30), Sedan(G20)
- 330i GT xDrive | 2017-2019 | F34
- 330i xDrive | 2017-2020 | Sedan(F30), Sedan(G20), Wagon(F31)
- 340i | 2016-2018 | Sedan(F30)
- 340i GT xDrive | 2017-2019 | F34
- 340i xDrive | 2016-2018 | Sedan(F30)
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BMW Shaft Seal
Part Number: 11147647381
$38.78 MSRP: $63.68
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Product Specifications
- Replaces: 11-14-7-558-914, 11-14-7-534-192, 11-14-7-524-312
Fits the following BMW Models:
- 750i xDrive | 2016-2022 | 8 Cyl 4.4 L GAS, Sedan(G12)
- 760i xDrive | 2023-2024 | 8 Cyl 4.4 L MILD HYBRID EV-GAS (MHEV)
- Alpina B7 | 2017-2019 | Sedan(G12)
- M5 | 2025 | 8 Cyl 4.4 L PLUG-IN HYBRID EV-GAS (PHEV)
- M550i xDrive | 2018-2023 | 8 Cyl 4.4 L GAS, Sedan(G30)
- M850i xDrive | 2019-2025 | 8 Cyl 4.4 L GAS, Convertible(G14), Coupe(G15)
- M850i xDrive Gran Coupe | 2020-2025 | 8 Cyl 4.4 L GAS, G16
- X5 | 2019-2025, 2004-2013 | 4.4i(E53), 4.8i(E70), 4.8is(E53), 8 Cyl 4.4 L GAS, 8 Cyl 4.4 L MILD HYBRID EV-GAS (MHEV), M50i(G05), xDrive48i(E70), xDrive50i(E70), xDrive50i(G05)
- X5 M | 2021-2025, 2015-2018, 2010-2013 | 8 Cyl 4.4 L GAS, 8 Cyl 4.4 L MILD HYBRID EV-GAS (MHEV), E70, F85
- X6 | 2020-2025, 2008-2014 | 8 Cyl 4.4 L GAS, 8 Cyl 4.4 L MILD HYBRID EV-GAS (MHEV), ActiveHybrid(E72), M50i(G06), xDrive50i(E71)
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BMW Shaft Seal
Part Number: 11147647380
$37.08 MSRP: $60.88
You Save: $23.80 (40%)
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Product Specifications
- Replaces: 11-14-7-512-100
Fits the following BMW Models:
- 545i | 2004-2005 | Sedan(E60)
- 550i | 2006-2016 | Sedan(E60), Sedan(F10)
- 550i GT | 2010-2015 | F07
- 550i GT xDrive | 2010-2017 | F07
- 550i xDrive | 2011-2016 | Sedan(F10)
- 645Ci | 2004-2005 | Convertible(E64), Coupe(E63)
- 650i | 2012-2018, 2006-2010 | Convertible(E64), Convertible(F12), Coupe(E63), Coupe(F13)
- 650i Gran Coupe | 2013-2019 | F06
- 650i xDrive | 2012-2018 | Convertible(F12), Coupe(F13)
- 650i xDrive Gran Coupe | 2013-2019 | F06
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BMW Shaft Seal
Part Number: 11142249532
$91.31 MSRP: $97.36
You Save: $6.05 (7%)
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Fits the following BMW Models:
- 320i | 2001-2005, 1993-1995 | Sedan(E36), Sedan(E46)
- 323Ci | 2000 | Convertible(E46), Coupe(E46)
- 323i | 1998-2000 | Convertible(E36), Sedan(E46), Wagon(E46)
- 323is | 1998-1999 | Coupe(E36)
- 325Ci | 2001-2006 | Convertible(E46), Coupe M54 Engine(E46), Coupe M56 Engine(E46), Coupe(E46)
- 325i | 2001-2005, 1992-1995 | Convertible(E36), Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E36), Sedan(E46), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
- 325is | 1991-1995 | Coupe(E36)
- 325xi | 2001-2005 | Sedan(E46), Wagon(E46)
- 328Ci | 2000 | Coupe(E46)
- 328i | 1996-2000 | Convertible(E36), Sedan(E36), Sedan(E46)
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BMW Shaft Seal
Part Number: 11142249533
$91.31 MSRP: $97.36
You Save: $6.05 (7%)
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Product Specifications
- Other Name: Front Crank Seal, Oil Seal, Rear Main Seal
- Replaces: 11-14-1-706-785, 11-14-2-245-364, 11-14-1-706-999, 11-14-2-193-237, 11-14-2-247-164
Fits the following BMW Models:
- 1602 | 1967-1971
- 2000 | 1969
- 2002 | 1968-1976
- 2002tii | 1971-1974
- 2500 | 1969-1970
- 2800 | 1969-1970
- 2800CS | 1969-1971
- 3.0CS | 1971-1974
- 3.0S | 1973-1974
- 3.0Si | 1975-1976
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BMW Shaft Seal
Part Number: 11117584398
$37.08 MSRP: $60.88
You Save: $23.80 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: 11-11-7-547-841
Fits the following BMW Models:
- 128i | 2008-2013 | Convertible N51 Engine(E88), Convertible N52 Engine(E88), Coupe N51 Engine(E82), Coupe N52 Engine(E82)
- 135i | 2008-2010 | Convertible N54 Engine(E88), Convertible(E88), Coupe N54 Engine(E82), Coupe(E82)
- 323i | 2006-2011 | Sedan(E90)
- 325i | 2006 | Sedan(E90)
- 325xi | 2006 | Sedan(E90), Wagon(E91)
- 328i | 2007-2013 | Convertible N51 Engine(E93), Convertible N52 Engine(E93), Coupe N51 Engine(E92), Coupe N52 Engine(E92), Sedan N51 Engine(E90), Sedan N52 Engine(E90), Wagon(E91)
- 328i xDrive | 2009-2013 | Coupe N51 Engine(E92), Coupe N52 Engine(E92), Sedan N51 Engine(E90), Sedan N52 Engine(E90), Wagon(E91)
- 328xi | 2007-2008 | Coupe N51 Engine(E92), Coupe N52 Engine(E92), Sedan N51 Engine(E90), Sedan N52 Engine(E90), Wagon(E91)
- 330i | 2006 | Sedan(E90)
- 330xi | 2006 | Sedan(E90)
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BMW Shaft Seal
Part Number: 11142249534
$33.71 MSRP: $55.36
You Save: $21.65 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Front Cover Seal, Lower Timing Cover Seal
Fits the following BMW Models:
- 335d | 2009-2011 | Sedan(E90)
- X5 | 2009-2013 | xDrive35d(E70)
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BMW Shaft Seal
Part Number: 11217838072
$33.71 MSRP: $55.36
You Save: $21.65 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Crankshaft Seal, Front Crank Seal
Fits the following BMW Models:
- M3 | 2008-2013 | Convertible(E93), Coupe(E92), Sedan(E90)
- M5 | 2006-2010 | Sedan(E60)
- M6 | 2006-2010 | Convertible(E64), Coupe(E63)
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BMW Shaft Seal
Part Number: 11217838071
$38.78 MSRP: $63.68
You Save: $24.90 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Crankshaft Seal, Rear Main Seal
- Replaces: 11-14-7-791-449
Fits the following BMW Models:
- M3 | 2008-2013 | Convertible(E93), Coupe(E92), Sedan(E90)
- M5 | 2006-2010 | Sedan(E60)
- M6 | 2006-2010 | Convertible(E64), Coupe(E63)
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BMW Shaft Seal
Part Number: 11141275466
$91.31 MSRP: $97.36
You Save: $6.05 (7%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: 11-14-1-265-431, 11-14-1-736-932, 11-14-1-274-346
Fits the following BMW Models:
- 325e | 1984-1987 | Coupe(E30), Sedan(E30)
- 325i | 1987-1992 | Convertible(E30), Coupe(E30), Sedan(E30)
- 325is | 1987-1990 | Coupe(E30)
- 325ix | 1988-1991 | Coupe(E30), Sedan(E30)
- 524td | 1985-1986 | Sedan(E28)
- 525i | 1989-1991 | M20 Engine(E34), Sedan(E34)
- 528e | 1982-1988 | Sedan(E28)
- 530i | 1994-1995 | Sedan(E34), Wagon(E34)
- 540i | 1997-2003, 1994-1995 | Sedan(E34), Sedan(E39), Wagon(E39)
- 740i | 1997-2001, 1993-1995 | Sedan(E32), Sedan(E38)
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BMW Shaft Seal
Part Number: 11118664905
$33.71 MSRP: $55.36
You Save: $21.65 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: 11-11-8-604-931
Fits the following BMW Models:
- 228 xDrive Gran Coupe | 2025 | 4 Cyl 2.0 L GAS
- 228i Gran Coupe | 2021-2024 | 4 Cyl 2.0 L GAS
- 228i xDrive Gran Coupe | 2020-2024 | 4 Cyl 2.0 L GAS, F44
- 230i | 2017-2025 | 4 Cyl 2.0 L GAS, Convertible(F23), Coupe(F22)
- 230i xDrive | 2023-2025, 2017-2021 | 4 Cyl 2.0 L GAS, Convertible(F23), Coupe(F22)
- 330e | 2021-2024, 2016-2018 | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV), Sedan(F30)
- 330e xDrive | 2021-2024 | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- 330i | 2017-2024 | 4 Cyl 2.0 L GAS, Sedan(F30), Sedan(G20)
- 330i GT xDrive | 2017-2019 | F34
- 330i xDrive | 2017-2023 | 4 Cyl 2.0 L GAS, Sedan(F30), Sedan(G20), Wagon(F31)
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BMW Shaft Seal
Part Number: 11147797490
$35.38 MSRP: $58.10
You Save: $22.72 (40%)
Ships in 1-3 Business Days
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Fits the following BMW Models:
- 328d | 2014-2018 | Sedan(F30)
- 328d xDrive | 2014-2018 | Sedan(F30), Wagon(F31)
- 535d | 2014-2016 | Sedan(F10)
- 535d xDrive | 2014-2016 | Sedan(F10)
- 540d xDrive | 2018 | Sedan(G30)
- 740Ld xDrive | 2015 | Sedan(F02)
- X3 | 2015-2017 | xDrive28d(F25)
- X5 | 2014-2018 | xDrive35d(F15)
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BMW Set Of Covers
Part Number: 11141436109
$181.27 MSRP: $233.15
You Save: $51.88 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Rear Main Seal Retainer, Retainer
- Replaces: 11-14-1-745-093
Fits the following BMW Models:
- 530i | 1994-1995 | Sedan(E34), Wagon(E34)
- 540i | 1997-2003, 1994-1995 | Sedan(E34), Sedan(E39), Wagon(E39)
- 740i | 1997-2001, 1995 | Sedan(E38)
- 740iL | 1995-2001 | Sedan(E38)
- 840Ci | 1994-1997 | Coupe(E31)
- Alpina V8 Roadster | 2003 | Roadster(E52)
- M5 | 2000-2003 | Sedan(E39)
- X5 | 2000-2003 | 4.4i(E53), 4.6is(E53)
- Z8 | 2000-2003 | Roadster(E52)
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BMW Shaft Seal
Part Number: 11117802665
$33.71 MSRP: $55.36
You Save: $21.65 (40%)
Ships in 1-3 Business Days
ADD TO CART
Fits the following BMW Models:
- 328d | 2014-2018 | Sedan(F30)
- 328d xDrive | 2014-2018 | Sedan(F30), Wagon(F31)
- 535d | 2014-2016 | Sedan(F10)
- 535d xDrive | 2014-2016 | Sedan(F10)
- 540d xDrive | 2018 | Sedan(G30)
- 740Ld xDrive | 2015 | Sedan(F02)
- X3 | 2015-2017 | xDrive28d(F25)
- X5 | 2014-2018 | xDrive35d(F15)
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BMW Set Of Covers
Part Number: 11141438715
$114.42 MSRP: $154.05
You Save: $39.63 (26%)
Ships in 1-3 Business Days
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Product Specifications
- Replaced by: 11142247867
Fits the following BMW Models:
- 318i | 1991-1996 | Convertible(E30), Convertible(E36), Sedan(E30), Sedan(E36)
- 318is | 1991-1995 | Coupe(E30), Coupe(E36)
- 318ti | 1995 | Hatchback(E36)
- 325e | 1984-1987 | Coupe(E30), Sedan(E30)
- 325i | 1987-1992 | Convertible(E30), Coupe(E30), Sedan(E30)
- 325is | 1987-1990 | Coupe(E30)
- 325ix | 1988-1991 | Coupe(E30), Sedan(E30)
- 524td | 1985-1986 | Sedan(E28)
- 525i | 1989-1991 | M20 Engine(E34), Sedan(E34)
- 528e | 1982-1988 | Sedan(E28)
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BMW Set Of Covers
Part Number: 11141745095
Product Specifications
- Other Name: Rear Main Seal Retainer
- Replaces: 11-14-1-736-519, 11-14-1-747-850
Fits the following BMW Models:
- 530i | 1994-1995 | Sedan(E34), Wagon(E34)
- 540i | 1994-1995 | Sedan(E34)
- 740i | 1993-1995 | Sedan(E32), Sedan(E38)
- 740iL | 1993-1994 | Sedan(E32)
- 750iL | 1995-2001 | Sedan(E38)
- 840Ci | 1994-1995 | Coupe(E31)
- 850Ci | 1995-1997 | Coupe(E31)
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BMW Crankshaft Seal

Keeping the smooth operation of a BMW vehicle relies on the condition of the Crankshaft Seal. A broken BMW Crankshaft Seal can lead to big performance issues and even a complete vehicle breakdown. To prevent such problems, you could regularly maintain your car and replace your parts. At BMWPartsDeal, we offer high-quality BMW Crankshaft Seal, all designed to keep your vehicle running at its best. Choose BMWPartsDeal for your auto parts needs, you will get your vehicle back to great performance, and save a lot by avoiding costly future repair jobs.

BMW Crankshaft Seal Parts Questions & Experts Answers

Shaft Seal
11117584398
Q: What are the steps involved in replacing the rear crankshaft seal in N51, N52, N52KP, N54 six cylinder engine on BMW 335i?
A:
Crankshaft rear main seal replacement requires the removal of the transmission and flywheel, with caution advised to ensure that grooves and crankcase seams are filled with special Loctite® sealant to prevent oil leaks. Begin by removing the transmission, followed by the clutch pressure plate and disc for manual transmission vehicles, and then the flywheel. Drain the engine oil, and if necessary, scrape off the rubber coating to expose the six removal openings on the crankshaft rear main seal. Use the BMW special tool 11 9 200 to pull out the seal by inserting sheet metal screws into the removal openings and tightening them snugly. Slowly screw in the seal remover spindle to extract the seal. Before installing the new seal, clean the seal seating surface and thoroughly degrease the crankcase seams, applying a light coat of engine oil to the seal lip running surface on the crankshaft flange. Position the crankshaft seal and installation sleeve against the crankcase opening, taking care not to kink or damage the sealing lip, and ensuring the seal grooves center on the crankcase seams. Coat both grooves on the seal with Loctite® 171000 primer and allow it to dry for about one minute. Press the seal in as far as possible by hand, then remove the installation sleeve. Fit BMW special tools 11 9 182 and 11 9 184 to the crankshaft flange, place the spacer ring over the seal, and use BMW special tools 11 9 181 and 11 9 183 to press in the seal before removing the special tools and spacer ring.
Shaft Seal
11142249532
Q: How to replace the front crankshaft seal on BMW X3?
A:
With the engine fully cooled off, remove the electric cooling fan and cowl, engine accessory belts and crankshaft vibration damper and pulley. Be sure to mark belts with direction of rotation. Install cap (BMW special tool 11 2 383) on the end of the crankshaft. Install seal guide (BMW special tool 11 2 385) over the end of the crankshaft. Be sure to align the groove with the keyway on the crankshaft (arrow). Install oil seal puller (BMW special tool 11 2 380) and screw in the body of the puller until it contacts the seal. Tighten the bolt in the center of the tool to draw the seal out of the cover. Coat the new seal with oil and position it in the timing chain cover. Use BMW special tool 11 3 280 and the crankshaft center bolt to draw the seal in flush with the timing case cover. Reinstall the crankshaft vibration damper and pulley. The remainder of the installation is the reverse of removal, noting the following: Install engine accessory belts. Install the cooling fan.
Shaft Seal
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Q: What does the process of replacing a rear crankshaft seal involve in a V8 engine on a BMW X5?
A:
Crankshaft rear main seal replacement involves removing the transmission and flywheel, followed by draining the engine oil. Next, remove the bolts holding the rear main seal carrier, including those at the oil pan, and carefully separate the seal carrier from the oil pan gasket without damaging it. BMW provides a kit for the rear main seal carrier and seal. When installing the new seal carrier to the crankcase, check the locating sleeves for damage, replace the gasket between the rear main seal carrier and crankcase, apply a thin coat of 3-Bond® 1209 or equivalent sealant to the oil pan gasket sealing surfaces, and lubricate the crankshaft and seal contact surfaces. Use BMW special tool 11 2 390 to guide the installation of the seal over the end of the crankshaft, ensuring the seal carrier and support bushing are pressed straight without tilting, and remove the installation guide carefully. Replace the sealing washers under the seal carrier mounting bolts, install the bolts, and torque them to specifications before installing the oil pan bolts. The assembly process is the reverse of disassembly, which includes installing the flywheel, torque converter, and transmission, filling the engine with oil, and running the engine to check for leaks.