How to replace the rear crankshaft seal on Cadillac DeVille?

One should remove the Flywheel before starting the crankshaft rear oil seal replacement process. Set the crankshaft rear oil seal remover (J 42841) on the crankshaft before fastening it with retaining bolts. A variable speed drill motor together with a socket adapter drives eight one-inch self-drilling screws through the guide holes in the removal tool into the seal while gradually decreasing drill speed during screw threading. After screw installation the retaining bolts can be removed to attach the center screw which will pull the Crankshaft Seal assembly from the shaft. The new crankshaft rear oil seal installation requires a debris-free drain area to avoid oil leaks. The crankshaft rear oil seal drain must be cleaned using wire or an unbound plastic tie-wrap while applying gm p/n 12345501 or equivalent clean engine oil to coat the cylinder block crankshaft rear oil seal area's outer diameter. Keep the new crankshaft rear oil seal free from green coating that lines its inner diameter. Clean your Flywheel flange with a lint-free cloth while applying clean engine oil to the new seal's external rubber surface. The crankshaft rear oil seal installer (J 42842) requires its center hub to extend past the outer plate by one-half inch before placement onto the crankshaft while the three mounting bolts should be threaded into the crankshaft flange. Secure the j42842 with bolt tightening then install the crankshaft rear oil seal by advancing the center bolt until the j42842 reaches full contact with the crankcase. You must loosen the center bolt while keeping pressure minimal. Next tighten the mounting bolts on the crankshaft flange before fully removing the j 42842. The installation depth surrounding the crankshaft rear oil seal needs inspection. If installation depths are unequal, reinstall the j 42842 before redoing the installation process. Finally, reinstall the Flywheel.

OEM Cadillac DeVille Crankshaft Seal

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8 Crankshaft Seals found

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Cadillac DeVille Rear Main Seal Part Number: 10088158
$34.26 MSRP: $56.44
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Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal; Cover Seal; Rear Main Seal Retainer
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984 Cadillac DeVille | Base, Cabriolet, d'Elegance | 8 Cyl 4.1 L GAS
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Cadillac DeVille Rear Main Seal Part Number: 12568025
$53.23 MSRP: $90.63
You Save: $37.40 (42%)
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Product Specifications
- Other Name: Seal, Crankshaft Rear Main Bearing Cap; Crankshaft Seal; Seal, Engine Rear Main Bearing
- Position: Rear
- Replaces: 12556355, 12556107
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-2005 Cadillac DeVille | Base, Concours, d'Elegance, DHS, DTS, Protection Series | 8 Cyl 4.6 L GAS
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Cadillac DeVille Oil Seal, Front Part Number: 12556109
$14.48 MSRP: $27.19
You Save: $12.71 (47%)
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Product Specifications
- Other Name: Seal Assembly-Crankshaft Front Oil; Timing Cover Gasket; Timing Cover Seal; Crankshaft Seal; Front Cover Seal; Seal, Engine Front Cover & Crankshaft Seal; Seal, Engine Front Cover
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Cadillac DeVille | Base, DHS, DTS, Protection Series | 8 Cyl 4.6 L GAS
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Cadillac DeVille Rear Main Seal Part Number: 1627806
$19.77 MSRP: $39.73
You Save: $19.96 (51%)
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Product Specifications
- Other Name: Seal, Crankshaft Rear Main Bearing Cap; Crankshaft Seal; Seal, Engine Rear Main Bearing
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1995 Cadillac DeVille | Base, Cabriolet, d'Elegance, Spring Edition, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 4.5 L GAS, 8 Cyl 4.9 L GAS
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Cadillac DeVille Rear Main Seal Part Number: 1647308
$31.26 MSRP: $48.96
You Save: $17.70 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal; Crankshaft Seal; Seal, Engine Rear Main Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1997 Cadillac DeVille | Base, Concours, d'Elegance | 8 Cyl 4.6 L GAS
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Cadillac DeVille Oil Seal Part Number: 552711
Product Specifications
- Other Name: Seal Assembly-Crankshaft Oil; Timing Cover Gasket; Timing Cover Seal; Crankshaft Seal; Front Crank Seal; Timing Cover Oil Seal; Front Cover Seal; Seal, Engine Front Cover & Crankshaft Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1985 Cadillac DeVille | Base, Cabriolet, d'Elegance | 6 Cyl 4.3 L DIESEL, 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac DeVille Crankshaft Seal, Front Part Number: 1647311
Product Specifications
- Other Name: Seal, Engine Front Cover; Timing Cover Gasket; Timing Cover Seal; Timing Cover Oil Seal; Cover Seal; Front Cover Seal; Seal, Engine Front Cover & Crankshaft Seal
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-2002 Cadillac DeVille | Base, Concours, d'Elegance, DHS, DTS, Touring | 8 Cyl 4.6 L GAS, 8 Cyl 4.9 L GAS
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Cadillac DeVille Rear Main Seal Part Number: 1627821
Product Specifications
- Other Name: Seal; Crankshaft Seal; Seal, Engine Rear Main Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984 Cadillac DeVille | Base, Cabriolet, d'Elegance | 8 Cyl 4.1 L GAS

Cadillac DeVille Crankshaft Seal

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The Crankshaft Seal in Cadillac DeVille automobiles is the component situated at the forward part of the motor, the main goal of which is to prevent the oil leakage from the crankcase. This round seal used in many vehicles normally fabricated of a metal with rubber content serves a vital function that is to maintain a constant flow of lubricant to the engines hence reduces friction and shortens the wear and tear of some body parts of the engine. Different Crankshaft Seal designs may have been used in Cadillacs DeVille model throughout its production up to date but the basic working has remained the same. The symptoms that suggest that a Crankshaft Seal is failing include oil leakage and some performance problems especially in high mileage cars, a clue that the seal needs to be replaced in order to achieve good functionality of the engine.

Cadillac DeVille Crankshaft Seal Parts Questions & Experts Answers

Rear Main Seal
12568025
Q: How to replace the rear crankshaft seal on Cadillac DeVille?
A:
One should remove the Flywheel before starting the crankshaft rear oil seal replacement process. Set the crankshaft rear oil seal remover (J 42841) on the crankshaft before fastening it with retaining bolts. A variable speed drill motor together with a socket adapter drives eight one-inch self-drilling screws through the guide holes in the removal tool into the seal while gradually decreasing drill speed during screw threading. After screw installation the retaining bolts can be removed to attach the center screw which will pull the Crankshaft Seal assembly from the shaft. The new crankshaft rear oil seal installation requires a debris-free drain area to avoid oil leaks. The crankshaft rear oil seal drain must be cleaned using wire or an unbound plastic tie-wrap while applying gm p/n 12345501 or equivalent clean engine oil to coat the cylinder block crankshaft rear oil seal area's outer diameter. Keep the new crankshaft rear oil seal free from green coating that lines its inner diameter. Clean your Flywheel flange with a lint-free cloth while applying clean engine oil to the new seal's external rubber surface. The crankshaft rear oil seal installer (J 42842) requires its center hub to extend past the outer plate by one-half inch before placement onto the crankshaft while the three mounting bolts should be threaded into the crankshaft flange. Secure the j42842 with bolt tightening then install the crankshaft rear oil seal by advancing the center bolt until the j42842 reaches full contact with the crankcase. You must loosen the center bolt while keeping pressure minimal. Next tighten the mounting bolts on the crankshaft flange before fully removing the j 42842. The installation depth surrounding the crankshaft rear oil seal needs inspection. If installation depths are unequal, reinstall the j 42842 before redoing the installation process. Finally, reinstall the Flywheel.