Rear Crankshaft Main Bearing Seal: Service and Repair

Replacing The Rear Crankshaft Seal

Special Tools: 999 5112, 999 5651, 999 1801, 999 5678, 999 5676, 951 2050.

NOTE: As the illustrations in this service information are used for different model years and/or models, some variation may occur. However, the essential information is always correct.

Removing The Flywheel And Carrier Plate







- Remove the Transmission
- Remove the flywheel/carrier plate. Use gear sector 999 5112 as a counterhold when slackening off the screws.

Removing The Seal

NOTE: Do not damage the mating surfaces of the crankshaft and cylinder block.

- Remove the old seal using extractor 999 5651.







- Clean around the crankshaft flange at the front and rear. Remove any thread sealant residue from the screw holes.
- If necessary wash off the oil on the rear cylinder block surface and the transmission clutch housing. Blow clean using compressed air.







CAUTION: When cleaning work around the flange, not in and out. No grinding tools or similar may be used.

- It is extremely important that there is no thread sealant residue or other dirt. This could cause leakage.

NOTE: To clean the crankshaft, use cloth 9511024.

Installing The Sealing Ring

CAUTION: Only Volvo approved engine oil may be used. Grease must not be used at all. It attracts dirt and results in the build up of coke.

- Lubricate the sealing ring mating surface against the cylinder block and the lips of the seal.







CAUTION: Hold the drift straight when installing so that the sealing ring is pressed in to the same depth all the way around, reducing the likelihood of leakage.

- Thread the seal onto the beveled part of the inner section of 999 5676 with the felt side of the seal outwards
- Install the drift on the crankshaft
- Tap in the seal using the outer section of drift 999 5676. Use handle 999 1801. The seal is in position when the outer drift bottoms out against the inner drift.

Installing Flywheel And Carrier Plate

CAUTION: Ensure that the surface of the crankshaft and the mating surfaces for the flywheel/carrier plate are clean. Ensure that there is no thread sealant residue in the screw holes.

Install:







- the flywheel and carrier plate
- the 3 studs 999 5678 distributed as shown in the above figure. Turn the short thread length towards the crankshaft.

NOTE: Check that the locating pin on the crankshaft is positioned opposite the hole in the flywheel/carrier plate. The position of the guide hole is marked.

CAUTION: It is important that the flywheel and carrier plate bear on the crankshaft flange before the other screws are installed.

Always use new screws. Ensure that the thread sealant on the new screws is intact. If not apply a few drops of sealant 1161056 to the thread.

- Align gear sector: 999 5112.
- Pull the flywheel/carrier plate towards the crankshaft using the 3 nuts on special tool 999 5678. The turned section of the nut must be turned towards the flywheel/carrier plate.







- Install the other screws. Tighten.
- Replace the 3 special screws with new standard screws. Tighten.
- Then angle-tighten all 10 screws crosswise. Use 951 2050. Tighten.
- Ensure that the flywheel sensor and bracket are installed. Install the clutch driven plate and clutch.

Install The Transmission

Checking The Engine:
Test drive the car to check the function of the engine and the transmission.