33 10 030

Important!

Only liquid sealing compound may be used!
To prevent the final drive oil from foaming over, make sure that no remnants of the liquid sealing compound are pressed into the rear axle differential housing.
Use only the approved transmission oil.
Failure to comply with this instruction will result in serious damage to the rear axle differential.

Necessary preliminary work:

Drain final drive oil.
Remove rear axle final drive.

Removal:

Replacing oil sump on rear axle differential (220M) BMW M2 F87

Release screws (1).
Remove the front holder (adapter) (2).

Replacing oil sump on rear axle differential (220M) BMW M2 F87

Release screws along the dotted line (1).
Remove oil sump (2).

Installation:

Replacing oil sump on rear axle differential (220M) BMW M2 F87

Replacing oil sump:
Release temperature sensor (1) and screw in into new oil sump.

Tightening torque 33 11 4AZ:

Type Thread Tightening specifications Torque
1AZ Oil sump to rear axle differential
F80 / F82 / F83 / F87 M6 12 Nm
2AZ Side lid to rear axle differential
F80 / F82 / F83 / F87 M8 Tighten screws crosswise. 32 Nm
3AZ Complete servomotor on rear axle
F80 / F82 / F83 / F87 M6 10 Nm
4AZ Temperature sensor to oil sump
F80 / F82 / F83 / F87 14 Nm
5AZ Screw plug with O-ring
F80 / F82 / F83 / F87 Replace screw plug. 45 Nm
6AZ Servomotor on input flange
F80 / F82 / F83 / F87 M5 9 Nm

Replacing oil sump on rear axle differential (220M) BMW M2 F87

Clean sealing surface (1) on oil sump and rear axle differential.

If necessary, remove remnants of liquid sealing compound with scraper.

Part: Liquid seal.

Apply the liquid seal on the sealing surface (1) of the oil

sump.

Installation note:

The liquid sealing compound can be found in Main Group

33 in the Electronic Parts Catalogue.

Replacing oil sump on rear axle differential (220M) BMW M2 F87

Align the oil sump on the rear axle differential.

Tighten the screws along the dotted line (1).

Tightening torque 33 11 1AZ.

Replacing oil sump on rear axle differential (220M) BMW M2 F87

Align the front holder (adapter) (2) on the rear axle differential.

Part: Replace screws (1).

Tighten down screws (1).

Tightening torque 33 17 1AZ:

Type Thread Tightening specifications Torque
1AZ Front rear axle differential holder (adapter) to rear axle differential
F80 / F82 / F83 / F87 M12 120 Nm
2AZ Front rear axle differential holder (adapter) to rear axle support
F80 / F82 / F83 / F87 M12 Renew screw. 120 Nm
3AZ Rear differential to rear axle carrier, rear
F80 / F82 / F83 / F87 M14 Renew screw. 210 Nm
4AZ Vibration absorber to screw connection of rear axle differential, rear
F80 / F82 / F83 / F87 M8 Renew screw. 19 Nm
5AZ Rear rear axle differential holder (adapter) to rear axle differential
F80 / F82 / F83 / F87 M12 120 Nm

Required follow-up work:

Install the rear axle differential.
Add final drive oil.