31 51 010 Replacing Radial Seal For Drive Flange of Front Differential

31 51 010 Replacing radial seal for drive flange of front differential

Special tools required:





Necessary preliminary work:
^ Remove reinforcement plate
^ Remove front propeller shaft





Mark position of nut with respect to shaft with punch marks (arrow).

Lever out retainer (1) with a suitable tool.

Important!
Risk of damage!
Do not place special tool on threaded holes of drive flange.





Secure drive flange with special tool 23 0 020 against turning and release nut (1).

Important!
Risk of damage!
Mount special tool only with longer screws (M10x30) on drive flange.





Pull drive flange off drive shaft with special tool 33 1 150.





Lever radial shaft seal (1) out of front differential with a suitable screwdriver (2).





Installation note:
Drive in radial shaft seal with special tool 31 5 130 as far as it will go.

Coat sealing lips of new radial shaft seal (1) with front axle oil.

Important!
Risk of damage!
Do not tighten nut beyond punch marks. Otherwise the clamping sleeve will be damaged.





Clean drive flange and attach.

Tighten down nut until punch marks on nut and shaft are aligned.

Install new retainer (1).





After installation:
^ Check front axle gearbox oil level, correct if necessary.