Disassembly and Assembly Instructions

Disassembly and assembly instructions












Disassembly





1. Clamp the differential lock into the vice using special tool 9646 and unscrew the crown wheel screws.
2. Mark installation position of lid in relation to housing for retrofitting.
3. Unscrew countersunk screws (no. 7), remove lid and take out all inner parts. Mark thrust rings for refitting.

Assembly

Note!
^ Always replace the complete disc pack in the case of repairs.

Replacing individual discs is not permitted.
1. Lightly oil all surfaces of the discs, thrust rings and axles with transmission oil.





2. Install cup springs so that the cambers point inwards to the disc pack.
A Cup spring
B Outer disc
C Inner disc
D Thrust plate





3. After assembly, measure the basic locking torque with one shaft bevel gear driven and the other one fixed. To do this, clamp one flange in the vice with two screws and position differential. Insert second flange with shop-made connecting piece and turn differential with a torque screwdriver. A basic locking torque of 5... 15 Nm (3.5... 11 ft. lbs.) must be reached.