Dismantling and Assembling Limited Slip Differential

Dismantling and Assembling Limited Slip Differential





Disassembled View (Part 1 of 2)





Disassembled View (Part 2 of 2)

Type K
Final Drive Removed
Removing limited-slip differential, refer to 33 14 520





Unscrew case cover mounting bolts. Take off case cover.





Carefully allow the components to slide out of the housing.

Check all parts for wear, e.g. molybdenum coating, gears.

Installation:
Lubricate all parts with approved final drive oil before assembling.

Install following parts in correct installed order to measure the preload:
Outer plates (5), inner plates (6), thrust rings (7), differential side gears (8) and differential gears with differential shafts (9).





Measure dimension A from edge of housing to outer disc, e.g. A = 10.8 mm.





Measure dimension B on cover, e.g. B = 6.8 mm.





Place both diaphragm spring curved surfaces together.
Measure dimension C on the plate springs, e.g. C = 3.6 mm.





To ensure that the plate springs are not block-preloaded, installation clearance of 0.1 ... 0.4 mm is required.

Example: B (cover) 6.8 mm C (plate spring) 3.6 mm A (housing) 10.8 mm Sum total of B + C 10.4 mm Installation clearance D 0.4 mm Correct any deviation in installed clearance D by installing outer plates of correct thickness.





Remove all parts from case and insert with the additional parts, diaphragm springs (2) and thrust washers (3).

Mount case cover (1) and press on firmly, but do not bolt.

The preload of small diaphragm springs (2) should produce an uniform gap all around (check with feeler gage blade).

If there is no clearance between cover and case, check diaphragm springs (2) and thrust washers (3).





Installation:
Diaphragm spring (2) with inside curved surface facing differential shaft (up).
Insert thrust washer (3) with oil pockets facing up to differential shaft,





Installation:
Insert diaphragm spring (4) with inside curved surface facing differential shaft and outer plate (5) with four tabs.
Insert molybdenum coated inner plate (6) and thrust ring (7).





Installation:
Install differential side gear (8) by turning into guides or splines of inner plate.
Install differential gears with shafts (9) and a second differential side gear (8).





Installation:
Install thrust ring (7), molybdenum coated inner plate (6) and outer plate (5).
Insert diaphragm spring (4) with inside curved surface facing differential shaft (down).





Installation:
Install diaphragm spring (2) with inside curved surface facing up and thrust washer (3) with oil pockets facing up in case cover, using grease.





Installation:
Mount case cover with washers (being careful that washers do not slide out).

Install bolts with Loctite No. 270 and tighten cover uniformly.
Tightening torque, refer to Technical Data





Check slip torque of limited slip differential, refer to Technical Data, with one secured rear wheel and one driven rear wheel.

Make up tool locally for this purpose by, for example, welding a nut on a drive flange which is no longer required.