Differential Case B Installation

Before starting the assembly procedure, perform the following steps to adjust dimensional differences (clutch plate friction force) in the axial direction of the components inside the differential case and axial clearance of the differential side gear.

1. Place friction discs (two each) and friction plates (three each) one on top of another as illustrated and, using a micrometer, measure the thickness of each of the right and left assemblies. Select different discs and plates so that the difference between the right and left assemblies falls within the specified range.

   Standard value: 0 - 0.05 mm (0 - 0.002 inch) 

   NOTE: If a new part is used, note that the friction disc comes in two thickness: 1.6 5mm (0.065 inch) and 1.75 mm (0.069 inch).
   Fig 1: Measuring Thickness Of Right And Left Spring Plates

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2. Measure the thickness of each of the right and left spring plates.
3. Assemble the pressure ring internal parts (pinion shaft and pressure ring), friction plates, and friction discs and, using a micrometer, measure the overall width.
   NOTE: When taking measurements, press the assembly from both sides so that the pinion shaft makes a positive contact with the groove in the pressure ring.
4. Find value (A) which is the thickness measured in step (3) added to the thickness of two spring plates.
5. Find dimension (B) between the spring plate facing surfaces when differential case A and B are assembled together.

   B = C + D - E

   Fig 2: Identifying Differential Case Groove

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6. If the clearance between the spring plate and differential case (B - A) is outside the specified range, change the friction discs and make adjustments.

   Standard value: 0.06 - 0.25 mm (0.002 - 0.010 inch) 

   Fig 3: Checking Clearance Between Spring Plate And Differential Case

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7. Coat each part with the specified gear oil and mount it in the specified direction and order into differential case B.

   Specified gear oil: MITSUBISHI Genuine DIA QUEEN LSD gear oil 

   NOTE: Apply a careful coat of gear oil to the contacting and sliding surfaces.
   Fig 4: Identifying Spring Plate, Friction Plate And Friction Disc

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   CAUTION: When installing the pressure ring into the differential case B, the groove should be faced in the direction shown in the illustration. Otherwise it may cause a malfunction.
8. Mount each part in the specified direction and order into differential case B.
   Fig 5: Identifying Differential Case Groove

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.