Mitsubishi Lancer Evolution-IV Workshop Manual page 231

27-48
REAR AXLE
MB990990
MB990989
Friction disc
Friction plate
Pressure ring
– LSD Case Assembly <Vehicles without AYC>
"BA SCREW TIGHTENING
(1) Align the alignment mark on differential case A with that
(2) Tighten the screws connecting differential case A and
"CA LSD DIFFERENTIAL TORQUE CHECK
(1) Using the special tool, check for differential torque.
(2) If the measurement falls outside the specified range,
INSPECTION
1. DIFFERENTIAL CASE INTERNAL PARTS
(1) Clean the disassembled parts with cleaning oil and dry
(2) Check each plate, disc, and pressure ring for the following:
Spring plate
on differential case B.
B a uniform amount little by little in the diagonal order.
NOTE
If tightening the screws does not bring the two cases
properly together, spring plates are not probably
assembled properly. Reassemble from the start.
Standard value:
When new clutch plate is
installed Nm {kgf@m}
5 – 19 {0.5 – 1.9}
NOTE
Before measuring the differential torque, first turn the
gears so they snug each other, then take measurements
during rotation.
disassemble the differential case assembly and repair
or replace defective parts.
CONTACT/SLIDING SURFACE CHECK
them with compressed air.
A. Friction and sliding surfaces of friction discs, friction
plates, and spring plates.
Replace a defective part with heat discoloration and
excessive wear with a new one, as it degrades locking
performance.
NOTE
If the inner periphery of the friction face shows traces
of harsh contact, it is because of the spring tension
of each plate, disc and other part. Do not confuse
this with abnormal wear.
B. Inner periphery and outer periphery protrusions of
friction discs, friction plates, and spring plates.
Replace a cracked or damaged part with a new one.
C. Friction and sliding surfaces between pressure rings
and friction discs.
When existing clutch plate is
reused Nm {kgf@m}
2 – 19 {0.2 – 1.9}