Mitsubishi LANCER EVOLUTION-IV 1998, Workshop Manual, Page: 438 / 526

REAR SUSPENSION –
Upper Arm Assembly
34-7
INSPECTION
1. UPPER ARM BALL JOINT TURNING TORQUE
CHECK
(1) Rock the upper arm ball joint stud several times; then,
mount a nut to the stud and, using the special tool,
measure the turning torque of the upper arm ball joint.
Standard value: 0.5 – 2.5 Nm {5 – 25 kgf
@
cm}
(2) If the measurement exceeds the standard value, replace
the upper arm assembly.
(3) If the measurement falls short of the standard value, check
that the ball joint turns smoothly without excessive play.
If so, the ball joint should still be in good condition for
continued use.
2. UPPER ARM BALL JOINT DUST COVER CHECK
(1) Check the dust cover for cracks or damage by pushing
it with a finger.
(2) If the dust cover is cracked or damaged, replace the
upper arm assembly.
NOTE
A cracked or damaged dust cover can lead to a damaged
ball joint.
If the dust cover is damaged during servicing, replace
it with a new one.
UPPER ARM BALL JOINT DUST COVER
REPLACEMENT
Only when the dust cover is damaged accidentally during
service work, follow these steps to replace it with a new one.
(1) Remove the dust cover.
(2) Pack and apply the specified grease to the inside and
lips of the dust cover.
Molybdenum disulfide-base chassis grease:
SHOWA SHELL SEKIYU SUNLITE MB2, NISSEKI
CLAKNOCK FL, or equivalent
(3) Using the special tool, press the dust cover until it contacts
the snap ring.
(4) Push the dust cover with a finger to ensure that it is
free from cracks or damage.
MB990326
MB990800