Mitsubishi Evolution X. Manual - part 595

TPMS TRANSMITTER

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KEYLESS OPERATION SYSTEM (KOS)

42B-287

<<C>> SEAL/SEAL WASHER REMOVAL

CAUTION

• Do not vary the angle of valve except at mounting on 

the rim. If varying the angle over and over, it may cause 
breakage of antenna plate resulting in the failure of 
TPMS transmitter.

• Use a soft tool to remove the grommet and washer to 

prevent scratching the valve of the TPMS transmitter.

1. Hold the TPMS transmitter and the seal washer, then extract 

it, this also extracts the seal. Take care to not damage the 
valve thread.

2. Clean the TPMS transmitter and the valve stem holding the 

valve as shown. Take care to support the rear of the valve 
with a thumb so that there is no movement of the stem.

INSTALLATION SERVICE POINTS

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>>A<< SEAL/SEAL WASHER/TPMS TRANSMIT-
TER/NUT INSTALLATION

CAUTION

When installing a new seal and seal washer, make sure to 
support the valve stem base with a thumb so that there is 
no movement of the stem. Otherwise, the stem may pro-
trude resulting in the breakage of antenna plate.
1. Insert these up to the base of the TPMS transmitter, making 

sure to secure the valve base with a thumb, as shown.
Wipe the seal and threading.

AC609528AB

Seal washer

Seal

AC609529

AC609530AB

Seal washer

Seal

TPMS TRANSMITTER

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KEYLESS OPERATION SYSTEM (KOS)

42B-288

CAUTION

• Visually check that TPMS transmitter is not deformed 

or damaged.

• When installing the TPMS transmitter, be sure the rim, 

seal valve and nut are clean.

• Ensure the grommet is located inside the valve hole 

before installing the nut.

• While installing the nut, push the TPMS transmitter to 

maintain the lower lip of the transmitter case is in con-
tact with the rim without clearance.

• While installing the valve nut, ensure the tool is kept 

aligned to the valve and the valve hole.

• After installing the nut, check that the seal is com-

pressed and seal washer is bend.

2. Install the valve, in the valve hole, without modifying the 

angle of the stem (retain position of delivery). The laser 
marking should be visible at the operator.

3. When the valve is completely inserted, maintain the TPMS 

transmitter in contact with the rim, then screw manually the 
nut until the contact with the wheel.

4. While maintaining the TPMS transmitter contact with the rim 

by applying pressure to the back of the valve, slightly press 
on the cap to wards the center of the wheel in order to adapt 
the angle of the valve/TPMS transmitter to the profile of the 
rim.
It is mandatory to guarantee the contact of the housing unit 
on the rim drop center.

AC609515

AC609516

AC609517AB

TPMS TRANSMITTER

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KEYLESS OPERATION SYSTEM (KOS)

42B-289

5. While maintaining the TPMS transmitter and valve in 

position, screw the nut with a torque wrench.
Take care that the wrench socket is correctly inserted on the 
nut.

Specified torque: 8.0 

± 0.5 N⋅ m (71 ± 4 in-lb)

.

>>B<< TIRE BEAD MOUNTING

1. Prepare the tire and fix the rim as usual.

2. Put the tire on the rim, so that the cross point of the belt with 

the rim is approximately 20 cm (7.9 inch) away from the 
valve.

3. Engage the shoe and make sure that 20 cm (7.9 inch) is 

maintained between the cross point and the valve.
The arrow shows the direction of rotation of the wheel.

AC609531AB

AC609532

AC609533AB

AC609534

TPMS TRANSMITTER

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KEYLESS OPERATION SYSTEM (KOS)

42B-290

4. Turn the wheel in order to engage all the first side of the tire.

NOTE: The standard shoes can pass over the sensor with-
out damaging it.

5. Put the second side of the tire in position, so that the cross 

point of the belt with the rim is approximately 20 cm (7.9 
inch) away from the valve. The curved arrow shows the 
direction of rotation of the wheel.

6. Turn the wheel in order to engage all of the second side of 

the tire.
NOTE: The standard shoes can pass over the sensor with-
out damaging it.

.

>>C<< TIRE PRESSURE INFLATION/NUT 
RETIGHTENING

CAUTION

After tire inflation, retighten the valve nut to 8.0 

± 0.5 N⋅ m 

(71 

± 4 in-lb). This is necessary, because the TPMS trans-

mitter is secured to the wheel with the valve nut and rub-
ber grommet. The rubber grommet will be depressed by 
tire pressure or deteriorate over a period of time, which 
requires the valve nut to be retightened.
Inflate tire to required pressure, then retorque the valve nut to 
8.0 

± 0.5 N⋅ m (71 ± 4 in-lb).

AC609535

AC609536 AB

AC609537