Mitsubishi Lancer Evolution IX. Manual — part 294
TRANSMISSION
MANUAL TRANSMISSION OVERHAUL
22B-21
CAUTION
In the following steps, make sure to use the same
O-rings that were removed during disassembly.
7. Install the control assembly and tighten its bolts to
the specified torque.
8. With the gear shifted into 2nd gear, raise the main
shaft and install the snap ring tightly on the main
shaft rear bearing.
NOTE: Refer to CONTROL ASSEMBLY INSTAL-
LATION for the method for shifting the gear into
2nd.
9. Return the control assembly to the neutral
position and remove its mounting bolts. Remove
the control assembly.
10.Remove the transmission case.
11.Remove the snap ring from the main shaft rear
bearing, then remove the transmission case.
12.Remove the crushed pieces of solder.
13.If the solder has not been crushed at all:
(1) In the case of the input shaft rear bearing and
the main shaft rear bearing, use the thicker
solder (1.6 mm diameter, about 10 mm long)
and repeat steps 4 to 12.
(2) In the case of the reverse idler gear, use the
thicker shim and repeat steps 4 to 12.
AK301249
14.Use a micrometer to measure the thickness of the
each crushed solder beads and record the each
measured value.
15.Select each shim with the thickness calculated by
the following formula that will adjust each end play
to a value within the standard value range.
(1) In the case of the input shaft rear bearing and
the main shaft rear bearing:
Shim thickness: (T1
− 0 mm) to (T1 − 0.06
mm)
T1: The crushed solder thickness mm
Standard input shaft end play: 0 mm
− 0.06
mm
Standard main shaft end play: 0 mm
− 0.06
mm
(2) In the case of the reverse idler gear:
Shim thickness: (T1 + T2
− 0.04 mm) to (T1 +
T2
− 0.10 mm)
T1: The crushed solder thickness mm
T2: The shim thickness used for measure-
ment mm
Standard reverse idler gear end play: 0.04
mm
− 0.10 mm
<Measurement using Plastigage>
AK204380AF
Plastigage
1. Put the plastigage (about 10 mm long) on the
input shaft rear bearing as indicated in the
illustration. Install the adjusting shim having
minimum thickness.
AK204385
Plastigage
AF
2. Put the plastigage (about 10 mm long) on the
main shaft rear bearing fitting surface in the
transmission case as indicated in the illustration.
Install the adjusting shim having minimum
thickness.
AK204386AF
Plastigage
TRANSMISSION
MANUAL TRANSMISSION OVERHAUL
22B-22
3. Put the plastigage (about 10 mm long) on the
surface of the reverse idler gear mounting boss in
the transmission case as indicated in the
Illustration. Install the adjusting shim having
minimum thickness.
4. Install the snap ring temporarily in the main shaft
rear bearing location in the transmission case.
5. Install the adjusting thrust washer having the
minimum thickness.
6. Expand the snap ring in the main shaft rear
bearing location through the bore plug mounting
hole, and place the transmission case over the
clutch housing.
AK204378AC
A
A
A
A
A
A
A
A
A
A
B
B
B
B
B
B
B
B
B
A
A
Bolt colors
A: Yellow
B: Black
CAUTION
In the following step, use the same transmission
case bolts that were removed during disassem-
bly.
7. Install and tighten the transmission case bolts to
the specified torque.
AK204384
AK204384AC
1
2
CAUTION
In the following steps, make sure to use the same
O-rings that were removed during disassembly.
8. Install the control assembly and tighten its bolts to
the specified torque.
9. With the gear shifted into 2nd gear, raise the main
shaft and install the snap ring tightly on the main
shaft rear bearing.
NOTE: Refer to CONTROL ASSEMBLY INSTAL-
LATION for the method for shifting the gear into
2nd.
10.Return the control assembly to the neutral
position and remove its mounting bolts. Remove
the control assembly.
11.Remove the transmission case.
12.Remove the snap ring from the main shaft rear
bearing, then remove the transmission case.
13.Remove the crushed pieces of plastigage.
14.If the plastigage has not been crushed at all, use
thicker adjusting shim and repeat steps 4 to 13.
AK402081
Plastigage
Shim
AI
15.Measure the width of the each crushed plastigage
at its widest part using a scale printed on the
plastigage package and record the each
measured value.
16.Select each shim with the thickness calculated by
the following formula that will adjust each end play
to a value within the standard value range.
(1) In the case of the input shaft rear bearing and
the main shaft rear bearing:
Shim thickness: (T2 + T3
− 0 mm) to (T2 + T3
− 0.06 mm)
T2: The shim thickness used for measure-
ment mm
T3: The crushed plastigage thickness mm
Standard input shaft end play: 0 mm
− 0.06
mm
Standard main shaft end play: 0 mm
− 0.06
mm
(2) In the case of the reverse idler gear:
Shim thickness: (T2 + T3
− 0.04 mm) to (T2 +
T3
− 0.10 mm)
T2: The shim thickness used for measure-
ment mm
T3: The crushed plastigage thickness mm
Standard reverse idler gear end play: 0.04
mm
− 0.10 mm
TRANSMISSION
MANUAL TRANSMISSION OVERHAUL
22B-23
INSPECTION
M1222001100156
BACK LIGHT SWITCH
AK501906
1. Check the back light switch for proper continuity
between the terminals.
Item
Continuity
Press switch
Yes
Release switch
No
2. Replace the backlight switch if the continuity is not
as indicated above.
OIL TEMPERATURE SENSOR
AK501915
1. Measure the resistance of the oil temperature
sensor in order to check of operation of it.
Temperature (
°C)
Resistance (k
Ω)
0
5.790
20
2.45
± 0.14
40
1.148
60
0.5865
80
0.3222
100
0.1884
2. Replace the oil temperature sensor if the
continuity is not as indicated above.
FORK ROD / REVERSE LEVER
ASSEMBLY / SHIFT FORK
AK204455AC
Fork rod
Reverse lever assembly
Shift fork
1. Inspect contacting and rubbing surfaces for
excessive wear, damage, bend, or other defects.
Replace if necessary. (Parts with slight contact
marks need not be replaced.)
AK204454AC
Wear on
one side
Original finger
tip width
Wear on
one side
2. Check if the width of each shift fork finger tip
(which rubs against the coupling sleeve) is greater
than the limit.
Item
Limit for wear
on one side
mm
Original finger
tip width mm
1st-2nd shift
fork
0.2
7.80
− 7.93
3rd-4th shift fork 0.2
7.80
− 7.93
5th-6th shift fork 0.2
6.10
− 6.23
Reverse shift
fork
0.2
12.80
− 12.93
INPUT SHAFT
MANUAL TRANSMISSION OVERHAUL
22B-24
INPUT SHAFT
DISASSEMBLY AND REASSEMBLY
M1222001600162
AK204089
AK204089AC
14
15
16
17
19
18
20
21
2
1
3
6
5
7
12
13
10
4
8
21
22
25
24
9
11
23
8
22
26
27
28
29
30
31
32
Apply gear oil to
all moving parts
before installation.
Disassembly steps
<<A>>
1. Input shaft rear bearing
2. Snap ring
<<B>>
3. 6th gear sleeve
<<B>>
4. Needle roller bearing
<<B>>
5. 6th gear
6. Synchronizer ring
<<C>>
7. 5th-6th synchronizer assembly
8. Synchronizer spring
9. Synchronizer sleeve
10. Synchronizer key
11. 5th-6th synchronizer hub
<<C>>
12. Synchronizer ring
<<C>>
13. 5th gear
14. Needle roller bearing
<<D>>
>>F<<
15. 5th gear sleeve
<<D>>
>>E<<
16. Thrust washer
<<D>>
17. 4th gear
<<D>>
18. Needle roller bearing
<<D>>
19. 4th gear sleeve
<<D>>
20. Synchronizer ring
<<D>>
21. 3rd-4th synchronizer assembly
22. Synchronizer spring
23. Synchronizer sleeve
24. Synchronizer key
25. 3rd-4th synchronizer hub
<<D>>
26. Synchronizer outer ring
<<D>>
27. Synchronizer cone
<<D>>
28. Synchronizer inner ring
<<D>>
29. 3rd gear
30. Needle roller bearing
<<E>>
31. Ball bearing
32. Input shaft
Disassembly steps (Continued)
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