2007 MITSUBISHI LANCER EVOLUTION Service Repair Manual

STEERING -Steering Shaft37A-15
DISASSEMBLY AND REASSEMBLY
1
2
3 4
5 6
7
Disassembly steps
AA""AA1. Special bolt
"AA2. Steering lock bracket
"AA3. Steering lock cylinder assembly
4. Snap ring5. Steering shaft assembly
6. Tilt spring
7. Steering column assembly
DISASSEMBLY SERVICE POINT
AA"SPECIAL BOLT REMOVAL
1. Drill in the special bolt a hole deep enough for the tap
to stand.
2. Remove the special bolt with a left-hand tap.
REASSEMBLY SERVICE POINT
"AASTEERING LOCK CYLINDER ASSEMBLY/
STEERING LOCK BRACKET/SPECIAL BOLT
INSTALLATION
1. When installing the steering lock cylinder assembly and
steering lock bracket to the steering column assembly,
temporarily install the steering lock in alignment with the
column boss.
2. Check that the steering lock works properly. Then, tighten
the special bolts until the heads twists off.
Steering lock
bracket
Steering lock body
Special boltLeft-hand tap

STEERING - Power Steering Gear Box and Linkage37A-16
POWER STEERING GEAR BOX AND LINKAGE
REMOVAL AND INSTALLATION
Caution: SRS
Before removing steering gear box, refer to GROUP 52B. Also, put the front wheels in straight-ahead
position. Failure to do so may damage the SRS clock spring and render the SRS air bag inoperative,
which results serious driver injury.
Caution
If the vehicle is equipped with the Brembo disc brake, during maintenance, take care not to contact
the parts or tools to the caliper because the paint of caliper will be scratched. And if there is
brake fluid on the caliper, wipe out quickly.
Pre-removal Operation
DClock Spring Removal (Refer to GROUP 52B.)
DPower Steering Fluid Draining (Refer to P.37A-9.)Post-installation Operation
DClock Spring Installation (Refer to GROUP 52B.)
DPower Steering Fluid Supplying and bleeding
(Refer to P.37A-9.)
DChecking Steering Wheel Position with Wheels
Straight Ahead

17
6
3 4
57±7 N·m5
8
70±10 N·m
2
15±3 N·m
9
10
12±2 N·m 12±2 N·m
70±10 N·m
Removal steps
1. Crossmember
(Refer to GROUP 32.)
DRear roll stopper(Refer to GROUP 32.)
2. Joint cover grommet
3. Return hose
4. Return tube5. O ring
6. Return tube
7. Eye bolt
8. Pressure hose assembly
9. Clamp
10. Steering gear and linkage

STEERING - Power Steering Gear Box and Linkage37A-17
17 6 2
3 4
15±3 N·m
57±7 N·m
5
70±10 N·m

Removal steps
1. Crossmember
(Refer to GROUP 32.)
2. Joint cover grommet
3. Return hose connection4. Return tube
5. Pressure hose connection
6. Clamp
7. Steering gear and linkage
INSPECTION
GEAR BOX PINION TOTAL ROTATION TORQUE CHECK
Caution
Secure the steering gear box and linkage in their mounting
positions only. Otherwise, deformation or damage could
result.
1. Using the special tool, turn the pinion gear at a speed
of one rotation per 4 to 6 seconds to measure total rotation
torque.
Standard values:
Total rotation torque: 0.8 – 1.8 N·m
Torque fluctuation: 0.49 N·m or less
NOTE
(1) Remove the bellows from the rack housing before
measuring.
(2) Measure the total rotation torque by turning the special
tool left and right 180_from the neutral position.
2. If the standard values are not met, adjust the pinion total
rotation torque. (Refer to P.37A-26.)
3. In case the adjustment is impossible, disassemble and
check the components, and repair if necessary.
MB991006

STEERING - Power Steering Gear Box and Linkage37A-18
TIE ROD SWING RESISTANCE CHECK
1. Swing the tie rod 10 times hardly.
2. With the tie rod end downwards as shown, use a spring
scale to measure swing resistance (swing torque).
Standard value: 8 - 27 N (1.5 - 4.9 N·m)
3. If the measured value is above the standard value, replace
the tie rod.
4. If below, check the ball joint for looseness or ratcheting.
The tie rod is still serviceable when the ball joint swings
smoothly.
TIE ROD END BALL JOINT DUST COVER CHECK
1. Check the dust cover for cracks or damage by pushing
it with finger.
2. If the dust cover is cracked or damaged, replace the
tie rod end. (Refer to P.37A-19, 20.)
NOTE
A cracked or damaged dust cover may damage the ball
joint. Replace the dust cover when it is damaged during
service work.

STEERING - Power Steering Gear Box and Linkage37A-19
DISASSEMBLY AND REASSEMBLY
31
30
28
11
10
8
97
5
6
29
2618
33
22
20
Flare nut
21
23
36
32 17
1615
14 13
12 3
19
Steering gear seal set
Repair kit grease35
23
21
19
8
1135
17
32 3129
2811
8 3
4 4
27 25
22±4 N·m
25±4 N·m59±10 N·m
88±10 N·m 52±2 N·m
13±3 N·m
1
2 4
23±2 N·m→-30_
59±10 N·m
34
24
4

Disassembly steps
"OA1. Gear mounting rubber cushion
2. Gear housing mounting bushing
3. Feed pipe
4. O-ring
"NA5. Lock nut
"NA6. Tie rod end
7. Clip
"MA8. Band
9. Bellows
"LA10. Tie rod
"LA11. Tab washer
"KADTotal pinion rotating torque adjustment
"JA12. Lock nut
AA""JA13. Rack support cover
14. Support spring
15. Rack support
"IA16. End plug
17. Lock nut18. Valve housing assembly
AB""HA19. Lower oil seal
AB"20. Pinion and valve assembly
AC""GA21. Seal ring
AD""FA22. Upper bearing
AD""FA23. Upper oil seal
24. Valve housing
AE""EA25. Circlip
AF"26. Rack stopper
AF""DA27. Rack bushing
AF""DA28. Oil seal
AF"29. O-ring
AF""CA30. Rack assembly
AC"31. Seal ring
32. O-ring
AG""BA33. Lower bearing
AH""BA34. Needle bearing
AI""AA35. Oil seal
36. Gear housing

STEERING - Power Steering Gear Box and Linkage37A-20
18
24
23
22
21
20
34
36
33
17
1615
14
13
123
19
3523
21
19
8
1135
17
31
3229
2811
8
3
4 4
31
32
27
29
28
26
25
1110
8
9
756
304
22±4 N·m
25±4 N·m
59±10 N·m
59±10 N·m
88±10 N·m
52±2 N·m
23±2 N·m→–30_
13±3 N·m
1 2
4
Flare nut
Steering gear seal set
Repair kit grease3
4

Disassembly steps
"OA1. Gear mounting rubber cushion
2. Gear housing mounting bushing
3. Feed pipe
4. O-ring
"NA5. Lock nut
"NA6. Tie rod end
7. Clip
"MA8. Band
9. Bellows
"LA10. Tie rod
"LA11. Tab washer
"KADTotal pinion rotating torque adjustment
"JA12. Lock nut
AA""JA13. Rack support cover
14. Support spring
15. Rack support
"IA16. End plug
17. Lock nut18. Valve housing assembly
AB""HA19. Lower oil seal
AB"20. Pinion and valve assembly
AC""GA21. Seal ring
AD""FA22. Upper bearing
AD""FA23. Upper oil seal
24. Valve housing
AE""EA25. Circlip
AF"26. Rack stopper
AF""DA27. Rack bushing
AF""DA28. Oil seal
AF"29. O-ring
AF""CA30. Rack assembly
AC"31. Seal ring
32. O-ring
AG""BA33. Lower bearing
AH""BA34. Needle bearing
AI""AA35. Oil seal
36. Gear housing

STEERING - Power Steering Gear Box and Linkage37A-21
Lubrication and Sealing Points
Fluid:
Automatic transmission
fluid DEXRON II
Fluid:
Automatic transmission
fluid DEXRON II
Fluid:
Automatic transmission
fluid DEXRON II
Fluid:
Automatic transmission
fluid DEXRON II
Grease: Repair kit grease
Sealant: 3M ATD part No. 8661,
8663 or equivalent
Fluid:
Automatic transmission
fluid DEXRON II
Grease: Repair kit grease
Fluid:
Automatic transmission
fluid DEXRON II
Grease: Silicone grease

STEERING - Power Steering Gear Box and Linkage37A-22
DISASSEMBLY SERVICE POINTS
AA"RACK SUPPORT COVER REMOVAL
AB"LOWER OIL SEAL/PINION AND VALVE
ASSEMBLY REMOVAL
With a plastic hammer, lightly tap the pinion and valve
assembly in its spline to remove the lower oil seal and pinion
and valve assembly from the valve housing.
AC"SEAL RING REMOVAL
Cut the seal ring to remove from the pinion and valve assembly.
Caution
When cutting the seal ring, be careful not to damage
the pinion and valve assembly.
AD"UPPER BEARING/UPPER OIL SEAL REMOVAL
Using a socket, pull out the upper oil seal and bearing from
the valve housing.
AE"CIRCLIP REMOVAL
1. Turn the rack stopper clockwise until the circlip end comes
out of the slot in the rack housing.
2. Turn the rack stopper anticlockwise to remove the circlip.
Caution
Do not turn the rack stopper anticlockwise first.
Otherwise, the circlip will get caught in the slot in
the housing, which makes the rack stopper unable
to turn.MB991204
Socket
Circlip
Rack stopper