Mitsubishi Lancer Evolution 8. Manual — part 180
ENGINE COOLING - THERMOSTAT
14-4
Water hose and pipe
Removal and Fitting
Pre-removal and post-fitting operations
• Removal and fitting of cover
• Draining and filling of coolant
• Removal and fitting of air cleaner ASSY
• Removal and fitting of air by-pass valve ASSY, air by-pass hose, air hose D and E, and air pipe C (ref. Chapter 15 -
Intercooler)
• Removal and fitting of air control valve bracket (ref. Chapter 15 –2 Secondary Air Control System)
Fuel tank ASSY disassembly procedure
1. Radiator upper hose connection
2. Radiator lower hose connection
3. Water temperature gauge unit connector
4. Water temperature sensor connector
5. Water hose
6. Heater hose connection
7. Water outlet fitting & thermostat case ASSY
8. Thermostat case gasket
9. Knock sensor harness clamp
10. Water hose
11. Water hose
12. Heater hose connection
13. Water hose
14. Water inlet pipe
15. O-ring
16. Turbocharger water feed pipe
17. Gasket
• Turbocharger ASSY
18. Turbocharger water return pipe
19. Gasket
Semi-dry sealant:
Three Bond 1207F
A
C
A
C
B
A
A
ENGINE COOLING – WATER HOSE AND WATER PIPE
14-5
REMOVAL
A
Disconnect radiator upper hose /radiator lower hose
Disconnect radiator hoses after having first aligned matching marks on
radiator hose and hose clamp.
FITTING
A
O-ring /water inlet pipe fitting
Insert O-ring into the groove on the water inlet pipe, then insert the pipe
after wetting the area around the circumference of the O-ring or the inner
surface of water inlet pipe where it connects with water
Caution
Make absolutely sure that no engine oil or other grease is adhering
to the O-ring.
B
Water outlet fitting and thermostat case ASSY
1. Remove any sealant adhering to the thermostat case or cylinder head.
2. As shown in the diagram, apply sealant to the cylinder head mounting
surface the thermostat case.
Semi-dry sealant: Three Bond 1207F
3. Fit the water outlet fitting and thermostat case ASSY to the cylinder
head.
Note
Mount the water outlet fitting & thermostat case ASSY on the cylinder
head while the sealant is still moist (within 15 minutes of applying the
sealant).
C
Connecting radiator lower hose/radiator upper hose
1. Insert hoses as far as the protrusion on the water inlet pipe and water
outlet fitting.
2. Connect the radiator hoses, aligning the matching marks on the
radiator hose and hose clamp.
matching mark
Water pump or thermostat case
O-ring
Water inlet pipe
Protrusion
Matching marks
Water inlet pipe or
water outlet fitting
INTAKE & EXHAUST- GENERAL INFORMATION, SERVICING SPECIFICATIONS, ON-VEHICLE SERVICING
15-1
SECTION 15
CONTENTS
General Information
The following servicing information has been issued in conjunction with changes to the 4G63-MPI-T/C engine on the new
Lancer Evolution VIII.
Other servicing information remains the same.
• Change to turbocharger supercharging pressure
• Change to air by-pass valve operation opening pressure
• Change to intercooler
• Change to intercooler water spray hose
• Change to air by-pass valve and air hose
• Deletion of EGR valve and manifold differential pressure (MDP) sensor
Servicing specifications
ON-VEHICLE SERVICING
1. Turbocharger supercharging pressure check
The turbocharger supercharging pressure has been changed.
Standard value: 89 and 138kPa
2. Air by-pass valve check
Air by-pass valve standard value has been changed.
Standard value:
Item
Standard value
Turbocharger supercharging pressure kPa
89 and 138
Air by-pass valve operation opening pressure kPa
About 61
Negative pressure
Valve operation
About 61kPa
Starts to open
General Information . . . . . . . . ..1
Servicing specifications. . . . . . . 1
On-vehicle servicing. . . . . . . . ..1
1. Turbocharger super charging pressure check . . ...1
2. Air by-pass valve check . . . . . . . . . . . .1
Intercooler . . . . . . . . . . . . . . . . . ..2
Intercooler water spray . . . . . . . . . . . . .3
Secondary air control system. . . . . . . . . . .6
Inlet manifold . . . . . . . . . . . . . . . . .7
INTAKE & EXHAUST – INTERCOOLER WATER SPRAY
Intercooler
Removal and fitting
Pre-removal and post-fitting operations
• Removal and fitting of air duct and air cleaner ASSY
Removal procedure
1. Vacuum hose connection
2. Air by-pass valve ASSY
3. Air by-pass hose
4. Air hose E
5. Air hose connection
(secondary air control system)
6. Air pipe C
7. Air hose D
• Cover (ref. Chapter 51)
8. Air hose A
• Front bumper ASSY
(ref. Chapter 51)
9. Air pipe B
10. Bracket
11. Air hose C
12. Air pipe A
13. Air hose B
14. Intercooler ASSY
15-2
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