1998 MITSUBISHI LANCER EVOLUTION IV cooling

ENGINE COOLING – Water Pump14-5
WATER PUMP
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
Engine Coolant Draining and Supplying
(Refer to P.14-2.)Timing Belt and Timing Belt B Removal and Installation
(Refer to GROUP 11.)
12 – 15 {1.2 – 1.5} 24 {2.4}
8 × 22 8 × 14
Bolt specifications
8 × 24
Screw diameter × length mm
1
2
4
3
2
22 {2.2}
8 × 70
Unit: Nm {kgfm}
Removal steps
1. Alternator brace
2. Water pump
3. Water pump gasket
A4. O-ring
INSTALLATION SERVICE POINT
AO-RING INSTALLATION
Fit the O-ring in the O-ring groove in the water inlet pipe,
and coat the outer circumference of the O-ring or the inside
surface of the water pump with water before inserting the
pipe.
Water pump
O-ring
Water inlet pipe

ENGINE COOLING – Water Hose and Water Pipe14-6
WATER HOSE AND WATER PIPE
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
(1) Coolant Draining and Refilling (Refer to P.14-2.)
(2) Air Hose C Removal and Installation
(Refer to GROUP 15 – INTERCOOLER.)
(3) Air Control Valve Bracket Removal and Installation
(Refer to GROUP 15 – AIR CONTROL VALVE.)
6 2
10
8
Semi-drying sealant:
THREEBOND 1207F
57

3mm
6
9 1 3
Unit: Nm {kgfm}
24 {2.4}
48 {4.9}
10 {1.0}
141112
13 {1.3}
41 {4.2} 13 {1.3} 10 {1.0}24 {2.4}
41 {4.2}
13
4
Removal steps
AC1. Radiator upper hose connection
AC2. Radiator lower hose connection
3. Water hose
4. Water hose
5. Water inlet fitting
B6. Thermostat case assembly
7. Water hose
8. Water hose9. Heater hose connection
A10. O-ring
11. Water inlet pipe
A12. O-ring
Turbocharger (Refer to GROUP 15.)
13. Water pipe assembly A
14. Water pipe assembly B

ENGINE COOLING – Radiator14-7
RADIATOR
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
Engine Coolant Draining and Supplying (Refer to
P.14-2.)
2
3 611
12 6
810
796
1513
4
Unit: Nm {kgfm}
12 {1.2} 12 {1.2}
12 {1.2}
9
Radiator removal steps
1. Drain plug
2. Radiator cap
3. Overflow hose
4. Reserve tank
5. Reserve tank bracket
AA6. Radiator upper hose
AA7. Radiator lower hose
8. Radiator assembly
9. Lower insulator
10. Radiator fan motor assemblyRadiator fan motor removal steps
1. Drain plug
2. Radiator cap
AA6. Radiator upper hose
Air intake hose
(Refer to GROUP15 – Intercooler.)
10. Radiator fan motor assembly
11. Fan
12. Radiator fan motor
13. Shroud

ENGINE COOLING – Radiator14-8
REMOVAL SERVICE POINTS
ARADIATOR UPPER HOSE / RADIATOR LOWER
HOSE DISCONNECTION
After making mating marks on the radiator hose and the hose
clamp, disconnect the radiator hose.
INSTALLATION SERVICE POINT
ARADIATOR LOWER HOSE / RADIATOR UPPER
HOSE CONNECTION
(1) Insert each hose as far as the projection of the water
inlet or outlet fitting.
(2) Align the mating marks on the radiator hose and hose
clamp, and then connect the radiator hose.
Caution
Fit the clamp on the hose at the same position as
before.
INSPECTION
1. RADIATOR FAN MOTOR CHECK
Apply the battery voltage across connector terminals 1 and
2, and terminals 3 and 4, of the radiator fan motor and check,
at that time, that the radiator fan turns.
2. POWER RELAY CONTINUITY CHECK
Battery voltageTerminal number
1345
When deenergized
When energized
Radiator fan motor relay LO

ENGINE COOLING – Radiator14-9
Battery voltageTerminal number
1234
When deenergized
When energized
Radiator fan motor relay HI