1998 OPEL FRONTERA cooling

6B–8
ENGINE COOLING
3. Idle pulley
Install idle pulley and tighten bolt to the specified
torque.
Torque: 52 Nꞏm (5.3 Kgꞏm/38 lb ft)4. Timing beltInstall timing belt. Refer to timing belt installation
step in “Timing Belt” in this manual.
5. Connect radiator inlet hose and replenish EC.
6. Connect battery ground cable.
Thermostat
Thermostat and Associated Parts
031RW001
Legend
(1) Thermostat Housing
(2) Thermostat
(3) Outlet Pipe
Removal
1. Disconnect battery ground cable.
2. Drain engine coolant from the radiator and engine.
3. Disconnect radiator hose from the inlet pipe.
4. Remove thermostat housing.
5. Remove thermostat(2).
Inspection
Suspend the thermostat in a water–filled container using
thin wire. Place a thermometer next to the thermostat.
Do not directly heat the thermostat.
Gradually increase the water temperature. Stir the water
so that the entire water is same temperature.
031RS003Confirm the temperature when the valve first begins to
open.
Valve opening temperature 74.5C
78.5C
(166.1
F 173.3F)
Confirm the temperature when the valve is fully opened.
Valve full open temperature and lift More than
8.5mm (0.33 in) at 90
C (194F)
Make necessary repair and parts replacement if extreme
wear or damage is found during inspection.
Installation
1. Install thermostat into the outlet pipe(4) making sure
that the air hole is in the up position.
2. Install thermostat housing and tighten bolts to the
specified torque.
Torque: 25 Nꞏm (2.5 Kgꞏm/18 lb ft)
3. Installation rubber hose.
4. Replenish engine coolant (EC).
5. Start engine and check for EC leakage.

ENGINE COOLING6B–9
Radiator
Radiator and Associated Parts
110RW003
Legend
(1) Oil Cooler Hose For Automatic Transmission
(2) Radiator Hose
(3) Fan Guide, Lower(4) Reserve Tank Hose
(5) Bracket
(6) Radiator Assembly
(7) Reserve Tank
Removal
1. Disconnect battery ground cable.
2. Loosen a drain plug(2) to drain EC.
3. Disconnect oil cooler hose(1) on automatic
transmission (A/T).
4. Disconnect radiator inlet hose and outlet hose from
the engine.
110RW002
5. Remove fan guide(1), clips(3) on both sides and the
bottom lock, then remove lower fan guide(3) with fan
shroud(4).
110RW001

6B–10
ENGINE COOLING
6. Disconnect the reserve tank hose(4) from radiator.
7. Remove bracket(5).
110RW004
8. Lift up and remove the radiator assembly with hose,
taking care not to damage the radiator core with a fan
blade.
9. Remove rubber cushions on both sides at the bottom.
Inspection
Radiator Cap
Measure the valve opening pressure of the pressurizing
valve with a radiator filler cap tester.
Replace the cap if the valve opening pressure is outside
the standard range.
Valve opening pressure kPa (psi) 88.3
117.7
(12.8
17.1)
Cap tester: 5–8840–0277–0
Adapter: 5–8840–2603–0
Check the condition of the vacuum valve in the center of
the valve seat side of the cap. If considerable rust or dirt is
found, or if the valve seat cannot be moved by hand, clean
or replace the cap.Valve opening vacuum kPa (psi) 1.96
4.91
(0.28
0.71)
110RS006
Radiator Core
1. A bent fin may result in reduced ventilation and
overheating may occur. All bent fins must be
straightened. Pay close attention to the base of the fin
when it is being straightened.
2. Remove all dust, bugs and other foreign material.
Flushing the Radiator
Thoroughly wash the inside of the radiator and the engine
coolant passages with cold water and mild detergent.
Remove all signs of scale and rust.
Cooling System Leakage Check
Use a radiator cap tester to force air into the radiator
through the filler neck at the specified pressure of 196 kPa
(28.5 psi) with a cap tester:
Leakage from the radiator
Leakage from the coolant pump
Leakage from the water hoses
Check the rubber hoses for swelling.

ENGINE COOLING6B–11
Cap tester: 5–8840–0277–0
Adapter: 5–8840–2603–0
110RS005
Installation
1. Install rubber cushions on both sides of radiator
bottom.
2. Install radiator assembly with hose, taking care not to
damage the radiator core with a fan blade.
3. Install bracket (6) and support the radiator upper tank
with the bracket (5) and secure the radiator.
4. Connect reserve tank hose (4).
5. Install lower fan guide (3).
6. Connect radiator inlet hose and outlet hose to the
engine.
7. Connect oil cooler hose (1) to automatic
transmission.
110RW004
8. Connect battery ground cable.
9. Pour engine coolant up to filler neck of radiator, and
up to MAX mark of reserve tank.
111 R S 0 0 1Important operation (in case of 100% engine coolant
change) procedure for filling with engine coolant.
1. Make sure that the engine is cool.
2. Open radiator cap pour coolant up to filler neck.
3. Pour coolant into reservoir tank up to “MAX” line.
4. Tighten radiator cap and start the engine. After
idling for 2 to 3 minutes, stop the engine and
reopen radiator cap. If the water level is lower,
replenish.
WARNING: WHEN THE COOLANT IS HEATED TO A
HIGH TEMPERATURE, BE SURE NOT TO LOOSEN
OR REMOVE THE RADIATOR CAP. OTHERWISE YOU
MIGHT GET SCALDED BY HOT VAPOR OR BOILING
WATER. TO OPEN THE RADIATOR CAP, PUT A
PIECE OF THICK CLOTH ON THE CAP AND LOOSEN
THE CAP SLOWLY TO REDUCE THE PRESSURE
WHEN THE COOLANT HAS BECOME COOLER.
5. After tightening radiator cap, warm up the engine
at about 2000 rpm. Set heater adjustment to the
highest temperature position, and let the coolant
circulate also into heater water system.
6. Check to see the thermostat has opened through
the needle position of water thermometer,
conduct a 5–minute idling again and stop the
engine.
7. When the engine has been cooled, check filler
neck for water level and replenish if required.
Should extreme shortage of coolant is found,
check the cooling system and reservoir tank hose
for leakage.
8. Pour coolant into reservoir tank up tp “MAX” line.

6B–12
ENGINE COOLING
Drive Belt and Cooling Fan
Drive Belt and Associated Parts
015RW005
Legend
(1) Crankshaft Pulley
(2) Generator
(3) Power Steering Pump(4) Water Pump and Cooling Fan Pulley
(5) Idle Pulley
(6) Tension Pulley
(7) Drive Belt
The drive belt adjustment is not required as automatic
drive belt tensioner is equipped.
Inspection
Check drive belt for wear or damage, and replace with a
new one as necessary.
Installation
Install cooling fan assembly and tighten bolts/nuts to the
specified torque.
Torque : 22 Nꞏm (2.2 Kgꞏm/16 lb ft) for fan pulley
and fan bracket.
Torque : 10 Nꞏm (1.0 Kgꞏm/88.5 lb in) for fan and
clutch assembly.
NOTE: Fan belts for 6VE1 Gasoline Engine mounted on
98MY (UX) have been brought into one. As a result, the
rotating direction of a fan belt is opposite to the direction
o f c o o l i n g f a n f o r 9 2 t o 9 7 M Y 6 V D 1 w i t h n o
interchangeability.
Therefore, incorrect installation of a fan may cause the air
for cooling to flow in the opposite direction, this resulting
in the poor performance of the air-conditioner and a rise
temperature in engine cooling water.

ENGINE COOLING6B–13
Main Data and Specifications
General Specifications
M/TA/T
Cooling systemEngine coolant forced circulation
Radiator(1 tube in row) Tube type corrugated (2 tube in row)
Heat radiation capacity68,000 kcal/h77,000 kcal/h
Heat radiation area9.445m (0.878ft)11 . 2 1 m (1.04ft)
Radiator front area0.302m (0.028ft)
Radiator dry weight39N (8.8lb)44N (9.9lb)
Radiator cap valve opening pressure93.3 122.7kpa (13.5 17.8psi)
Engine coolant capacity2.5lit (2.6U.S q.t.)2.4lit (2.5U.S q.t.)
Engine coolant pumpCentrifugal impeller type
Delivery300 (317) or more
Pump speed5000 50 rpm
ThermostatWax pellet type with air hole
Valve opening temperature74.5 78.5C (166.1 173.3F)
Engine coolant total capacity10.4lit (11.0U.S qt)10.5lit (11.1U.S qt)
Torque Specifications
Nꞏm (Kgꞏm/lb ft)
E06RW041

6B–14
ENGINE COOLING
Special Tool
ILLUSTRATIONTOOL NO.
TOOL NAME
5–8840–0277–0
(J–24460–01)
Tester; radiator cap
5–8840–2603–0
(J–33984–A)
Adapter; radiator cap

6E–25 ENGINE DRIVEABILITY AND EMISSIONS
PINRefer To ENG RUN IGN ON Wire Color PIN Function
E15A/C RequestGRN/ORN0.0 V0.0 VElectric Cooling Fans
E16Ignition Feed (1 of 2 F16)RED/BLUB+B+—