1998 OPEL FRONTERA cooling

6B – 6 ENGINE COOLING
REMOVAL
1. Drain coolant.
2. AC Generator Drive Belt
1) Loosen AC Generator mounting bolt, adjust
plate lock bolt, and remove the drive belt.
3. Cooling Fan Assembly
1) Remove lock nut and take out cooling fan
assembly with cooling fan clutch.
4. Water Pump Assembly
INSPECTION
Make necessary repair and parts replacement if
excessive wear or damage is found during inspection.
Should any of the following problems occur, the entire
water pump assembly must be replaced.
1) Cracks in the water pump body
2) Coolant leakage from the seal unit
3) Play or abnormal noise in the bearing
4) Cracks or corrosion in the impeller
INSTALLATION
1. Gasket
1) Set gasket to gear case.
2. Water Pump Assembly
1) Install water pump assembly, and tighten to
specified torque.
Torque: 20 Nꞏm (2.0 kgꞏm/14.5 lb ft)3. Cooling Fan Assembly
1) Install cooling fan assembly, and tighten to
specified torque.
Torque: 8 Nꞏm (0.8 kgꞏm/5.8 lb ft)
4. AC Generator Drive Belt
1) Install AC Generator drive belt and adjust belt
tension.
Torque: 40 Nꞏm (4.1 kgꞏm/29.7 lb ft)
For ACG to bracket
20 Nꞏm (2.0 kgꞏm/14.5 lb ft)
For ACG to adjust plate
5. Fill coolant to specified capacity.
12
Legend
(1) Fan Pulley
(2) Water Pump Assembly
030RW009
ON-VEHICLE SERVICE
WAT E R P U M P

ENGINE COOLING 6B – 7
THERMOSTAT
REMOVAL
1. Disconnect battery ground cable.
2. Drain coolant from the radiator and engine.
3. Thermostat housing
1) Remove mounting bolt and remove thermostat
housing together with radiator hose.
4. Gasket
5. Thermostat
INSPECTION
Make necessary repair and parts replacement if
excessive wear or damage is found during inspection.
Submerge the thermostat assembly in the water.
Place wooden blocks on the bottom of the water
container.
Do not heat the thermostat directly.
Gradually increase the water temperature. Stir the
water so that the entire water is the same temperature.
1) Make sure that valve begins to open at the
specified temperature.
Valve Opening Temperature: 85°C (185°F)
2) Make sure that valve opens fully at the specified
temperature.
Valve Full Open Temperature: 100°C (212°F)
1
2
3
4
Legend
(1) Bolt
(2) Thermostat Housing
(3) Thermostat
(4) Intake Manifold
035RW002
031RS003

6B – 8 ENGINE COOLING
INSTALLATION
1. Thermostat
1) The jiggle valve of the thermostat must face the
cylinder head side.
2. Gasket
3. Install thermostat housing and tighten bolt to the
specified torque.
Torque: 20 Nꞏm (2.0 kgꞏm/14.5 lb ft)
4. Reconnect water hose
1) Fill coolant to full level.
2) Reconnect battery ground cable.
5. Start the engine check for coolant leakage.

ENGINE COOLING 6B – 9
RADIATOR
REMOVAL
1. Disconnect battery ground cable
2. Loosen drain plug to drain coolant.
3. Radiator Hose
1) Disconnect lower hose and upper hose from the
engine.
4. Fan Guide
1) Remove clips on both sides and the bottom lock.
5. Reservoir Tank Hose
1) Disconnect the hose from radiator.
6. Bracket
7. Radiator Assembly
1) Remove the radiator assembly upward by the
hoses taking care not to damage the radiator
core by the fan blade.
2) Remove rubber cushions on both sides of the
bottom.
INSPECTION
Radiator Cap
1) Measure the valve opening pressure with the
radiator cap tester. Replace the radiator cap if it
exceeds the standard.
Valve opening pressure: 93.2 – 122.7 kPa
(0.95 – 1.25 kg/cm
2/
13.5 – 17.8 psi)
Check the condition of the negative pressure valve in
the center of the valve seat side of the cap. If the valve
seat does not move smoothly due to rust or dust, clean
and replace the radiator cap.Radiator Core
1) Deformed radiator fins could reduce radiation
effects, resulting in overheating. Straighten the fins.
In such a case, take care not to damage the fin
roots.
2) Remove dust and other foreign materials.
Flushing the Radiator
1) Wash the inside of radiator and the coolant
passage with water and a neutral detergent.
Remove all scales and rust.
110RW017
110RS006

6B – 10 ENGINE COOLING
Checking for Coolant Leakage
1) Check the cooling system for leakage with the
radiator cap tester by applying 196.0 kPa (28.4 psi)
air pressure from filler neck to inside the radiator.
INSTALLATION
1. Radiator Assembly
1) Install rubber cushions on both sides of radiator
bottom.
2) Install radiator assembly with hose, taking care
not to damage the radiator core by a fan blade.
2. Bracket
1) Support the radiator upper tank with the bracket
and fix the radiator.
3. Reserve Tank Hose
4. Fan Guide, Lower
5. Radiator Hose
1) Connect inlet hose and outlet hose to the
engine.
2) Connect battery ground cable.
3) Pour coolant up to filler neck of radiator, and up
to MAX mark of reserve tank.
4) Start engine to warm up, and check for coolant
level. Replenish coolant if it does not reach the
radiator filler neck, and tighten the cap
completely.
110RS005
012RW080

ENGINE COOLING 6B – 11
DRIVE BELT ADJUSTMENT
INSPECTION
Check drive belts for wear or damage, and replace with
new ones as necessary. Check belts for tension, and
adjust as necessary.
1) Check drive belt tension.
2) Push the middle of belt with a force of 98 N
(10 kg/22 lb) and check each belt for deflection.
Standard deflection:
For A.C. generator & fan pulley drive belt
Initial tension : 8 – 12 mm (0.31 – 0.47 in)
Tension at readjustment : Same as above.
For A/C compressor drive belt
Initial tension : 7 – 10 mm (0.28 – 0.38 in)
Tension at readjustment : 5 – 8 mm (0.20 – 0.31 in)
TENSION ADJUSTMENT
1) Loosen AC generator mounting bolt to move AC
generator, adjust belt tension and tighten to the
specified torque.
Legend
(1) Crankshaft Pulley
(2) A.C. Generator Pulley
(3) Cooling Fan Pulley
5
3
1 2 4
Legend
(1) Crankshaft Pulley
(2) A.C. Generator
(3) Cooling Fan Pulley
(4) A/C Compressor
(5) Belt Tensioner Pulley
012RW085
3
2
1
012RW084

6B – 12 ENGINE COOLING
Torque:
For A.C. Generator fixing bolt
40 Nꞏm (4.1 kgꞏm/29.7 lb ft)
For Adjusting plate fixing bolt
24 Nꞏm (2.4 kgꞏm/17.4 lb ft)
For Adjusting plate lock bolt
19 Nꞏm (1.9 kgꞏm/13.7 lb ft)
2) Adjust the A/C compressor drive belt by tightening
the belt tensioner bolt.
Legend
(1) Crankshaft Pulley
(2) A.C. Generator Pulley
(3) Cooling Fan Pulley
(4) A/C Compressor Pulley
(5) Belt Tensioner Pulley
5
3
24
1
012RW110

ENGINE FUEL 6C – 5
HIGH PRESSURE OIL PUMP, OIL FLOW
P
33
32
31
30
1
2
3
4
56
8
97
10
11
12
13
14 23 29
25
28
27262415
16
17 18
19 20 21 22
Legend
(1) Camshaft
(2) Balance Shaft
(3) Crankshaft
(4) Oil Cooler and Oil Filter Assembly
(5) Oil Filter Relief Valve 98 Kpa (1 kg/cm
2/14.2 Psi)
(6) Oil Cooler Relief Valve 245 Kpa (2.5 kg/cm2/
36 Psi)
(7) First Oil Pump
(8) Main Oil Relief Valve 588 Kpa (6 kg/cm
2/ 85 Psi)
(9) To Oil Pan
(10) To Oil Pan
(11) Injector
(12) Oil Rail
(13) Sub Oil Filter Relief Valve 98 Kpa (1 kg/cm
2/
14.2 Psi)
(14) Sub Oil Filter
(15) Relief Valve 588 Kpa (6 kg/cm
2/ 85 Psi)
(16) Second Oil Pump(17) Oil Pan
(18) To Oil Pan
(19) Balance Shaft
(20) Cooling Jet Relief Valve 245 Kpa (2.5 kg/cm
2/
36 Psi)
(21) Cooling Jet
(22) To Oil Pan
(23) Two Way Check Valve
(24) Nipple Filter
(25) Edge Filter
(26) Edge Filter
(27) High Pressure Oil Pump Assembly
(28) To Oil Pan
(29) Pressure Control Valve
(30) To Oil Pan
(31) Turbocharger
(32) Oil Gallery
(33) Timing Gear Train
040RW018