Opel Frontera UBS. Service manual — part 1281

4JG2-NA/4JG2-TURBO ENGINE 6A2 – 5

INTERCOOLER (4JG2-T only)

REMOVAL

Preparation:

•

Disconnect battery ground cable

1.

Air Cleaner Cover & Air Duct

•

Remove bolts from intercooler.

2.

Vacuum Hose

3.

Intercooler Assembly

•

Disconnect outlet hose from intake manifold.

•

Remove bolts from engine side brakets.

INSTALLATION

3.

Intercooler

•

Connect outlet hose to intake manifold.

•

Install intercooler and tighten fixing bolts to the
specified torque.

19 (2.0/14)

N·m (Kg·m/lb·ft)

2.

Vacuum Hose

1.

Air Cleaner Cover & Air Duct

6A2 – 6 4JG2-NA/4JG2-TURBO ENGINE

CYLINDER HEAD COVER

REMOVAL

Preparation:

•

Disconnect battery ground cable.

1.

Air Cleaner Cover & Air Duct (4JG2-T only)

•

Disconnect two air hose.

•

Release clips and bands and remove air cleaner
cover.

2.

Intercooler Assembly (4JG2-Tonly)

•

(Refer to intercooler removal steps in this section)

3.

Heater and Oil Cooler Pipe Fixing Bolts

•

Remove fixing bolts from.

4.

Oil Level Gauge Tube

5.

Cylinder head cover

4JG2-NA/4JG2-TURBO ENGINE 6A2 – 7

INSTALLATION

5.

Cylinder Head Cover

•

Apply engine oil to the rocker arms and the valve
springs.

•

Install the cylinder head cover gasket to the
cylinder head cover.

•

The gasket must be perfectly smooth with no
loose areas.

•

Tighten the cylinder head cover nuts to the
specified torque in the numerical order.

13 (1.3/113 lb·in)

N·m(Kg·m/lb·in)

4.

Oil Level Gauge Tube

19 (1.9/14)

N·m(Kg·m/lb·ft)

Bolt

3.

Heater and Oil Cooler Pipe Fixing Bolts

2.

Intercooler Assembly (4JG2-T Only)

•

(Refer to intercooler installation steps in this
section.)

1.

Air Cleaner Cover & Air Duct

6A2 – 8 4JG2-NA/4JG2-TURBO ENGINE

INLET MANIFOLD

REMOVAL

1.

Intercooler (4JG2-T only)

2.

Oil Level Gauge Tube (4JG2-T only)

3.

Heater and Oil Cooler Pipe Fixing Bolts.

•

Remove fixing bolts from inlet manifold.

4.

Injection Pipes

5.

Inlet Manifold

INSTALLATION

5.

Inlet Manifold

•

Tighten the fixing bolts and nuts to the specified

19 (1.9/14)

N·m(Kg·m/lb·ft)

Bolt

24(2.4/18)

N·m(Kg·m/lb·ft)

Nut