Daewoo Nubira. Manual - part 151

1C – 38

I

DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

Installation Procedure

1.  Coat the new oil pan gasket with sealant.

Important : Install the oil pan within 5 minutes after apply-
ing the liquid gasket to the oil pan.

2.  Install the oil pan to the engine block.
3.  Install the oil pan retaining bolts.

Tighten

Tighten the oil pan retaining bolts to 10 N

S

m (89 lb–in).

4.  Install the oil pan flange–to–transaxle retaining

bolts.

Tighten

Tighten the oil pan flange–to–transaxle bolts to 40
N

S

m (30 lb–ft).

5.  Install the catalytic converters.

Tighten

Tighten the auxiliary catalytic converter–to–exhaust
manifold nuts to 40 N

S

m (30 lb–ft).

DOHC ENGINE MECHANICAL  1C – 39

DAEWOO V–121 BL4

Tighten

Tighten the exhaust pipe support bracket bolts to 40
N

S

m (30 lb–ft).

Tighten

Tighten the front muffler pipe–to–main catalytic con-
verter nuts to 30 N

S

m (22 lb–ft).

6.  Connect the post–converter oxygen sensor.
7.  Connect the negative battery cable.
8.  Refill the engine crankcase with engine oil.

OIL PUMP

Tools Required

KM–498–B Pressure Gauge
KM–135 Adapter

Engine Oil Pressure Inspection Procedure

1.  Remove the right front wheel well splash shield.
2.  Disconnect the oil pressure switch connector.

3.  Install the adapter KM–135 in place of the oil pres-

sure switch.

4.  Connect the pressure gauge KM–498–B to the

adapter.

5.  Start the engine and check the oil pressure at idle

speed and engine temperature of 80

³

C (176

³

F).

The minimum oil pressure should be 30 kPa (4.35
psi).

6.  Stop the engine and remove the pressure gauge

KM–498–B and the adapter KM–135.

1C – 40

I

DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

7.  Install the oil pressure switch.

Tighten

Tighten the oil pressure switch to 40 N

S

m (30 lb–ft).

8.  Connect the oil pressure switch connector.
9.  Install the right front wheel well splash shield.
10.  Check the oil level. Add oil until it reaches the full

mark.

Removal Procedure

1.  Disconnect the negative battery cable.
2.  Remove the rear timing belt cover. Refer to ”Rear

Timing Belt Cover” in this section.

3.  Disconnect the oil pressure switch connector.

4.  Remove the oil pan. Refer to ”Oil Pan” in this sec-

tion.

5.  Remove the oil pump/pickup tube and support

bracket bolts.

6.  Remove the oil pump/pickup tube.

DOHC ENGINE MECHANICAL  1C – 41

DAEWOO V–121 BL4

7.  Remove the oil pump retaining bolts.
8.  Carefully separate the oil pump and gasket from

the engine block and oil pan.

9.  Remove the oil pump.

Inspection Procedure

1.  Clean the oil pump and the engine block gasket

mating surface areas.

2.  Remove the safety relief valve bolt.
3.  Remove the safety relief valve and the spring.
4.  Remove the oil pump–to–crankshaft seal.