Daewoo Nubira. Manual - part 147

1C – 22

I

DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

33.  Connect the ignition wires to the spark plugs.
34.  Install the spark plug cover.
35.  Install the spark plug cover bolts.

Tighten

Tighten the spark plug cover bolts to 8 N

S

m (71 lb–in).

36.  Connect the breather tube to the valve cover.
37.  Align the timing marks on the camshaft gears to the

notches on the valve cover, using the intake gear
mark for the intake gear and the exhaust gear mark
for the exhaust gear.

38.  Align the mark on the crankshaft gear with the

notch at the bottom of the rear timing belt cover.

39.  Install the timing belt.
40.  Check and adjust the timing belt tension. Refer to

”Timing Belt Check and Adjust” in this section.

DOHC ENGINE MECHANICAL  1C – 23

DAEWOO V–121 BL4

41.  Install the front timing belt cover.
42.  Install the front timing belt cover bolts.

Tighten

Tighten the upper and lower front timing belt cover
bolts to 6 N

S

m (53 lb–in).

43.  Install the crankshaft pulley.
44.  Install the crankshaft pulley bolts.

Tighten

Tighten the crankshaft pulley bolts to 20 N

S

m (15 lb–

ft).

45.  Install the right engine mount bracket and retaining

bolts.

Tighten

Tighten the right engine mount bracket retaining bolts
to 60 N

S

m (44 lb–ft).

46.  Remove the engine assembly lift support

J–28467–B.

47.  Install the serpentine accessory drive belt. Refer to

Section 6B, Power Steering Pump.

48.  Connect the upper radiator hose to the thermostat

housing.

49.  Install the right front splash shield.
50.  Install the right front wheel. Refer to Section 2E,

Tires and Wheels.

51.  Install the air filter housing.
52.  Install the air filter housing bolts.

Tighten

Tighten the air filter housing bolts to 8 N

S

m (71 lb–in).

53.  Connect the air intake tube to the throttle body.
54.  Connect the breather tube to the valve cover.
55.  Connect the intake air temperature sensor connec-

tor.

56.  Connect the camshaft position sensor.

1C – 24

I

DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

57.  Connect the coolant temperature sensor connector.
58.  Connect the engine coolant temperature sensor

connector.

59.  Connect the idle air control valve connector.
60.  Connect the throttle position sensor connector.
61.  Install the evaporative emission canister purge so-

lenoid bracket bolt.

Tighten

Tighten the evaporative emission canister purge sole-
noid bracket bolt to 5 N

S

m (44 lb–in).

62.  Connect the EI system ignition coil connector.
63.  Connect the pre–converter oxygen sensor connec-

tor.

64.  Connect the PCM/ECM ground terminal.
65.  Install the fuel pump fuse.
66.  Connect the negative battery ground cable.
67.  Refill the engine cooling system. Refer to Section

1D, Engine Cooling.

CAMSHAFTS

Removal Procedure

1.  Remove the timing belt. Refer to ”Timing Belt” in

this section.

2.  Disconnect the breather tube at the valve cover.
3.  Disconnect the crankcase ventilation tube at the

valve cover.

4.  Remove the spark plug cover bolts.
5.  Remove the spark plug cover.
6.  Disconnect the ignition wires from the spark plugs.
7.  Disconnect the camshaft position sensor.
8.  Remove the valve cover bolts.
9.  Remove the valve cover washers.
10.  Remove the valve cover and the valve cover gas-

ket.

DOHC ENGINE MECHANICAL  1C – 25

DAEWOO V–121 BL4

Notice : Take extreme care to prevent any scratches,
nicks or damage to the camshafts.

11.  While holding the intake camshaft firmly in place,

remove the intake camshaft gear bolt.

12.  Remove the intake camshaft gear.
13.  While holding the exhaust camshaft firmly in place,

remove the exhaust camshaft gear bolt.

14.  Remove the exhaust camshaft gear.

15.  Loosen the camshaft bearing cap bolts in stages of

one–half to one turn.

16.  Remove the camshaft bearing cap bolts from the

cylinder head.

17.  Remove the camshafts.
18.  Remove the seal ring from the camshafts.

Important : The camshaft must detach evenly from the
bearing seats in the front guide bearing.

19.  Check the camshaft and bearing seats for wear and

replace them if necessary.

Installation Procedure

Notice : Take extreme care to prevent any scratches,
nicks or damage to the camshafts.

1.  Lubricate the camshaft journals and the camshaft

caps with engine oil.

2.  Install the intake camshaft.
3.  Install the intake camshaft bearing caps in their

original positions.

4.  Install the intake camshaft bearing cap bolts.
5.  Install the exhaust camshaft.
6.  Install the exhaust camshaft bearing caps in their

original positions.

7.  Install the exhaust camshaft bearing cap bolts.
8.  Tighten the camshaft cap bolts gradually and in the

sequence shown for each camshaft bearing cap.

Tighten

Tighten the camshaft cap bolts to 8 N

S

m (71 lb–in).