Daewoo Nubira. Manual - part 148

1C – 26

I

DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

9.  Measure the intake camshaft end play and the ex-

haust camshaft end play. Refer to ”Engine Specifi-
cations” in this section.

10.  Install the intake camshaft gear.
11.  While holding the intake camshaft firmly in place,

install the intake camshaft gear bolt.

Tighten

Tighten the intake camshaft gear bolt to 50 N

S

m (37

lb–ft). Using the angular torque gauge KM–470–B,
tighten the bolt another 60 degrees plus 15 degrees.

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

install the exhaust camshaft gear bolt.

Tighten

Tighten the exhaust camshaft gear bolt to 50 N

S

m (37

lb–ft). Using the angular torque gauge KM–470–B,
tighten the bolt another 60 degrees plus 15 degrees.

14.  Install the valve cover and the valve cover gasket.
15.  Install the valve cover washers.
16.  Install the valve cover bolts.

Tighten

Tighten the valve cover bolts to 8 N

S

m (71 lb–in).

17.  Connect the camshaft position sensor.

DOHC ENGINE MECHANICAL  1C – 27

DAEWOO V–121 BL4

18.  Connect the ignition wires to the spark plugs.
19.  Install the spark plug cover.
20.  Install the spark plug cover bolts.

Tighten

Tighten the spark plug cover bolts to 3 N

S

m (27 lb–in).

21.  Connect the breather tube to the valve cover.
22.  Connect the crankcase ventilation tube to the valve

cover.

23.  Install the timing belt. Refer to ”Timing Belt” in this

section.

TIMING BELT CHECK AND ADJUST

Adjustment Procedure

1.  Disconnect the negative battery cable.
2.  Disconnect the intake air temperature sensor con-

nector.

3.  Remove the air intake tube from the throttle body.
4.  Remove the breather tube from the valve cover.

5.  Remove the air filter housing bolts.
6.  Remove the air filter housing.
7.  Remove the right front wheel. Refer to Section 2E,

Tires and Wheels.

8.  Remove the right front splash shield.

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DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

9.  Remove the serpentine accessory drive belt. Refer

toSection 6B, Power Steering Pump.

10.  Remove the crankshaft pulley bolts.
11.  Remove the crankshaft pulley.
12.  Remove the right engine mount bracket. Refer to

”Engine Mount”in this section.

13.  Remove the front timing belt cover bolts.
14.  Remove the front timing belt cover.

15.  Rotate the crankshaft at least one full turn clock-

wise using the crankshaft gear bolt.

16.  Align the mark on the crankshaft gear with the

notch at the bottom of the rear timing belt cover.

DOHC ENGINE MECHANICAL  1C – 29

DAEWOO V–121 BL4

17.  Align the camshaft gear timing marks. Use the ex-

haust gear mark for the exhaust gear and the in-
take gear mark for the intake gear, since the gears
are interchangeable

18.  Loosen the automatic tensioner bolt. To relieve the

belt tension, turn the hex–key tab counterclockwise.

19.  Rotate the automatic tensioner hex–key tab clock-

wise until the adjust arm pointer of the timing belt
automatic tensioner is aligned with the notch in the
timing belt automatic tensioner bracket.

20.  Tighten the automatic tensioner bolt.
21.  Rotate the crankshaft two full turns clockwise using

the crankshaft gear bolt.

22.  Check the automatic tensioner pointer.