Daewoo Nubira. Manual - part 155

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DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

6.  Remove the front timing belt cover bolts.
7.  Remove the front timing belt cover.
8.  Remove the crankshaft pulley bolts.
9.  Remove the crankshaft pulley.

10.  Loosen the timing belt automatic tensioner bolt.
11.  Rotate the timing belt automatic tensioner hex–key

clockwise to release the tension.

12.  Remove the timing belt idler pulley bolt and nut.
13.  Remove the timing belt idler pulleys.
14.  Remove the timing belt.
15.  Remove the engine mount retaining bolts.
16.  Remove the engine mount.

17.  Disconnect the crankcase breather tubes from the

valve cover.

18.  Remove the spark plug cover bolts.
19.  Remove the spark plug cover.
20.  Disconnect the ignition wires from the spark plugs.
21.  Remove the valve cover bolts.
22.  Remove the valve cover washers.
23.  Remove the valve cover and the valve cover gas-

ket.

DOHC ENGINE MECHANICAL  1C – 79

DAEWOO V–121 BL4

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

24.  While holding the intake camshaft firmly in place,

remove the intake camshaft bolt.

25.  Remove the intake camshaft gear.
26.  While holding the exhaust camshaft firmly in place,

remove the exhaust camshaft bolt.

27.  Remove the exhaust camshaft gear.

28.  Remove the crankshaft timing belt gear.

29.  Remove the rear timing belt cover bolts and cover.

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DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

30.  Rotate the engine on the engine overhaul stand

KM–412.

31.  Remove the oil pan retaining bolts.
32.  Remove the oil pan.
33.  Remove the oil pump/pickup tube bolts.
34.  Remove the oil pump/pickup tube.
35.  Remove the lower block support bracket/splash

shield bolts.

36.  Remove the splash shield.
37.  Remove the lower block support bracket bolts.
38.  Remove the lower block support bracket.

39.  Remove the oil pump retaining bolts.
40.  Remove the oil pump.

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DAEWOO V–121 BL4

41.  Mark the order of the connecting rod bearing caps.
42.  Remove the connecting rod bearing cap bolts for all

of the pistons.

43.  Remove the connecting rod bearing caps and the

lower connecting rod bearings.

44.  Mark the order of the crankshaft bearing caps.
45.  Remove the crankshaft bearing cap bolts.
46.  Remove the crankshaft bearing caps and the lower

crankshaft bearings.

47.  Remove the crankshaft.
48.  Clean any necessary parts.

Assembly Procedure

1.  Coat the crankshaft bearings with engine oil.
2.  If replacing the crankshaft, transfer the pulse pick–

up sensor disc to the new crankshaft.