Daewoo Nubira. Service manual - part 156

1C – 82

I

DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

3.  Install the crankshaft.
4.  Install the lower crankshaft bearings in the bearing

caps.

5.  Inspect the crankshaft end play with the crankshaft

bearings installed.

6.  Check for permissible crankshaft end play. Refer

to”Engine Specifications”in this section.

7.  With the crankshaft mounted on the front and rear

crankshaft bearings, check the middle crankshaft
journal for permissible out–of–round (runout). Refer
to ”Engine Specifications”in this section.

Important : Grease the crankshaft journals and lubricate
the crankshaft bearings slightly so that the plastic gauging
thread does not tear when the crankshaft bearing caps are
removed.

8.  Inspect all of the crankshaft bearing clearances us-

ing a commercially available plastic gauging (ductile
plastic threads).

9.  Cut the plastic gauging threads to the length of the

bearing width. Lay them axially between the crank-
shaft journals and the crankshaft bearings.

10.  Install the crankshaft bearing caps and the bolts.

Tighten

Tighten the crankshaft bearing cap bolts to 50 N

S

m

(26 lb–ft). Use the angular torque gauge, KM–470–B,
to tighten the crankshaft bearings +45 degrees +
another 15 degrees.

DOHC ENGINE MECHANICAL  1C – 83

DAEWOO V–121 BL4

11.  Remove the crankshaft bearing cap bolts and the

caps.

12.  Measure the width of the flattened plastic thread of

the plastic gauging using a ruler. (Plastic gauging is
available for different tolerance ranges.)

13.  Inspect the bearing clearance for permissible toler-

ance ranges. Refer to ”Engine Specifications”in this
section.

14.  Apply a bead of adhesive sealing compound to the

grooves of the crankshaft bearing caps.

15.  Install the crankshaft bearing caps to the engine

block.

16.  Tighten the crankshaft bearing caps using new

bolts.

Tighten

Tighten the crankshaft bearing cap bolts to 15 N

S

m

(26 lb–ft). Use the angular torque gauge, KM–470–B,
to tighten the crankshaft bearings +45 degrees +
another 15 degrees.

Important : Grease the connecting rod journals and lubri-
cate the connecting rod bearings slightly so that the plastic
gauging thread does not tear when the connecting rod
bearing caps are removed.

17.  Inspect all of the connecting rod bearing clearances

using a commercially available plastic gauging
(ductile plastic threads).

18.  Cut the plastic gauging threads to the length of the

connecting rod bearing width. Lay them axially be-
tween the connecting rod journals and the connect-
ing rod bearings.

19.  Install the connecting rod bearing caps.

Tighten

Tighten the connecting rod bearing cap bolts to 35
N

S

m (26 lb–ft). Use the angular torque gauge

KM–470–B to tighten the connecting rod bearing cap
bolts to +45 degrees plus one turn of 15 degrees.

1C – 84

I

DOHC ENGINE MECHANICAL

DAEWOO V–121 BL4

20.  Remove the connecting rod bearing caps.
21.  Measure the width of the flattened plastic thread of

the plastic gauging using a ruler. (Plastic gauging is
available for different tolerance ranges.)

22.  Inspect the bearing clearance for permissible toler-

ance ranges. Refer to ”Engine Specifications”in this
section.

23.  Install the connecting rod bearing caps to the con-

necting rods.

24.  Tighten the connecting rod bearing caps using new

bolts.

Tighten

Tighten the connecting rod bearing cap bolts to 35
N

S

m (26 lb–ft). Use the angular torque gauge,

KM–470–B, to tighten the connecting rod cap bolts to
+45 degrees plus one turn of 15 degrees.

25.  Install the oil pump.
26.  Install the oil pump retaining bolts.

Tighten

Tighten the oil pump retaining bolts to 10 N

S

m (89 lb–

in).

DOHC ENGINE MECHANICAL  1C – 85

DAEWOO V–121 BL4

27.  Install the lower block support bracket and bolts.

Tighten

Tighten the lower block support bolts to 35 N

S

m (26

lb–ft).

28.  Install the lower block support bracket splash shield

and bolts.

Tighten

Tighten the lower block support bracket and splash
shield bolts to 35 N

S

m (26 lb–ft).

29.  Install the oil pump/pick–up tube.
30.  Install the oil pump/pick–up tube bolts.

Tighten

Tighten the oil pump/pick–up tube bolts to 10 N

S

m (89

lb–in).

31.  Install the oil pan gasket to the oil pan.
32.  Install the oil pan.

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

33.  Install the oil pan retaining bolts.

Tighten

Tighten the oil pan retaining bolts to 10 N

S

m (89 lb–in).

34.  Rotate the engine on the engine overhaul stand

KM–412.