Daewoo G424 Gasoline Service Manual page 12

General Bolts and Nuts Tightening Torque
Standard Bolts and Nuts
Nominal
Pitch
diameter
Head mark 4
M5 M5
M6 M6
M7 M7 1.2 (8.7) [12]
M8 M8 2.5 (18.1) [25]
4.2 (30.4) [41]
M9 M9
M10 M10 7.3 (52.8) [72]
Tapered Threads
Size
NPTF 1/16
PT 1/8
PT 1/4
NPTF 1/4
PT 3/8
PT 1/2
New Tightening Method-By Use of Bolts to be Tightened in Plastic Area
A new type of bolts, to be tightened in plastic area, is currently used in some parts of the engine. The tightening
method for the bolts is different from the conventional one. Be sure to observe the method described in the text
when tightening the bolts.
Service limits are provided for the bolts. Make sure that the service limits described in the text are strictly
observed.
•
Area where the bolts are in use:
(1) Cylinder head bolts
(2) Main bearing cap bolts
(3) Connecting rod cap bolts
•
Tightening method
After tightening the bolts to the specified torque, tighten them another 90° or 180° (twice 90°). The tightening
method varies on different areas. Observe the tightening method described in the text.
G424 Service Manual
Bolt, stud, nut (with spring washer)
Head mark 7
- 0.5 (0.5) [3.6]
- 0.9 (6.5) [8.8]
2.2 (15.9) [22]
4.5 (32.5) [44]
8.6 (60.0) [81]
14.0 (101.3) [137]
Material of internal threads:
Aluminum alloy
0.5 to 0.8 (3.6 to 5.8) [5 to 8]
0.8 to 1.2 (5.8 to 8.7) [8 to 11]
2.0 to 3.0 (14.5 to 21.7) [20 to 29]
2.0 to 3.0 (14.5 to 21.7) [20 to 29]
4.0 to 5.5 (28.9 to 39.8) [39 to 59]
7.0 to 10.0 (50.6 to 72.3) [69 to 98]
Torque, kg•m (lb•ft) [N•m]
Head mark 10
-
1.2 (8.7) [12]
3.0 (21.7) [29]
6.0 (43.4) [59]
10.7 (77.4) [105]
14.5 (104.9) [142]
Torque, kg•m (lb•ft) [N•m]
12.0 to 16.0 (86.8 to 115.7) [118 to 156]
11
Flange bolt, flange nut
Head mark 4
-
-
1.3 (9.4) [13]
2.6 (18.8) [25]
4.7 (34.0) [46]
-
Material of internal threads:
Cast iron or steel
0.8 to 1.2 (5.8 to 8.7) [8 to 11]
1.5 to 2.2 (10.8 to 15.9) [15 to 21]
3.5 to 4.5 (25.3 to 32.5) [34 to 44]
3.5 to 4.5 (25.3 to 32.5) [34 to 44]
5.5 to 7.5 (39.8 to 54.2) [54 to 73]
General Information
Head mark 7
0.6 (4.3) [5.9]
1.0 (7.2) [9.8]
2.4 (17.4) [24]
5.0 (36.2) [49]
9.5 (68.7) [93]
-