78
Technical Data
Tightening torque table
Important bolts and nuts D34 MS
Thread
Torque
Description
Diam.xPitch
Nm
kpm
lbf.ft
Notes
(M-Thread)
Cylinder head bolts
20 x 2,5
392
40
289
(a) (b) (c)
Rocker shaft brackets
12 x 1,75
49
5
36
Rocker arm lock nuts
12 x 1,25
64
6,5
47
Valve bridge lock nuts
10 x 1,25
55
5,6
40
Camshaft gear
30 x 1,5
294
30
216
Left-hand thread
Camshaft thrust plate
12 x 1,25
59
6
43
Main bearing caps
24 x 3
588
60
434
(a)(d)
Main bearing cap side bolts
16 x 1,5
147
15
108
(a)(d)
Piston cooling nozzles
12 x 1,75
34
3,5
25
(f)
Timing gear case
12 x 1,75
98
10
72
Rear plate
12 x 1,25
98
10
72
Oil pan
10 x 1,5
39
4
29
Front mounting bracket
20 x 1,5
392
40
290
Rear mounting bracket
18 x 2,5
245
25
181
Connecting rod bearing caps
18 x 1,5
343
35
253
(a) (f)
Flywheel
22 x 1,5
539
55
398
(a)
Crankshaft pulley and damper
22 x 1,5
539
55
398
Idler shaft
12 x 1,75
54
5,5
40
Idler gears
10 x 1,25
39
4
29
Oil pump drive gear shaft
27 x 1,5
294
30
216
Oil pump cover
10 x 1,25
26,3-39,7
2,7-4,1
18-32
Freshwater pump impeller
22 x 1,5
196
20
145
Freshwater pump pulley
24 x 1,5
245
25
181
(a) Wet , apply lubrication oil to the threads of the nut and bolt.
(b) 2-step tightening method.
(c) Tighten cylinder head bolts according to the angle method, tighten short bolts to 118 Nm (12 kpm) [86,8 lbf.ft], then tighten 60°
more.
(d) Tighten bolts according to the following sequence:
1. Tighten the cap bolts to specified torque
2. Tighten side bolts on the right side of the engine
3. Tighten side bolts on the left side of the engine
(e) Extremely important to use torque wrench in tightening the piston cooling nozzles. Failure to do so may result in excessive
tightening torque, which may cause valve malfunctions that could lead to seizing of pistons due to insufficient lubrication.
(f) Tighten connecting rod caps according to the angle method, tighten to 147 Nm [15 kpm)[108,5 lbf.ft], then tighten 45° more.
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Содержание D34A MS
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