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Diesel Engine Specifications
115
Capscrew Markings and Torque Values
CAU
TIO
N
When replacing capscrews, always use a capscrew of the same measurement and strength as the
capscrew being replaced. Using the wrong capscrews can result in engine damage.
Metric capscrews and nuts are identified by the grade number stamped on the head of the capscrew or on the
surface of the nuts. U.S. Customary capscrews are identified by radial lines stamped on the head of the capscrew.
The following examples indicate how capscrews are identified:
NOTE: :
1. Always use the torque values listed in the following tables when specific torque values are not available.
2. Do not use the torque values in place of those specified in other sections of this manual.
3. The torque values in the table are based on the use of lubricated threads.
4. When the ft-lb value is less than 10, convert the ft-lb value to in-lb to obtain a better torque with an in-lb torque
wrench. Example: 6 ft-lb equals 72 in-lb.
Capscrew Markings and Torque Values - Metric
Body
Size
Torque
Torque
Torque
Diameter Cast Iron Aluminum Cast Iron Aluminum Cast Iron Aluminum
mm N•m
ft-lb
N•m
ft-lb
N•m
ft-lb
N•m
ft-lb
N•m
ft-lb
N•m
ft-lb
6 9 5 7 4 13 10 7 4 14 9 7 4
7 14 9 11 7 18 14 11 7 23 18 11 7
8 23 17 18 14 33 25 18 14 40 49 18 14
10 45 33 30 25 65 50 30 25 70 50 30 25
12 80 60 55 40 115 85 55 40 125 95 55 40
14 125 90 90 65 180 133 90 65 195 145 90 65
16 195 140 140 100 280 200 140 100 290 210 140 100
18 280 200 180 135 390 285 180 135 400 290 180 135
20 400 290 - - 550 400 - - - - - -
17800016
17800017