APPENDIX E
GENERAL TORQUE LIMITS
T M 9 - 2 8 1 5 - 2 0 2 - 34
REQUIRED
FOR FASTENERS IN ENGINE
E-1. GENERAL
This section provides the general torque limits for fasteners used on the 8V71T series engines.
Special torque limits are indicated in the maintenance procedures for applicable components. These
general torque limits cannot be applied to fasteners that retain rubber components. The rubber
components will be damaged before the torque limit is reached.
E-2. TORQUE LIMITS
Table E-1 lists dry torque limits. Dry torque limits are used on fasteners that do not have lubricants
applied to the threads. No wet torques are given because all wet torques are listed in the
maintenance procedure. The torques given are suitable for grade 5, 5.1, 7, and 8 fasteners. No grade
1 or 2 fasteners are used on an 8V71T series engine.
E-3. HOW TO USE THE TORQUE TABLE
a. Measure the shaft diameter of the fastener and count the number of threads per inch.
b. Under the heading THREAD SIZE, look down the column until you find the diameter and threads
per inch of the fastener. Next, look across that row and read the torque limit in Ib-ft or N-m.
Table E-1. Torque Limits for Dry Fasteners
THREAD SIZE
TORQUE LIMIT
inches
Ib-ft
N-m
1/4-20
1 /4-28
5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
7/1
6-20
1/2-13
1/2-20
9/1
6-12
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
7/8-9
7/8-14
1-8
1-14
8-10
13-17
15-19
30-35
35-39
46-50
57-61
71-75
83-93
90-100
107-117
137-147
168-178
240-250
290-300
410-420
475-485
580-590
685-695
10-12
11-14
18-23
20-26
41-47
47-53
62-68
77-83
96-102
113-126
122-136
146-159
186-200
228-242
325-339
393-407
556-569
644-657
786-800
928-942
E-1/E-2 Blank
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