Section 00: GENERAL INFORMATION
PA1593
11
5.2 SELF-LOCKING FASTENERS
A self-locking fastener is designed with an
interference fit between the nut and bolt threads.
This is most often accomplished by distortion of
the top thread of an all-metal nut or bolt or by
using a nylon patch on the threads. A nylon
insert or the use of adhesives may also be used
as a method of interference between nut and
bolt threads (Fig. 11).
FIGURE 11 : SELF-LOCKING FASTENERS
00004
5.3 RECOMMENDATIONS FOR REUSE
Clean, rust-free self-locking fasteners may be
reused as follows:
a) Clean dirt and other foreign matter from
the fastener;
b) Inspect the fastener to ensure there is no
crack, elongation, or other sign of fatigue
or overtightening. If there is any doubt,
replace with a new self-locking fastener of
equal or greater strength;
c) Assemble parts and hand start fastener;
d) Observe that, before the fastener seats, it
develops torque per the chart in table two.
If there is any doubt, replace with a new
self-locking fastener of equal or greater
strength;
e) Tighten the fastener to the torque
specified in the applicable section of this
manual;
Fasteners which are rusty or damaged should
be replaced with new ones of equal or greater
strength.
SELF-LOCKING FASTENER TORQUE CHART
METRIC
6 & 6.3
8
10
12
14
16
20
NUTS AND
Nm
0.4
0.8
1.4 2.2 3.0 4.2 7.0
ALL-METAL
BOLTS
Lbf-in
4.0 7.0 12 18 25 35 57
ADHESIVE OR NYLON
Nm
0.4
0.6 1.2 1.6 2.4 3.4 5.6
COATED
BOLTS
Lbf-in
4.0 5.0 10 14 20 28 46
US STANDARD
¼
5/16
3/8
7/16
½
9/16
5/8
¾
NUTS AND
Nm
0.4
0.6
1.4 1.8 2.4 3.2 4.2 6.2
ALL-METAL
BOLTS
Lbf-in
4.0 5.0 12 15 20 27 35 51
ADHESIVE OR NYLON
Nm
0.4
0.6 1.0 1.4 1.8 2.6 3.4 5.2
COATED
BOLTS Lbf-in
4.0 5.0 9.0 12 15 22 28 43
5.4 SIX LOBED SOCKET HEAD
Six lobed socket head (Torx) fasteners are used
in some applications on vehicles covered in this
manual. The tools designed for these fasteners
are available commercially. However, in some
cases, if the correct tool is not available, a hex
socket head wrench may be used.
Summary of Contents for X3-45 2016
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Page 16: ...Section 00 GENERAL INFORMATION PA1593 12 FIGURE 12 METRIC US STANDARD CONVERSION TABLE 00005...
Page 17: ...Section 00 GENERAL INFORMATION 13 PA1593 FIGURE 13 CONVERSION CHART 00006...
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Page 72: ...Section 04 EXHAUST AND AFTERTREATMENT SYSTEM PA1593 14 7 TORQUE SPECIFICATIONS...
Page 73: ...SECTION 04 EXHAUST AND AFTERTREATMENT SYSTEM PA1593 15...
Page 74: ...Section 04 EXHAUST AND AFTERTREATMENT SYSTEM PA1593 16...
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Page 176: ...SECTION 06B ELECTRICAL 38 overcurrent working Circuit 306 shorted to ground...
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Page 205: ...Section 09 PROPELLER SHAFT PA1593 3 FIGURE 1 PROPELLER SHAFT ASSEMBLY 09002...
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Page 295: ...SECTION 16 SUSPENSION PA1593 9 2 5 TORQUE SPECIFICATIONS...
Page 296: ...Section 16 SUSPENSION PA1593 10...
Page 297: ...Section 16 SUSPENSION PA1593 11...
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Page 413: ...Section 22 HEATING AND AIR CONDITIONING PA1593 15 FIGURE 18 REFRIGERANT CIRCUIT CENTRAL SYSTEM...
Page 433: ...Section 22 HEATING AND AIR CONDITIONING PA1593 35 FIGURE 36 CENTRAL HEATING SYSTEM COMPONENTS...