Fastener
Fastener
Name
Torque lb-ft
(N•m)
0.75 NC x
5.0"
Spring eye
clamp bolt
165–210
(68–136)
0.75 NF Spring
center bolt
165–210
(224–285)
27
1 NF U-bolt,
spring
28
Refer to
section on
Suspension
U-Bolts,
Grade 8.
0.5 UNC Air bag stud
nut
40–50 (54–
68)
M16 Tracking
rod bolts
155–195
(210–264)
Air-Trac Fastener Torque Values
Fastener
Fastener
Name
lb•ft (N•m)
M16 Tracking
rod bolts
155–195
(210–264)
0.75 NF Spring
center bolt
165–210
(224–285)
29
M16 0.75
NF
Radius rod
bolts
(forward)
155–195
(210–264)
Radius rod
bolts (at
axle)
250–350
(339–475)
M16 Frame
bracket
bushing
bolts
50–65 (68–
88)
Fastener
Fastener
Name
lb•ft (N•m)
1.0 NF
U-bolt
30
Refer to
section on
Suspension
U-Bolts,
Grade 8.
0.5 UNC Air bag stud
nut
40–50 (54–
68)
M16 Tracking
rod bolts
155–195
(210–264)
Noise Control System -
Maintenance Log
To ensure your vehicle's noise control
requirements are maintained, record
maintenance checks. Use the following log
sheet and retain copies of documents
27
Torque requirement applies at subassembly of air spring support and leaf spring only.
28
PACCAR proprietary suspension U-bolts must be tightened in a specific sequence. Take your vehicle to an authorized dealer to
tighten the U-bolts on your vehicle.
29
Torque requirement applies at subassembly of airspring support and leaf spring only.
30
See owners manual for torque tightening sequence.
MAINTENANCE - Specification Reference Charts
Y53-6076-1D1 (09/20) 283
5
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