Peterbilt 365 - Page 283

Peterbilt Rear Suspension U-bolts
Rear
Suspensio
n Type
U-Bolt
Diamet
er
Torque lb-ft
(N•m)
24
Low Air
Leaf (U-bolt,
spring)
M22 x
1.5
375–475 (508–
644)
Flex Air M22 x
1.5
325–375 (440–
508)
Tandem
Low Air
Leaf
M22 x
1.5
375–475 (508–
644)
Air Leaf (U-
bolt, spring)
1.0 -in.
NF
450–550 (610–
746)
Air-Trac 1.0 -in.
NF
450–550 (610–
746)
13.5K Taper
Leaf (Axle
U-bolt)
¾ -in.
16 UNF
275–320 (373–
434)
Peterbilt Rear Suspension U-bolts
Rear
Suspensio
n Type
U-Bolt
Diamet
er
Torque lb-ft
(N•m)
18K Taper
Leaf (Axle
U-bolt)
¾ -in.
16 UNF
275–320 (373–
434)
18K Air Leaf
(Axle U-
bolt)
¾ -in.
16 UNF
275–320 (373–
434)
For all non-PACCAR suspension
systems, see the manufacturer’s
operator’s manual for torque
specifications.
NOTE
The values shown here are for sus-
pension U-bolts and should not be ap-
plied to bolts and fasteners for the
frame.
Low Air Leaf Torque Values
Low Air Leaf Torque values apply to both
single and tandem axles.
Fastener
Fastener
Name
Torque lb•ft
(N•m)
M20 x 2.5 Bar pin
bolts
325–425
(441–576)
M22 x 1.5 U-bolt,
spring
25
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)
24
Torques listed are for primed (or non-oiled) U-bolts.
25
Contact your dealer for torque tightening procedure.
MAINTENANCE - Specification Reference Charts
Y53-6076-1D1 (09/20) 281
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