operators_manual

Metric Fastener
Size (with
nylon insert
nuts)
Tightening
Specification lb-ft
(N•m)
M16 120-160 (163-217)
M20 260-340 (352-460)
M20 (All Metal
Lock Nuts)
315-350 (427-475)
Related concepts
Suspension U-Bolts, Grade 8
Torque specifications for suspension u-
bolts.
Tighten all U-Bolts with a torque wrench.
Torque specifications apply to the following
fasteners with lightly lubricated threads.
Chevron Zinc Lubricant or SAE 20/30 oil
should be used on U-Bolt threads. Torque
requirements apply to manufacturer
proprietary suspensions. All other
suspensions must refer and adhere to
original manufacturers shop manual.
Standard and Metric Fastener
Torque for Grade 8 U-Bolts
U-Bolt Size
Diameter
(inches)
Torque
(N•m)
Torque ( lb-
ft)
3/4 333-408 245-300
7/8 598-734 440-540
1 925-1,060 680-780
1 1/8 1,470-1,660 1,080-1,220
1 1/4 1,890-2,120 1,390-1,560
1 1/2 3,130-3,860 2,300-2,840
M20 475 +/- 27 350 +/- 20
The values shown here are for suspension
u-bolts and should not be applied to bolts
and fasteners for the frame.
Related concepts
Rear Suspension Fasteners
Torque requirements for rear suspension
fasteners, including standard and metric
fasteners.
Torque requirements apply to manufacturer
proprietary suspensions. All other
suspensions must refer and adhere to
original manufacturers shop manual.
SIZE/TYPE
TORQUE
N•m Lb-Ft
M16 nylon-
insert nuts
163-217 120-160
M20 nylon-
insert nuts
352-460 260-340
M20 all-
metal lock
nuts
427-475 315-350
1/2 in. nut 109-122 80-90
3/4 in. nut 394-462 290-340
1-1/4 in. nut 1,877-2,217 1,380-1,630
MAINTENANCE - Specification Reference Charts
276 Y53-6047-2HEN (03/18)
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