Lippert Components Trailer Axle (8-12K) - Manual (Page 18)

Rev: 04.18.2014
Page 18
Trailer Axle 8-12K Owners Manual FULL
Torque Requirements
It is extremely important to apply and maintain proper wheel mounting torque on your trailer axle. Torque
wrenches assure the proper amount of torque is being applied to a fastener. Use no other method to torque
fasteners.
Proper and accurate torque must be maintained to prevent wheels from loosening, studs from cracking and/
or breaking or other possible hazardous breakage resulting in death or serious injury.
Be sure to use only the fasteners matched to the cone angle of your wheel (usually 60°or 90°). The proper
procedure for attaching your wheels is as follows:
1. Start all bolts or nuts by hand to prevent cross threading.
2. Tighten bolts or nuts in the following sequence (see Wheel Torque Requirement Chart below).
3. Tightening fasteners should be done in stages. Follow the recommended sequence (Fig. 9), tighten
fasteners per wheel torque requirements chart below.
4. Wheel nuts/bolts should be torqued before first road use and after each wheel removal. Check and
re-torque after the 10 and 25 miles and again at 50 miles. A periodic check during regular service is
recommended.
1
6
4
5
3
2
8 7
Fig. 9
Wheel Torque Requirement Chart
Wheel Size Stud Size
Torque Sequence
1st Stage 2nd Stage 3rd Stage
14" 1/2" 20-25 ft-lbs 50-60 ft-lbs 90-120 ft-lbs
15" 1/2" 20-25 ft-lbs 50-60 ft-lbs 90-120 ft-lbs
16" 1/2" 20-25 ft-lbs 50-60 ft-lbs 90-120 ft-lbs
16.5" x 6.75" 1/2" 20-25 ft-lbs 50-60 ft-lbs 90-120 ft-lbs
16" 9/16" 20-25 ft-lbs 60-70 ft-lbs 120-130 ft-lbs
16.5" x 6.75" 9/16" 20-25 ft-lbs 60-70 ft-lbs 120-130 ft-lbs
16" Dual and 17.5" Cone Nut 5/8" 50-60 ft-lbs 100-120 ft-lbs 190-210 ft-lbs
16" Dual and 17.5" Flange Nut 5/8" 50-60 ft-lbs 150-200 ft-lbs 275-325 ft-lbs
14.5" Demount 5/8" Tighten sequentially to 85-95 ft-lbs