Wheel Torque Specifications
Wheel Torque Specifications
Maintain proper torque to provide safe and secure attachment of the
wheel hub/drum. Improperly tightened wheel nuts can cause the wheel to
separate from the wheel mounting surface during operation. This could
result in property damage, serious personal injury, or possibly loss of life.
WARNING!
NOTE
- if wheel does not have chamfers to match profile of the nuts – use flat side of nuts
against rim face.
Install all lug nuts/bolts by hand to prevent cross threading and tighten lug nuts/bolts following
the steps and tightening sequence diagram below.
STEP 1.
Torque to 20-25 ft/lbs of torque.
STEP 2.
Torque to 55-60 ft/lbs.
STEP 3.
Torque bolts/nuts to the final ft. lb rating (see bolt size below)
Lug Nut/Bolt Tightening Sequence
NOTE
- Recheck the torque settings of lug nuts/bolts after 10 km (6 miles) and again after 50
km (30 miles). Periodically and at the beginning of each season check the condition and the
torque of the lug nuts/bolts.
Bolt Size (Hub Size)
Final Torque*
1/2" dia. bolt (up to 3000 lb hubs)
90 ft. lbs
9/16" dia. bolt (4000 - 6500 lb hubs)
120 ft. lbs
5/8" dia. bolt (8000 - 12,000 lb hubs)
170 ft. lbs
3/4" dia. bolt (16,000 - 20,000 lb hubs)
300 ft. lbs
7/8" dia. bolt (25,000 lb hubs)
540 ft. lbs
22 mm dia. bolt (35,000 lb hubs)
540 ft. lbs
*’Dry Torque’ values shown.
If using a lubricant (eg oil, or anti-seize), use only 75% of the dry torque.
Salford BBI Inc.
Page 65
Endurance Operator Manual 2019 V1
07/23/19