Morris Quantum - Tighten Bolts; Tires

Maintenance
January 2019 6-3
Tighten Bolts
• Before operating the machine.
• After the rst two hours of operation.
• Check tightness periodically thereafter.
• Use Bolt Torque Chart for correct values on various
bolts.
• Note dashes on hex heads to determine correct
grade.
Note: DO NOT use the values in the Bolt Torque
Chart if a different torque value or tightening
procedure is given for a specific application.
• Fasteners should be replaced with the same or higher
grade. If higher grade is used, only tighten to the
strength of the original.
Tires
• Inspect tires and wheels daily for tread wear, side
wall abrasions, damaged rims or missing lug bolts
and nuts. Replace if necessary.
• Tighten wheel bolts - refer to Bolt Torque Chart.
• Check tire pressure daily, when tires are cold.
• Correct tire pressure is important.
• Do not inate tire above the recommended pressure.
Tire Specications
SIZE LOAD RANGE PRESSURE
4.80-8 NHS 4 ply rating 12 P.S.I.
600/50-22.5 16 ply rating 38 P.S.I.
Wheel Bolt Torque
SIZE Torque
1/2 75 lb. ft. (102 Nm)
M22 400 lb. ft. (542 Nm)
Bolt Torque Chart
Grade 5
Bolt Marking
Bolt
Size
Grade 8
Bolt Marking
Nm lb. ft. lb. ft. Nm
11 8 1/4 12 16
23 17 5/16 24 33
41 30 3/8 45 61
68 50 7/16 70 95
102 75 1/2 105 142
149 110 9/16 155 210
203 150 5/8 210 285
366 270 3/4 375 508
536 395 7/8 610 827
800 590 1 910 1234
1150 850 1-1/8 1350 1850
1650 1200 1-1/4 1950 2600
2150 1550 1-3/8 2550 3400
2850 2100 1-1/2 3350 4550
Caution
Tire replacement should be done by trained
personnel using the proper equipment.