J&M 4WS15, Руководство оператора

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7
Bolt Torque Specifications
TIGHTENING WHEEL NUTS:
Torque 9/16”-18 lug nuts on wheels to 170 ft-lbs during initial operation of the header wagon. Check
for proper torque after every 10 hours of use. Failure to do so may damage wheel nut seats. Once seats are damaged it will become
impossible to keep nuts tight.
Always tighten hardware to these values unless a different torque or tightening procedure is listed for specific application. Fasteners must
always be replaced with the same grade as specified in the manual parts list. Always use the proper tool for tightening hardware. Make
sure fastener threads are clean and you start thread engagement properly.
Use these values when tightening all bolts and nuts with
the exception of wheel nuts.
Stud and Wheel Nut Torque Specifications
Stud Tightening Torque
1/2”-20 80 ft-lbs
9/16”-18 170 ft-lbs
5/8”-18 350 ft-lbs
3/4”-16 400 ft-lbs
20mm 475 ft-lbs
22mm 640 ft-lbs
Always tighten hardware to these values unless a different torque or tightening procedure is listed for specific application. Fasteners must
always be replaced with the same grade as specified in the manual parts list. Always use the proper tool for tightening hardware. Make
sure fastener threads are clean and you start thread engagement properly.
Use these values when tightening all studs and wheel
nuts.
SAE Fasteners
Coarse Thread Series
Grade 5 Grade 8
Diameter and Pitch (Inches) Dry Oiled Dry Oiled
1/4”-20 8 ft-lbs 6 ft-lbs 12 ft-lbs 9 ft-lbs
5/16”-18 17 13 25 18
3/8”-16 31 23 44 33
7/16”-14 49 37 70 52
1/2”-13 75 57 106 80
9/16”-12 109 82 154 115
5/8”-11 150 113 212 159
3/4”-10 267 200 376 282
7/8”-9 429 322 606 455
1”-8 644 483 909 681
Fine Thread Series
Diameter and Pitch (Inches) Dry Oiled Dry Oiled
1/4”-28 10 ft-lbs 7 ft-lbs 14 ft-lbs 10 ft-lbs
5/16”-24 19 15 27 20
3/8”-24 35 26 49 37
7/16”-20 55 41 78 58
1/2”-20 85 64 120 90
9/16”-18 121 91 171 128
5/8”-18 170 127 240 180
3/4”-16 297 223 420 315
7/8”-14 474 355 669 502