Morbark M20R - Routine Maintenance; Tightening Torque Guide

03/15 • 47
ROUTINE MAINTENANCE
5588
Socket
headcap
screw
Socket
headcap
screw
5588
Socket
headcap
screw
Socket
headcap
screw
BoltDia
Thread
perinch
Dry Oiled Dry Oiled Dry Oiled BoltDia
Thread
perinch
Dry Oiled Dry Oiled Dry Oiled
1/4" 20 11 8 16 12 19 15 1/4" 28 14 9 19 14 22 18
5/16" 18 23 18 34 24 39 31 5/16" 24 26 19 39 27 45 35
3/8" 16 41 31 61 47 66 53 3/8" 24 47 34 68 54 73 59
7/16" 14 68 47 95 74 103 82 7/16" 20 74 54 108 81 115 92
1/2" 13 101 74 149 108 153 122 1/2" 20 122 88 135 108 170 135
9/16" 12 149 108 203 149 220 176 9/16" 18 162 122 230 176 244 194
5/8" 11 203 149 297 230 311 248 5/8" 18 243 176 324 243 344 275
3/4" 10 351 270 513 378 540 432 3/4" 16 405 297 567 432 594 473
7/8" 9 581 432 810 621 864 689 7/8" 14 635 486 891 675 945 756
1" 8 864 648 1215 918 1323 1053 1" 12 959 716 1337 999 1431 1141
TORQUEINNEWTON/METER
COARSE FINE
Grade Grade
BOLTTORQUEFACTORS
LUBRICANTORPLATING TORQUECHANGES
Oil Reducetorque15%to25%
DryFilm(Teflonormolybased) Reducetorque50%
Zincplating Reducetorque15%
DryWax(CetylAlcohol) Reducetorque50%
Chromeplating Nochange
Cadmiumplating Reducetorque25%
TIGHTENING TORQUE GUIDE