General Service Procedures; Bolt Torque Values; Wheel Hardware - MASSEY FERGUSON 1745 Workshop Service Manual

General Information

GENERAL SERVICE PROCEDURES

Bolt Torque Values

All bolts used on this machine are Grade 5 plated bolts
unless specified. Always replace with Grade 5 hardware
except where higher grades are specified. All Grade 5
bolts have three radial marks on the bolt head. Tighten all
hardware according to the following charts unless
specified differently in the manual.
Do not over tighten bolts as this can cause a bolt to fail
during operation.
See Specifications for wheel hardware torque.
Standard Bolt Torque Chart
Bolt Size Grade 2
Nm Lbf ft
5/16-18 15 11
3/8-16 27 20
7/16-14 43 32
1/2-13 66 49
9/16-12 95 70
5/8-11 130 97
3/4-10 235 170
7/8-9 225 165
1-8 340 250
Standard Bolt Identification
Grade 2
No Marks
Metric Bolt Torque Chart
Bolt Size Class 5.8
Nm Lbf ft
M 5 x 0.8 4 3
M 6 x 1 7 5
M 8 x 1.25 17 12
M 10 x 1.5 33 24
M 12 x 1.75 58 42
M 14 x 2 92 68
M 16 x 2 145 105
M 18 x 2.5 195 145
M 20 x 2.5 280 205
M 24 x 3 480 355
Identify metric bolts by the class number stamped on the bolt
head or nut. Higher numbers indicate higher strength.
01-22
Grade 5 Grade 8
Nm Lbf ft Nm Lbf ft
24 17 33 25
42 31 59 44
67 49 95 70
105 76 145 105
150 110 210 155
205 150 285 210
360 265 510 375
585 430 820 605
875 645 1230 910
Grade 5 Grade 8
3 Marks 6 Marks
Class 8.8 Class 10.9
Nm Lbf ft Nm Lbf ft
6 5 9 7
11 8 15 11
26 19 36 27
52 39 72 53
91 67 125 93
145 105 200 150
225 165 315 230
310 230 405 300
440 325 610 450
760 560 1050 780
Working Under the Tailgate
When the tailgate is raised for any maintenance or
service work, push the lockout valve into the LOCKED
position. This prevents the tailgate from being lowered.
The tailgate can only be lowered when the tailgate lockout
valve is released (pulled out).

Wheel Hardware

The wheels are fastened to the hubs with wheel nuts
installed on threaded studs in the hub flange. When
installing a wheel, clean the threads on the studs with a
steel brush and lubricate threads with oil. Tighten the
wheel hardware after every 50 hours of operation. See
Specifications for the correct torque.
4283399M1