3 maintenance specifications – MacDon CA25 OM User Manual
Page 99
SECTION 8. MAINTENANCE AND SERVICING
169593
97
Revision B
8.3 MAINTENANCE SPECIFICATIONS
8.3.1 Recommended
Torques
Tighten all bolts to the torques specified in
chart (unless otherwise noted throughout
this manual).
Check tightness of bolts periodically, using
bolt torque chart as a guide.
Replace hardware with the same strength
bolt.
Torque figures are valid for non-greased or
non-oiled threads and heads (unless
otherwise specified).
Do not grease or oil bolts or capscrews
unless specified in this manual.
When using locking elements, increase
torque values by 5%.
8.3.1.1 SAE
Bolts
BOLT
DIA. "A"
(in.)
NC BOLT TORQUE*
SAE-5 SAE-8
lbf·ft N·m lbf·ft N·m
1/4
9
12
11
15
5/16
18
24
25
34
3/8
32
43
41
56
7/16
50
68
70
95
1/2
75
102
105
142
9/16
110
149
149
202
5/8
150
203
200
271
3/4
265
359
365
495
7/8
420
569
600
813
1
640
867
890
1205
* Torque categories for bolts and capscrews are identified
by their head markings.
8.3.1.2 Metric
Bolts
BOLT
DIA.
"A"
STD COARSE BOLT TORQUE*
8.8 10.9
lbf·ft N·m lbf·ft N·m
M3 0.4 0.5 1.3 1.8
M4 2.2 3 3.3 4.5
M5
4 6 7 9
M6 7 10 11 15
M8 18 25 26 35
M10
37 50 52 70
M12 66 90 92 125
M14 103 140 148 200
M16 166 225 229 310
M20 321 435 450 610
M24 553 750 774 1050
M30 1103 1495 1550 2100
M36 1917 2600 2710 3675
* Torque categories for bolts and capscrews are identified
by their head markings.
SAE-5 SAE-8