Toro ProForce Debris, Service Manual

Page: 16 / 80

PRELIMINARY – For Toro Distributor
and Toro Company
use only.
ProForce Debris Blower Page 2 − 6 Product Records and Maintenance
Other Torque Specifications
SAE Grade 8 Steel Set Screws
Thread Size
Recommended Torque
Thread Size
Square Head Hex Socket
1/4 − 20 UNC 140 + 20 in − lb 73 + 12 in − lb
5/16 − 18 UNC 215 + 35 in − lb 145 + 20 in − lb
3/8 − 16 UNC 35 + 10 ft − lb 18 + 3 ft − lb
1/2 − 13 UNC 75 + 15 ft − lb 50 + 10 ft − lb
Thread Cutting Screws
(Zinc Plated Steel)
Type 1, Type 23 or Type F
Thread Size Baseline Torque*
No. 6 − 32 UNC 20 + 5 in − lb
No. 8 − 32 UNC 30 + 5 in − lb
No. 10 − 24 UNC 38 + 7 in − lb
1/4 − 20 UNC 85 + 15 in − lb
5/16 − 18 UNC 110 + 20 in − lb
3/8 − 16 UNC 200 + 100 in − lb
Wheel Bolts and Lug Nuts
Thread Size Recommended Torque**
7/16 − 20 UNF
Grade 5
65 + 10 ft − lb 88 + 14 N − m
1/2 − 20 UNF
Grade 5
80 + 10 ft − lb 108 + 14 N − m
M12 X 1.25
Class 8.8
80 + 10 ft − lb 108 + 14 N − m
M12 X 1.5
Class 8.8
80 + 10 ft − lb 108 + 14 N − m
** For steel wheels and non − lubricated fasteners.
Thread Cutting Screws
(Zinc Plated Steel)
Thread
Size
Threads per Inch
Baseline Torque* Size
Type A Type B
Baseline Torque*
No. 6 18 20 20 + 5 in − lb
No. 8 15 18 30 + 5 in − lb
No. 10 12 16 38 + 7 in − lb
No. 12 11 14 85 + 15 in − lb
* Hole size, material strength, material thickness & finish
must be considered when determining specific torque
values. All torque values are based on non − lubricated
fasteners.
Conversion Factors
in − lb X 11.2985 = N − cm N − cm X 0.08851 = in − lb
ft − lb X 1.3558 = N − m N − m X 0.7376 = ft − lb