Checking The Bolted Joints; Tightening Torque For Screws; Tightening Torque For Hose Clamps; Tightening Torque For Hydraulic Hoses - Kubota U17-3a Operating Instructions Manual

Maintenance

Checking the bolted joints

The table below contains the torques for nuts and bolts. These may only be tightened with a torque wrench.
Missing torques can be requested from KUBOTA.

Tightening torque for screws

Nm (kgf•m)
M 6
M 8
M 10
M 12
107.9~125.5
M 14
166.7~191.2
M 16
333.4~392.3
M 20
Note: When mounting the canopy, tighten 9 T screws with 7 T tightening torques

Tightening torque for hose clamps

13-20
15-24
22-32
26-38
40-60
38-50
50-65
68-85

Tightening torque for hydraulic hoses

Wrench size
14
17
19
22
27
Also applies to adaptors with pre-installed nut
4 T (4.6)
7.8~9.3
(0.8~0.95)
17.7~20.6
(1.8~2.1)
39.2~45.1
(4.0~4.6)
62.8~72.6
(6.4~7.4)
(11.0~12.8)
(17.0~19.5)
(34.0~40.0)
Size
Torque in Nm
20-25
25-30
30-35
40-45
50-55
7 T (8.8)
9.8~11.3
(1.0~1.15)
23.5~27.5
(2.4~2.8)
48.1~55.9
(4.9~5.7)
77.5~90.2
(7.9~9.2)
123.6~147.1
(12.6~15.0)
196.1~225.6
(20.0~23.0)
367.7~431.5
(37.5~44.0)
Torque in Nm
3.5-5
3.5-5
3.5-5
3.5-5
3.5-6
3.5-6
Hose size
DN 4-1/8"
DN 6-1/4"
DN 8-5/16"
DN 10-3/8"
DN 13-1/2"
9 T (9.8-10.9)
12.3~14.2
(1.25~1.45)
29.4~34.3
(3.0~3.5)
60.8~70.6
(6.2~7.2)
103.0~117.7
(10.5~12.0)
166.7~196.1
(17.0~20.0)
259.9~304.0
(26.5~31.0)
519.8~568.8
(53.0~58.0)
3.5
3.5
Thread
M12x1.5
M14x1.5
M16x1.5
M18x1.5
M22x1.5
103