Ptt Unit; General Tightening Torque - Yamaha F50D Servise Manual

PTT unit

Part to be tightened
Gear pump bracket bolt
Relief valve bracket bolt
Gear pump bolt
PTT motor bolt
Tilt piston bolt
Trim cylinder end screw
Tilt cylinder end screw
Reservoir cap
Manual valve

General tightening torque

This chart specifies tightening torque for
standard fasteners with a standard ISO
thread pitch. Tightening torque specifications
for special components or assemblies are
provided in applicable sections of this man-
ual. To avoid warpage, tighten multi-fastener
assemblies in a crisscross fashion and pro-
gressive stages until the specified torque is
reached. Unless otherwise specified, torque
specifications require clean, dry threads.
Components should be at room temperature.
Width
Screw
across
size (B)
flat (A)
8 mm M5
10 mm M6
12 mm M8
14 mm M10
17 mm M12
Special tightening torque / General tightening torque
General torque
specifications
N·m kgf·m ft·lb
5 0.5 3.7
8 0.8 5.9
18 1.8 13.3
36 3.6 26.6
43 4.3 31.7
Tightening torques
Thread size
N·m
M5 5.3
M5 5.3
M6 7
M6 4
M10 61
— 80
— 90
— 7
— 2
kgf·m ft·lb
0.5 3.9
0.5 3.9
0.7 5.2
0.4 3.0
6.1 45.0
8 59.0
9 66.4
0.7 5.2
0.2 1.5
1-16
0
1
2
3
4
5
6
7
8
9
10
A