Recommended Fastener Torque - BRADEN PD12C Series Installation Maintenance And Service Manual

BRAKE
VALVE
BR
DR
7. The winch directional control valve must be a
three position four way valve with a motor spool
such that when the valve is in the center position
both work ports are open to tank (open center,
open port).
8. High quality hydraulic oil is essential for
satisfactory performance and long hydraulic
system component life.

RECOMMENDED FASTENER TORQUE

Higher or lower torques for special applications will be specified such as the use of spanner nuts, nuts on shaft
ends, jam nuts and where distortion of parts or gaskets is critical.
Lubricated torque values based on use of SAE 30wt engine oil applied to threads and face of bolt or nut.
Avoid using thread lubricants as the applied torque may vary by 10-40% depending upon product used.
Bolt Dia. Thds Per
Inches Inch
20
1/4
28
18
5/16
24
16
3/8
24
14
7/16
20
13
1/2
20
12
9/16
18
11
5/8
18
To convert lb. ft. to kg•m, multiply lb. ft. value by 0.1383.
WINCH ASSEMBLY
W/BRAKE VALVE
& STATIC BRAKE
WINCH BRAKE
CONTROL
VALVE
PUMP
RECOMMENDED FASTENER TORQUE
Torque (LB-FT)
Grade 5 Grade 8
Dry Lubed Dry Lubed
8 6 12 9
17 13 24 18
31 23 45 35
50 35 70 50
75 55 110 80
110 80 150 110
150 115 210 160
Oil having 150 to 330 SUS viscosity at 100°F
(38°C) and viscosity index of 100 or greater will
give good results under normal temperature
conditions. The use of an oil having a high
viscosity index will minimize cold-start trouble and
reduce the length of warm-up periods. A high
viscosity index will minimize changes in viscosity
with corresponding changes in temperature.
Maximum cold weather start-up viscosity should
not exceed 5000 SUS with a pour point at least
20°F (11°C) lower than the minimum temperature.
Under continuous operating conditions the
temperature of the oil at any point in the system
must not exceed 180° (82°C). Optimum oil
temperature is generally considered to be 120-
140°F (49-60°C).
In general terms; for continuous operation at
ambient temperatures between 50 and 110°F (10
to 43°C) use SAE 20W; for continuous operation
between 10 and 90°F (-12 to 32°C) use SAE 10W;
for applications colder than 10°F (-12°C), contact
the BRADEN Service Department. The use of
multi-viscosity oils is generally not recommended.
9. The hydraulic oil filter should have a 10 micron
nominal rating and be full flow type.
Bolt Dia. Thds Per
Inches Inch
10
3/4
16
9
7/8
14
8
1
14
7
1 1/8
12
7
1 1/4
12
6
1 3/8
12
6
1 1/2
12
– 7 –
Torque (LB-FT)
Grade 5 Grade 8
Dry Lubed Dry Lubed
265 200 380 280
420 325 600 450
640 485 910 680
790 590 1290 970
1120 835 1820 1360
1460 1095 2385 1790
1940 1460 3160 2370