Torques - JLG sky trak mmv Service Manual

2.3

TORQUES

2.3.1 Fasteners
All fasteners (nuts, bolts, washers, etc.) are equal to SAE
Grade 5 (PC8.8) and are plated, unless otherwise specified.
2.3.2 Bolts and Nuts
Unless otherwise specified, the following values apply for
Grade 5 (PC8.8) nuts and bolts:
Size Torque
Inch lb/ft Nm
1/4 9 12
5/16 17 24
3/8 31 42
7/16 50 68
1/2 75 102
9/16 110 150
5/8 150 203
3/4 250 340
7/8 380 515
1.0 585 793
2.3.3 Straight Thread O-ring Fitting
(Non-Adjustable)
When the vehicle leaves the factory, it is equipped only
with straight thread o-ring fittings. Customer-added ac-
cessories may differ; therefore, consult the manufactur-
er's product literature for information.
1. Verify that both threads and sealing surfaces are
free of burrs, nicks, scratches, and any foreign
material.
2. Lubricate the new o-ring with a light coating of
hydraulic oil.
Model MMV Rev. 12/04
General Information, Specifications and Maintenance
Size Torque
mm Nm lb/ft
6.0 10 7
8.0 25 18
10.0 50 37
-- -- --
12.0 80 59
14.0 130 95
16.0 200 146
20.0 360 263
22.0 510 372
24.0 650 475
3. Tighten fitting to the proper torque according to the
following chart:
SAE
Size
4
6
8
10
12
16
20
24
2.3.4 Straight Thread O-ring Fitting
(Adjustable)
When the vehicle leaves the factory, it is equipped only
with straight thread o-ring fittings. Customer-added ac-
cessories may differ; therefore, consult the manufactur-
er's product literature for information.
1. Verify that both mating parts are free of burrs, nicks,
scratches, and any foreign material.
2. Lubricate the new o-ring with a light coat of hydraulic
oil.
3. Back off the locknut as far as possible.
4. Screw the fitting into the port by hand until the back-
up washer contacts the face of the port and is
pushed all the way towards the locknut.
5. To position the fitting, unscrew by the required
amount, but not more than one full turn.
6. Hold the fitting in the desired position and tighten to
the proper torque according to the following chart:
Adjustable Straight-Thread O-ring
Fitting Torque Chart
SAE
Size
4
6
8
10
12
16
20
24
Torque
lb/ft Nm
15-17 20-23
34-36 46-49
58-62 79-84
100-110 136-149
134-146 181-198
202-218 274-296
248-272 336-369
303-327 411-443
Torque
lb/ft Nm
15-17 20-23
34-36 46-49
58-62 79-84
100-110 136-149
134-146 181-198
202-218 274-296
248-272 336-369
303-327 411-443
2.7