07/11/2018
566-224M
TC5109-5323
Appendix
28
Tire Inflation Chart
Hydraulic Connectors and Torque
Refer to Figure 22 (a hypothetical fitting)
Leave any protective caps in place until immediately
prior to making a connection.
Tire Inflation Chart
Tire Warranty Information
Wheel
Tire Size
Inflation
All tires are warranted by the original manufacturer of the tire. Tire
warranty information is found in the brochures included with your
Operator’s and Parts Manuals or online at the manufacturer’s web sites
listed below. For assistance or information, contact your nearest
Authorized Farm Tire Retailer.
ManufacturerWeb site
Firestone www.firestoneag.com
Gleason www.gleasonwheel.com
Transport
12.5L x 15” F-Ply
620 kPa
90 psi
Transport/
Wings
12.5L x 15” 12-Ply
379 kPa
55 psi
NPT
- National Pipe Thread
Note tapered threads, no cone/flare, and no O-ring.
Apply liquid pipe sealant for hydraulic applications.
Do not use tape sealant, which can clog a filter and/or plug
an orifice.
JIC
- Joint Industry Conference (SAE J514)
Note straight threads
and the 37
cone
on “M” fittings
(or 37
flare on “F” fittings).
Use no sealants (tape or liquid) on JIC fittings.
ORB
- O-Ring Boss (SAE J514)
Note straight threads
and elastomer O-Ring
.
Prior to installation, to prevent abrasion during tightening,
lubricate O-Ring with clean hydraulic fluid.
Use no sealants (tape or liquid) on ORB fittings.
ORB fittings that need orientation, such as the ell depicted,
also have a washer
and jam nut
(“adjustable thread
port stud”). Back jam nut away from washer. Thread fitting
into receptacle until O-Ring contacts seat. Unscrew fitting to
desired orientation. Tighten jam nut to torque specification.
2
5
4
9
8
7
5
3
Figure 22
Hydraulic Connector ID
31282
Fittings Torque Values
Dash
Size
Fitting
N-m
Ft-Lbs
-4
1
4
-18 NPT
1.5-3.0 turns past finger
tight
-5
1
2
-20 JIC
19-20
14-15
-5
1
2
-20 ORB w/jam nut
12-16
9-12
-5
1
2
-20 ORB straight
19-26
14-19
-6
5
16
-18 JIC
24-27
18-20
-6
5
16
-18 ORB w/jam nut
16-22
12-16
-6
5
16
-18 ORB straight
24-33
18-24
-8
3
4
-16 JIC
37-53
27-39
-8
3
4
-16 ORB w/jam nut
27-41
20-30
-8
3
4
-16 ORB straight
37-58
27-43
1