Great Plains 3P1006NT Assembly Instructions - Manual (Page 14)

14 Great Plains Manufacturing, Inc. Front Page Part Lists Lift Assist Update
151-181M Front Page Part Lists 05/05/2011
Appendix
Hydraulic Connectors and Torque
Refer to Figure 127 (a hypothetical fitting)
Leave any protective caps in place until immediately prior
to making a connection.
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 foul filters).
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 tight-
ening, lubricate O-Ring with clean hydraulic fluid.
Use no sealants (tape or liquid) on JIC 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 17
Hydraulic Connector ID
31282
Fittings Torque Values
Fitting Ft-Lbs N-m
1 ⁄
4 NPT 1.5-3.0 turns past finger tight
5 ⁄
16 JIC 18-20 24-27
5 ⁄
16 ORB w/jam nut 12-16 16-22
5 ⁄
16
ORB straight 18-24 24-32
3 ⁄
4
JIC 27-39 37-53
3 ⁄
4
ORB w/jam nut 20-30 27-41
3 ⁄
4
ORB straight 27-43 37-58
1
1
2
4 5
3
5 7
8 9