Great Plains PTO Kits 2-3-Section - Manual (Page 90)

86 2- & 3-Section YP PTO Pumps Table of Contents Index Great Plains Manufacturing, Inc.
411-015M Table of Contents Index 2014-09-10
Hydraulic Fitting Torque
Connector Identification
Refer to Figure 79 (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
tightening, 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 79:
Hydraulic Connector ID
31282
Fittings Torque Values
Fitting Ft-Lbs N-m
1 ⁄
4
NPT 1.5-3.0 turns past finger tight
9 ⁄
16
JIC 18-20 24-27
9 ⁄
16
ORB w/jam nut 12-16 16-22
9 ⁄
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