Section 2 • Specifications
September 2016
Part No. 227656
GR-20J • GR-26J
2 - 5
Torque Procedure
Seal-Lok™ fittings
1 Replace the O-ring. The O-ring must be
replaced anytime the seal has been broken.
The O-ring cannot be re-used if the fitting or
hose end has been tightened beyond finger
tight.
Note: The O-rings used in the Parker Seal Lok™
fittings and hose ends are custom-size O-rings.
They are not standard SAE size O-rings. They are
available in the O-ring field service kit (Genie part
number 49612).
2 Lubricate the O-ring before installation.
3 Be sure that the face seal O-ring is seated and
retained properly.
4 Position the tube and nut squarely on the face
seal end of the fitting and tighten the nut finger
tight.
5 Tighten the nut or fitting to the appropriate
torque per given size as shown in the table.
6 Operate all machine functions and inspect the
hoses and fittings and related components to
confirm that there are no leaks.
JIC 37° fittings
1 Align the tube flare (hex nut) against the nose
of the fitting body (body hex fitting) and tighten
the hex nut to the body hex fitting to hand-
tight, approximately 30 in-lbs / 3.4 Nm.
2 Make a reference mark on one of the flats of
the hex nut, and continue it on to the body hex
fitting with a permanent ink marker. Refer to
Figure 1.
Figure 1
a
hex nut
b
reference mark
c
body hex fitting
3 Working clockwise on the body hex fitting,
make a second mark with a permanent ink
marker to indicate the proper tightening
position. Refer to Figure 2.
Note: Use the
JIC 37° Fittings
table on the
previous page to determine the correct number of
flats for the proper tightening position.
Note: The marks indicate that the correct
tightening positions have been determined. Use
the second mark on the body hex fitting to
properly tighten the joint after it has been
loosened.
Figure 2
a
body hex fitting
b
reference mark
c
second mark
4 Tighten the hex nut until the mark on the hex
nut is aligned with the second mark on the
body hex fitting.
5 Operate all machine functions and inspect the
hoses and fittings and related components to
confirm that there are no leaks.
a
b
c
a
b
c
b
SPECIFICATIONS
