Hydraulic Hose And Fitting Torque Specifications - Genie GTH-636 Service Manual

Section 2 • Specifications
SPECIFICATIONS
Hydraulic Hose and Fitting
Torque Specifications
Your machine is equipped with 37° flared fittings
and hose ends. Genie specifications require that
fittings and hose ends be torqued to specification
when they are removed and installed or when new
hoses or fittings are installed.
Torque Procedure
JIC 37° fittings
Use the JIC 37° Fittings table on
this page to determine the correct
number of flats for the proper
tightening position.
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.
d
a hydraulic hose
b hex nut
c reference mark
d body hex fitting
2 - 14 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
JIC 37° Fittings
(swivel nut or hose connection)
SAE Dash size
-4
-6
-8
-10
-12
-16
-20
-24
3 Working clockwise on the body hex fitting, make
a second mark with a permanent ink marker to
indicate the proper tightening position.
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
a
loosened.
b
c
b
c
a
b
c
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
June 2007
Thread Size
7 / -20
16
9 / -18
16
3 / -16
4
7 / -14
8
1 1 / -12
16
1 5 / -12
16
1 5 / -12
8
1 7 / -12
8
body hex fitting
reference mark
second mark
Part No. 97487
REV D
Flats
2
1 1 /
4
1
1
1
1
1
1
a
b