O-Ring Face Seal (Orfs) Hydraulic Fittings - MacDon R85 Unloading And Assembly Instructions

F. O-RING FACE SEAL (ORFS)
HYDRAULIC FITTINGS
THD TUBE
SAE
SIZE O.D.
NO.
(in.) (in.)
3 *** 3/16
4 9/16 1/4
5 *** 5/16
6 11/16 3/8
8 13/16 1/2
10 1 5/8
12 1-3/16 3/4
14 1-3/16 7/8
16 1-7/16 1
20 1-11/16 1-1/4
24 2 1-1/2
32 2-1/2 2
* Torque values and angles shown are based on lubricated
connection, as in re-assembly.
** Always default to the torque value for evaluation of adequate
torque
*** O-ring face seal type end not defined for this tube size.
169561
RECOMMENDED
TORQUE VALUE*
(AFTER FINGER
TIGHTENING)**
Tube
ft·lbf N·m
Nuts
--- --- ---
–
11–12 14–16
1/4
--- --- ---
18–20 24–27
32–35 43–47
45–51 60–68
67–71 90–95
1/4 -1/2
67–71 90–95
93–100 125–135
126–141 170–190
– –
148 167 200 225
--- --- ---
GENERAL
a. Check components to ensure that the sealing
surfaces and fitting threads are free of burrs,
nicks, and scratches, or any foreign material.
b. Apply lubricant (typically Petroleum Jelly) to
O-ring and threads. If O-ring is not already
installed, install O-ring.
c. Align the tube or hose assembly. Ensure that
flat face of the mating flange comes in full
contact with O-ring.
d. Thread tube or hose nut until hand-tight. The
nut should turn freely until it is bottomed out.
Torque fitting further to the specified number of
F.F.F.T ("Flats From Finger Tight"), or to a given
torque value in the table shown in the opposite
column.
If available, always hold the hex on the
fitting body to prevent unwanted rotation
of fitting body and hose when tightening
the fitting nut.
e. When assembling unions or two hoses together,
three wrenches will be required.
TURNS TO
TIGHTEN
Swivel
& Hose
---
1/2–3/4
1/2
---
1/2–3/4
1/3 -1/2
---
7
NOTE
Revision C