Assembly Instructions For O-Ring Face Seal (Orfs) Fittings - JLG 600SC Service And Maintenance Manual

SECTION 5 - BASIC HYDRAULICS INFORMATION & SCHEMATICS
Assembly Instructions for O-Ring Face Seal (ORFS)
Fittings
1. Ensure proper O-ring is installed. If O-ring is missing
install per O-ring Installation (Replacement).
2. Ensure surface is smooth, free of rust, weld and brazing
splatter, splits, dirt, foreign matter, or burrs. If necessary
replace fitting or adapter.
CARE TO BE TAKEN WHEN LUBRICATING O-RING. AVOID ADDING OIL TO THE
THREADED CONNECTION OF THE FITTING. THE LUBRICATION WOULD CAUSE
INCREASED CLAMPING FORCE AND CAUSE FITTING DAMAGE.
3. Pre-lubricate the O-ring with Hydraulic Oil.
4. Place the tube assembly against the fitting body so that
the flat face comes in contact with the O-ring. Hand
thread the nut onto the fitting body.
TYPE/FITTING IDENTIFICATION
Thread Size
Dash Size
(UNF)
4 9/16-18
6 11/16-16
8 13/16-16
10 1-14
12 1 3/16-12
16 1 7/16-12
20 1 11/16-12
24 2-12
32 2 1/2-12
* ØA and ØB thread dimensions for reference only.
** See FFWR and TFFT Methods for FFWR procedure requirements.
5-14
Table 5-7. O-ring Face Seal (ORFS) - Steel
ØA* ØB*
(in) (mm) (in) (mm)
0.51 13.00 0.56 14.20
0.63 15.90 0.69 17.50
0.75 19.10 0.81 20.60
0.94 23.80 1.00 25.40
1.11 28.20 1.19 30.10
1.34 34.15 1.44 36.50
1.59 40.50 1.69 42.90
1.92 48.80 2.00 50.80
2.43 61.67 2.50 63.50
5. Torque nut to value listed in Table 5-7, O-ring Face Seal
(ORFS) - Steel or Table 5-8, O-ring Face Seal (ORFS) - Alu-
minum/Brass while using the Double Wrench Method.
Refer to FFWR and TFFT Methods for procedure require-
ments if using the FFWR method.
NOTE: Torque values provided in Table 5-7, O-ring Face Seal
(ORFS) - Steel and Table 5-8, O-ring Face Seal (ORFS) - Alu-
minum/Brass are segregated based on the material config-
uration of the connection.
'ALUMINUM/BRASS FITTINGS OR ALUMINUM/BRASS
MATING COMPONENTS' indicate either the following
material configurations:
a. STEEL fittings with ALUMINUM or BRASS mating
components.
b. ALUMINUM or BRASS fittings with STEEL mating
components.
c. ALUMINUM or BRASS fittings with ALUMINUM or
BRASS mating components.
Torque
[Ft-Lb]
Min Nom Max Min
18 19 20 25
30 32 33 40
40 42 44 55
60 63 66 81
85 90 94 115
110 116 121 149
150 158 165 203
230 242 253 312
375 394 413 508
Flats from Wrench
Resistance
(F.F.W.R)**
[N-m] Swivel &
Tube
Hose
Nuts
Nom Max
Ends
26 27 1/4 to 1/2 1/2 to 3/4
43 45 1/4 to 1/2 1/2 to 3/4
57 60 1/4 to 1/2 1/2 to 3/4
85 89 1/4 to 1/2 1/2 to 3/4
122 127 1/4 to 1/2 1/2 to 3/4
157 164 1/4 to 1/2 1/2 to 3/4
214 224 1/4 to 1/2 1/2 to 3/4
328 343 1/4 to 1/2 1/2 to 3/4
534 560 1/4 to 1/2 1/2 to 3/4
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