Torque Recommendations For Hydraulic Fittings - WBM KOMATSU GD655-6 Manual

APPENDIX
TORQUE CHARTS

Torque Recommendations for Hydraulic Fittings

DASH SIZE
1/16 INCH
-3
-4
-5
-6
-8
-10
-12
-14
-16
-20
-24
DASH SIZE
1/16 INCH
-4
-5
-6
-8
-10
-12
-16
-20
-24
-32
DASH SIZE
1/16 INCH
-8
-12
-16
-20
-24
-32
4
1
Weldco-Beales Manufacturing
FLAT FACE O-RING SEAL
(STEEL)
ft lb
MIN MAX
10 12
18 20
32 40
46 56
65 80
65 80
92 105
125 140
150 180
JIC 37° (STEEL)
TORQUE (ft lb)
MIN MAX
10 11
13 15
17 19
34 38
50 56
70 78
94 104
124 138
156 173
219 243
4 BOLT FLANGES
BOLT SIZE TORQUE
INCH ft lb
5/16 17
3/8 26
7/16 43
1/2 65
5/8 130
3/4 220
2
TORQUING PATTERN
3
SAE O-RING BOSS (STEEL)
O4000 PSI
ft lb
MIN MAX
8 9
14 16
24 26
37 44
50 60
75 83
111 125
133 152
156 184
FLATS METHOD DASH SIZE
FLATS 1/16 INCH
1-1/2 to 1-3/4
1-1/2 to 1-3/4
1 to 1-1/2
1-1/2 to 1-3/4
1 to 1-1/2
1 to 1-1/2
3/4 to 1
3/4 to 1
3/4 to 1
3/4 to 1
NOTES
1. TORQUE VALUES ARE FOR UN-LUBRICATED
STEEL COMPONENTS. FOR OTHER
MATERIALS, PLATING OR LUBRICATED
THREADS REFER TO OEM LITERATURE.
2. MINIMUM TORQUE VALUES SHOULD
CREATE A LEAKPROOF SEAL UNDER MOST
CONDITIONS. EXCEEDING MAXIMUM
VALUES CAN DISTORT, CRACK OR DEFORM
THE FITTING.
3. O-RINGS SHOULD BE LUBRICATED WITH
LIGHT OIL, BUT THE THREADS SHOULD BE
COMPLETELY DRY.
WBM
SAE O-RING BOSS (STEEL)
>4000 PSI
ft lb
MIN MAX
8 10
14 16
18 20
24 26
50 60
72 80
125 135
160 180
200 220
210 280
270 360
NPTF
MAX TORQUE
ft lb
-2 20
-4 25
-6 35
-8 45
-12 55
-16 65
-20 80
-24 95
-32 120
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