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TIGHTENING O-RING FITTINGS*
1. Inspect O-ring and seat for dirt or obvious
defects.
2. On angle fittings back the lock nut off until
washer bottoms out at top of groove.
3. Hand tighten fitting until back-up washer or
washer face (if straight fitting) bottoms on face
and O-ring is seated.
4. Position angle fittings by unscrewing no more
than one turn.
5. Tighten straight fittings to torque shown.
6. Tighten angle fittings to torque shown while
holding body of fitting with a wrench.
*
The torque values shown are based on
lubricated connections as in reassembly.
TIGHTENING FLARE TYPE TUBE FITTINGS*
1. Check flare and flare seat for defects that might
cause leakage.
2. Align tube with fitting before tightening.
3. Lubricate connection and hand tighten swivel
nut until snug.
4. To prevent twisting the tube(s), use two
wrenches. Place one wrench on the connector
body and with the second tighten the swivel nut
to the torque shown.
*
The torque values are based on lubricated
connections in reassembly.
TORQUE SPECIFICATIONS
Thread
Size
(in.)
1-1/16
1-3/16
1-5/16
Thread
Size
OD
(in.)
18
Nut
Size
Torque
Across
Value
Flats
(in.)
(N.m)
(lb-ft) (Flats)
3/8
1/2
8
7/16
9/16
12
1/2
5/8
16
9/16
11/16
24
3/4
7/8
46
7/8
1
62
1-1/4
102
1-3/8
122
1-1/2
142
1-5/8
1-7/8
190
1-7/8
2-1/8
217
Nut
Size
Torque
Across
Value
Flats
(in.)
(N.m)
3/16
7/16
8
1/4
9/16
12
5/16
5/8
16
3/8
11/16
24
1/2
7/8
46
5/8
1
62
3/4
1-1/4
102
7/8
1-3/8
122
Recommended
Turn to Tighten
(After Finger
Tightening)
(Turns)
6
2
1/3
9
2
1/3
12
2
1/3
18
2
1/3
34
2
1/3
46
1-1/2
1/4
75
1
1/6
90
1
1/6
105
3/4
1/8
140
3/4
1/8
160
1/2
1/12
Recommended
Turn to Tighten
(After Finger
Tightening)
(lb-ft) (Flats)
(Turns)
6
1
1/6
9
1
1/6
12
1
1/6
18
1
1/6
34
1
1/6
46
1
1/6
75
3/4
1/8
90
3/4
1/8
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