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Revision A
4.
Torque the connector to the appropriate torque angle. The turns from finger tight (TFFT) and flats from finger tight
(FFFT) values are shown in Table
. Ensure that the tube end of a shaped connector (typically a 45° or 90°
elbow) is aligned to receive the incoming tube or hose assembly. Always finish the alignment of the fitting in the
direction of tightening. Never loosen the threaded connectors to achieve alignment.
5.
Clean all residue and any excess thread conditioner with an appropriate cleaner.
6.
Inspect the final condition of the fitting. Pay special attention to the possibility of cracks in the port opening.
7.
Mark the final position of the fitting. If a fitting leaks, disassemble the fitting and check it for damage.
NOTE:
The failure of fittings due to over-torquing may not be evident until the fittings are disassembled and inspected.
Table 7.9 Hydraulic Fitting Pipe Thread
Tapered Pipe Thread Size
Recommended TFFT
Recommended FFFT
1/8
–
27
2
–
3
12
–
18
1/4
–
18
2
–
3
12
–
18
3/8
–
18
2
–
3
12
–
18
1/2
–
14
2
–
3
12
–
18
3/4
–
14
1.5
–
2.5
12
–
18
1
–
11 1/2
1.5
–
2.5
9
–
15
1 1/4
–
11 1/2
1.5
–
2.5
9
–
15
1 1/2
–
11 1/2
1.5
–
2.5
9
–
15
2
–
11 1/2
1.5
–
2.5
9
–
15
