MacDon M155 Operators Manual - Manual (Page 272)

MAINTENANCE AND SERVICING
Table 5.10 Flare-Type Hydraulic Tube Fittings
Torque Value 20
Flats from Finger
Tight (FFFT)
SAE No.
Tube Size
O.D. (in.)
Thread
Size (in.)
Nut Size
across
Flats (in.) ft·lbf N·m Flats Turns
3 3/16 3/8 7/16 6 8 1 1/6
4 1/4 7/16 9/16 9 12 1 1/6
5 5/16 1/2 5/8 12 16 1 1/6
6 3/8 9/16 11/16 18 24 1 1/6
8 1/2 3/4 7/8 34 46 1 1/6
10 5/8 7/8 1 46 62 1 1/6
12 3/4 1-1/16 1-1/4 75 102 3/4 1/8
14 7/8 1-3/8 1-3/8 90 122 3/4 1/8
16 1 1-5/16 1-1/2 105 142 3/4 1/8
20. Torque values shown are based on lubricated connections as in reassembly.
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Revision A