1.64 HYDRAULICS MAINTENANCE Torque tightening Where torque tightening figures are not given in the procedures, use the torque tightening settings in the following tables related to that fitting. The figures relate to thread sizes and are applicable to steel only and have a tolerance of 10%.
Male Union Adaptors Tube O/D Series Thread Torque Nm 6L G1/8A 16 6S G1/4A 55 8L G1/4A 35 8S G1/4A 55 10L G1/4A 35 10S G3/8A 80 12L G3/8A 70 12S G3/8A 80 15L G1/2A 90 16S G1/2A 115 18L G1/2A 90 20S G3/4A 180 22L G3/4A 180 25S G1A 310 28L G1A 310 30S G1 1/4A 450 35L G1 1/4A 450 38S G1 1/2A 540 42L G1 1/2A 540 6L M 10x1 18 6S M 12x1.5 35 8L M 12x1.5 25 8S M 14x1.5 55 10L M 14x1.5 45 10S M 16x1.5 70 12L M 16x1.5 55 12S M 18x1.5 90 15L M 18x1.5 70 16S M 22x1.5 135 18L M 22x1.5 125 20S M 27x2 180 22L M 26x1.5 180 25S M 33x2 310 28L M 33x2 310 30S M 42x2 450 35L M 42x2 450 38S M 48x2 540 42L M 48x2 540