TORQUE LIMITS FOR FLARELESS FITTINGS

TORQUE LIMITS FOR FLARED AND PREFORMED FITTINGS

TORQUE LIMITS FOR PIPE FITTINGS - TM-5-3805-261-20_1212

TM-5-3805-261-20 Grader Heavy Road Motorized (Caterpillar Model 130 G) Manual
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TM 5-3805-261-20 APPENDIX E. (cont.) TORQUE LIMITS. (cont.) d. TABLE E-4. TORQUE LIMITS FOR AIR FITTINGS, HOSE CLAMPS AND PLUGS. (1) SAE Flareless Fitting. Bottom tube into fitting body and tighten nut until sleeve grips tube firmly enough to prevent movement. Tighten nut 1 to 1 1/4 additional turn. For reassembly, tighten until a sharp rise in torque is felt, then tighten an additional 1/6 to 1/3 turn. (2) High-duty (Shear Sleeve) Tube Fittings. Bottom tube into the fitting body and tighten nut until a slight yield is felt, indicating that the sleeve has been sheared from the nut. Tighten nut an additional 1/2 turn. (3) Flex Fittings. Slide nut and sleeve over tubing. Bottom tube in counterbore of fitting body. Tighten nut until it bottoms on hex part of fitting body. TABLE E-4. TORQUE LIMITS FOR FLARELESS FITTINGS Tube O.D. Torque for Non-Metallic Optional Turn Tightening-- (Inch) and Copper Tubing Turns After Finger Tightening LB-IN Tubing Tubing Non-Metallic Copper .250 75-125 3 Turns 2 Turns .375 150-200 4 Turns 2 Turns .500 250-350 4 Turns 2 Turns .625 300-400 3 1/2 Turns 3 Turns .750 400-500 3 1/2 Turns 3 Turns E-4

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