On 4-lug wheels, move diagonally for the first bolt, then across, then diagonally again. 1. HYTORC offers the latest hydraulic bolting technology with unique patented benefits that provide industry-leading safety and accuracy. The first time around tighten to approximately 1/2 of the final torque, and then repeat the sequence, tightening to the suggested torque limit. 2, 8, 14, 20 16, 10, 4, 1, 7, 13, 19 18, 12, 6, 3, 9, 15, 21 Do three go around, with the wrench set at , 30, then 55, then 70. Utilize a calibrated torque device to torque each bolt in a star pattern sequence. For wheels, star patern means if the bolts are in a circle pattern say:-----1----2-----3 -----4--5 then you do 1-5-2-3-4, hand tight then torque in the same pattern, this saves you tightening one side down and the otherside sitting funky. Utilize a calibrated torque device to torque each bolt in a star pattern sequence. Wheel Tightening Procedures. Tightening sequence 2. 2. Looking at the head from the passenger side 17, 11, 5. Torque Sequence: 1, 5, 9, 3, 7, 11, 2, 6, 10, 4, 8, 12 For 12 bolt flanges, torque bolts in a criss-cross sequence. Proper tightening of the wheel lugs is necessary to promote safety and proper brake operation. Initial torque is 70 #ft. Check that gasket is getting compressed uniformly. Lookup flange bolt torque patterns on your phone in seconds appropriate torque value in the sequence a star pattern illustrated in figure 1 figure 1 bolt tightening sequence, flange to flange assembly figure b5 estimated tightening torque values high pressure flanges as 4087 figure b6 pn16 grade 4 6 galvanised steel bolts … All wheels are to be tightened using either a hand torque wrench or torque limiting socket following the procedure below: 1. Torque bolts and nuts in a “CRISS-CROSS” sequence using a minimum of three torquing passes and the maximum bolt stress as defined. Incredible repeatability, reliability and durability HYTORC’s hydraulic bolting systems are the original torque/tension machines. Hand tighten all 5 lug nuts using star pattern. Apply the torque in three passes: 1st Pass: 30% of Target Torque; 2nd Pass: 60% of Target Torque; 3rd Pass: 100% of Target Torque - (2.2) For Nut sizes greater than 2 inches (A/F) , 3 torque sequence - steps in a "Star Pattern" will be done (In the First pass all nuts will be torqued at 33%, the second pass at 66% and the third pass at 100%), which will THEN be followed by a "Chase around" torque sequence at 100%. Apply the torque in three passes: 1st Pass: 30% of Target Torque; 2nd Pass: 60% of Target Torque; 3rd Pass: 100% of Target Torque Do not fully tighten the bolts the first time around as this can tilt the flange out of parallel. The sequence starts in the center of the head and works outward in a star pattern. At this point, all that’s needed is to get all of the hardware even, with no looseness or wobble in the wheel – 50 to 60 foot-pounds is enough for a good, snug fit. Step torquing. The pattern in which you tighten the lugs also makes a difference. The most common sequence is to move in a 'star' pattern on a 5-lug setup—start with a top-corner lug, and then move diagonally across until each lug has been tightened. PASS 1: Torque to a maximum of 30% of the final torque value in accordance with the torque sequence. PASS 2: Torque to a maximum of 60% of the final torque value. Tighten the fasteners following the traditional star pattern sequence shown at the right. Bolt torque Specifications: Shown is the bolt tightening sequences for typical circular flanges. This is very important even at the pre-torque stage. ’ s hydraulic bolting technology with unique patented benefits that provide industry-leading safety and accuracy works outward in a CRISS-CROSS... 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