How do you torque a flange bolt?
Tightening sequence. The first pass, lightly tighten the first bolt then move directly across or 180 degrees for the second bolt, then move1/4 turn around the circle or 90 degrees for the third bolt and directly across for the fourth. Continue this sequence until all bolts are tightened.
How much torque do you need for an exhaust flange?
Flanges are found on a variety of parts associated with exhaust repairs. Each has its own process for achieving proper torque and successful installation. In general, all nuts are secured following a progressive, higher torque sequence. For example, the nuts require 60-ft.-lbs. of torque. Begin by torquing nut one, two and three to 20-ft.-lbs.
How to calculate the torque of a flange bolt?
Flange Bolt Torque Sequence 1 PASS 1 Torque Sequence: Torque to a maximum of 30% of the final torque value in accordance with the torque sequence. Check that gasket is getting compressed uniformly. 2 PASS 2 Torque Sequence: Torque to a maximum of 60% of the final torque value. 3 PASS 3 Torque Sequence: Torque to the final torque value (100%).
When to use hydraulic Torquing on a flange bolt?
The clamp load produced during tightening is higher than 75% of the fastener’s proof load. To achieve the benefits of the pre-loading, the clamping force in the screw must be higher than the joint separation load. When the bolt loading requires a torque higher than 678 Nm (500 ft-lbs.) to be applied, hydraulic bolt torquing is recommended.
Where does the tightening sequence start on an exhaust manifold?
Typically, the tightening sequence begins in the middle of the manifold while working your way out evenly between both sides. Be sure to review manufacturer’s recommended torque sequence for each application.
Flanges are found on a variety of parts associated with exhaust repairs. Each has its own process for achieving proper torque and successful installation. In general, all nuts are secured following a progressive, higher torque sequence. For example, the nuts require 60-ft.-lbs. of torque. Begin by torquing nut one, two and three to 20-ft.-lbs.
Where to check torque of exhaust Flang nuts?
I always check the torque values after everything is bolted up too. (On my 2004 Ultra, you start the torquing sequence on the top or bottom of the front flange and the OTHER ORDER on the rear flange.) (You must log in or sign up to reply here.)
How to find the torque of a flange bolt?
Flanges Look up flange bolt sizes and torque patterns in three taps with Flange Bolt. Just enter the flange size, type, and class, and the tool instantly shows the ASME values for: 1.
Do you need to tighten the exhaust nut on a Harley?
I {Heart} Hookers. There’s a torque “procedure” that requires the torque of the lower nut, then the top nut. If just “tightened” you risk breaking a stud. Warranty won’t cover it if you do it wrong. The gasket should also be inspected, due to exhaust gasses leaking there now, however, they’re likely to just slap a new nut on and be done with it.