Create the Joint between the Connecting Rod and Crank

The Joint Mesh Setup dialog box should still be open after creation of the previous joint.

1. Click the heading for Part 3 in the browser (tree view) to select the crank. Then, click View Navigate Zoom Selected (or the equivalent Navigation Bar command) to tightly enclose the crank within the display area. It does not matter if the crank is off-screen when it is selected.
   • Press Esc to clear the part selection.
2. If necessary, click the title bar of the Joint Mesh Setup dialog box, and drag it to a location where it does not block the selection of either of the crank holes.
3. Type 4 in the Part field (or decrement the part number from 5 to 4 using the down-arrow to the right of the input field). The joint between the crank and connecting rod can have the same element type, cross section, and material as the joint between the piston and connecting rod. Therefore, it is convenient to use the same part number for both of these joints.
4. With the  Selection Shape Circleand Selection Select Surfaces commands still active, draw a circle enclosing the hole where the connecting rod and crank meet, as shown in the following image.
   
5. Click Add in the Joint Mesh Setup dialog box. Two surfaces are added to the Participating surfaces list, one from the crank and one from the connecting rod.
6. Click OK to add the pin joint, which appears as shown in the following image.  
   

Next