Question

Technician a says that to cure a cracked rim that is leaking air out of tires, an inner tube should be installed. technician b says that a cracked rim can be repaired by welding using an e-7018 electrode. who is correct?

a) Only Technician A
b) Only Technician B
c) Both Technicians A and B
d) Neither Technician A nor B

Answer 1

C. Both Technician A and B are correct in their methods to fix a cracked rim, but their applicability depends on the type of rim and the required permanence of the repair.

Step-by-step explanation:

The question is about two possible methods to address a cracked rim that is causing air leakage in tires. Technician A suggests using an inner tube as a solution, while Technician B recommends welding the crack with an E-7018 electrode. Option c is correct, as both technicians are technically correct. Installing an inner tube can be a temporary fix for a cracked rim to prevent air from escaping.

However, it's usually done for non-alloy steel wheels commonly found on older or off-road vehicles. Contemporary vehicles mostly have alloy rims, which generally are not suitable for inner tubes. On the other side, welding a crack with an E-7018 electrode can be a permanent fix if done properly by a qualified professional. The E-7018 is a low-hydrogen electrode that's suitable for welding thicker steel and cast iron, which can make it appropriate for repairing steel rims. But care must be taken to ensure the structural integrity of the rim is not compromised during the repair. Using an inner tube can be a temporary fix, while welding with an E-7018 electrode can offer a more permanent solution.