Question

technician a says that when lubricating a u-jointand grease does not exit from one of the fourtrunnion seals, the u-joint must be immediatelyreplaced. technician b says that backing off thebearing cap on a u-joint sometimes helps a trunnionto take grease. who is correct?

Answer 1

Technician A and Technician B have different opinions on lubricating a u-joint. Technician A is correct in suggesting that a u-joint must be replaced if grease does not exit from one of the trunnion seals. Technician B is also correct in saying that sometimes backing off the bearing cap can help the trunnion take grease.

Step-by-step explanation:

Technician A and Technician B have different viewpoints on the issue of lubricating a u-joint. Technician A claims that if grease does not exit from one of the four trunnion seals when lubricating a u-joint, the u-joint must be immediately replaced. On the other hand, Technician B suggests that sometimes the trunnion can take grease by backing off the bearing cap on a u-joint.

Now, let's evaluate their statements. Technician A is correct in the sense that if one of the trunnion seals is not allowing grease to exit, it indicates a problem with the seal and the u-joint may need to be replaced. This is because the lack of lubrication can lead to excessive wear and damage to the u-joint.

Technician B is also correct to some extent. Backing off the bearing cap can relieve pressure and allow the trunnion to take grease more easily. This can help in situations where the trunnion is not receiving enough lubrication. However, it is important to note that this is not a permanent solution and should not be used as a substitute for replacing a faulty u-joint.