What should be inspected regarding U-bolts in suspension?

The inspection of U-bolts in suspension systems is critical for ensuring the integrity and safety of the vehicle. When evaluating U-bolts, one of the primary considerations is their structural integrity. U-bolts must not be broken or missing because any damage or absence compromises the suspension's ability to properly support the load and maintain vehicle stability. This could lead to catastrophic failure while the vehicle is in motion, potentially resulting in accidents or further mechanical failure.

In contrast, while it is important for U-bolts to be clean and free of grease to facilitate proper inspection, cleanliness alone does not determine their functional efficacy. Similarly, while painting U-bolts can help prevent rust, it does not address structural integrity issues directly. The ability to maintain appropriate tension is also important, but this must be balanced with not over-tightening, which could lead to deformation or failure. Therefore, while the other aspects of U-bolt condition are relevant, the primary focus should always be on ensuring that they are intact and present, as this directly affects the performance and safety of the suspension system.