The friction surfaces of the head and sockets should be kept clean and well lubricated with a good quality multi‑purpose or bearing grease. These are the surfaces where the arm sockets rub against the top and bottom plates of the head. See Figure 23. We recommend Equal-i-zer high performance lubricant.

They should be lubricated before each trip. Check for damage or abnormal wear at the beginning of each towing day and replace if necessary. Clean dirt and road grit from all friction surfaces regularly.

All nuts and bolts should be checked before each towing day and be tightened or replaced if necessary.

Pay special attention to the angle set bolt. There is a break-in period for each hitch and towing configuration. This period is not the same for every towing configuration. With use, the spacer washers and rivet may compact slightly leaving a small gap between the angle set bolt and the shank. The bolt should be checked carefully through the break-in period and re-tightened as explained in Step 9. You will notice that over time the need to re-tighten the angle set bolt will decrease, but you should still check it regularly before each towing day as part of your hook-up routine.

Store your hitch out of the weather when not in use. Keep it clean and free from rust. From time to time, use a good quality rust inhibiting spray paint to touch up the finish and keep it looking good. Do not paint over the warning stickers. If the warning stickers become worn or unreadable, contact Progress Mfg. Inc. for free replacement.