4. Routine maintenance, inspection and operational testing of the emergency generator and associated. components must be overseen by a properly trained person [see MSFC(07), Sec. 604.5; NFPA. 99(99), Sec. 3-4.4.1.1(b)3; NFPA 110(99), Sec. 6-4.7; NFPA 110(02), Sec. 8.4.7].
If rain and wet roads are a concern, you should consider replacing your tires when they reach approximately 4/32 of remaining tread depth. Since water can't be compressed, you need enough tread depth to allow it to escape through the tire's grooves.f two of your tires have a lot of remaining tread depth, but you need to replace the other two because they were damaged or have worn out, you should replace them with a pair of tires that come as close as possible to matching your existing tires.
Valve stems (and tubes, for tube-type tires) should be replaced every time a tire is replaced.New tires typically have a slippery surface. Take it easy on your first 100 miles as the tireâs surface âscuffs inâ and provides maximum grip. This break-in period also gives you time to adjust to the difference in how the new tires feel compared to the old, worn tires â like getting use to a new pair of shoes.