Inland Grapevine yards sit on clay that moves. In a wet spring the soil swells and a head that was flush in March sits high enough for the mower. In August the same clay shrinks, a gap opens around the body, and the head leans. The nozzle that used to land mid-lawn now stripes the sidewalk.
That lean is a head repair, and sometimes a swing-joint repair. The funny pipe takes the bend until it kinks or splits. Replacing only the nozzle leaves the tilt in place, so the new stream still leaves the yard. On a startup we reset height after the zone has run, not while the soil is still soft from the leak that brought us there.
Lots closer to Grapevine Lake do this less. Sandier pockets drain and the heads stay put, then fail from grit in the nozzle instead of from heave. If your dry spot showed up after a month of heat and the head is visibly cocked, say that when you call. It is a different truck stock than a valve that will not open.
The city still expects the water to stay on the lawn. A head pushed over by clay is one of the ordinary ways a Grapevine system starts watering the street. The standing ban from 10 a.m. to 6 p.m. does not fix a tilted head. The head has to come back to grade.
Call (469) 294-8444 if a head is spraying the walk or sitting above the grass. If you want the wider repair visit, start at head repair.