Hi guys. A simple solution for stubborn pitman arms that are worn and being replaced is to cut 90 percent of the way through it with a cutoff wheel on an air tool. By the time you get that far, the arm will usually crack and fall off.
When you use the pullers, I've seen people have better luck running them down tight with a regular wrench, then smacking the bolt head with a hammer to shock the arm loose.
Be aware that a lot of steering gear boxes use a bushing now to support the pitman shaft in the gearbox instead of a ball bearing. In the mid to late 1990's, I ran into about a dozen gear boxes where that bushing got hammered out, then the pitman shaft would walk sideways, bottom out, then start to rotate with the steering wheel. At first that led to excessive steering wander, then as it got worse, the shaft would move away from the rubber lip seal and leak power steering fluid. For that reason, I would worry about using an air impact wrench on the pitman arm puller. Chances are that won't cause a problem, but why take the chance.
Friday, July 24th, 2020 AT 7:04 PM