How Trump tariffs affect Ford, GE, Harley Davidson earnings

Hard evidence on how President Trump's tariffs, especially those on Chinese products, have actually affected U.S. manufacturers will come into focus this week as six major American corporations issue quarterly reports.

The companies report Tuesday and Wednesday, and results are expected to show a range of results in navigating the effects of the president's trade policies.

3M - earnings release expected Tuesday

Industrial-materials maker 3M has already revised its yearend outlook downward. It cited the U.S.-China trade situation, which have caused higher-than-expected costs, as well as a soft automotive market and expenses related to a divestiture of its communications market businesses. The company says it's prepared to make changes in where it sources its products as well as consider price increases if trade pressures continue.

Caterpillar - earnings release expected Tuesday

Caterpillar sells machinery to many industries, but one of its biggest revenue streams is equipment sold to farmers. The cutbacks in purchases of U.S. products announced by China are hitting the growers of soybean and pork goods particularly hard. And in the near term it will likely force many of them to hold off on equipment purchases. In addition, the company expects that Chinese tariffs will increase its own material costs by about $100-$200 million in the second half of this year and is planning to meet those challenge with price increases. Even in light of these concerns, Caterpillar has increased its full-year outlook after a strong first half of the year and because of planned price increases, as well as certain spending cuts. Some analysts are expecting the equipment maker's third-quarter earnings to "skyrocket" as much as 41 percent.

Harley Davidson - earnings release expected Tuesday

The motorcycle maker has recently stoked the president's ire after a very public announcement that it would be moving some of its U.S. production of motorcycles sold in Europe out of the country to three international hubs. The costs related to increased steel and aluminum pricing caused by the president's tariffs, as well as the costs of getting other facilities ramped up for the production move are estimated to be anywhere from $35 million to $45 million. Harley is also concerned that if current negotiations with the EU aren't concluded satisfactorily, more costs could be incurred on units sold there. Regardless, the company has had a good year so far, with earnings higher than the previous period last year and third-quarter earnings are expected to be up about 14 percent compared to the same quarter last year.