Schumacher was second fastest for Williams on Friday

The two banged wheels at the Australian Grand Prix and Schumacher this week threatened to drive Montoya off the track if he tried the same move again.

Team owner Frank Williams said: "Words are easy, especially in the heat of the moment.

"They are free to race and bump wheels if it's the only way of getting by, but not push their team mates off."

Williams' comments are in response to Schumacher's threat to run Montoya off the track if he has to in Sunday's Malaysian Grand Prix.

Referring to Montoya's overtaking manoeuvre as he returned to the Albert Park track after running wide onto the grass, Ralf said: "That move was not the right thing to do.

Raikkonen tops Friday practice

"It was a pretty strong move and next time I will have him off the track."

The pair eventually finished a distant fourth and fifth - Schumacher ahead of Montoya - behind the dominant Ferraris.

Montoya will leave the Williams team at the end of the season and join McLaren.

He was angered by what he felt was preferential treatment Schumacher received when winning last year's French Grand Prix.

Montoya, meanwhile, feels Williams have a way to go before they can challenge the dominance of Ferrari this season.

The Colombian said: "I don't really expect a miracle. It's very hard to say we are going to have a miracle.

"We're on the right track but it's a shame we're not quicker or as quick as we wanted to be. It's very hard to say it's a car that's going to win races."

However, Montoya is hopeful of improving in the scorching heat of Sepang and also in Bahrain on 4 April.

Like McLaren and Renault, Williams use Michelin tyres, which last year performed better in hot conditions than Ferrari's Bridgestones.