Pollard crashed a blistering century in Friday's 42-run win which gave his team a 2-1 lead in the five-match series. That victory came after a heavy loss in the opener.
But Pollard has detected a new sense of determination among his teammates.
"The Australians have come pretty hard at us, but one good thing is that we have not backed down," said the burly all-rounder, whose 102 off 70 balls at Beausejour on Friday featured eight huge sixes.
"Every time they come at us we hit right back at them. The fans and the public are behind us, backing us, and when we show that we are not going to back down, no matter what, it shows that we have a strength in the team, a belief in ourselves and what we can do."
With West Indies' last series win over the Australians coming in 1995 - when Pollard was just eight - confidence is high.
"We will try to win the series 3-1. We are already up 2-1 and we cannot lose the series but we want to finish with a win.
"We have worked really hard to get here and we want to go all the way. The job is not yet done," he said.
"A series win against a higher-ranked team like Australia would be great, not only for the players, but also for the fans who come out and support us.
"Hopefully, we can go out there and do the job for each and every one of them. Their support means a lot to us."
Pollard scored his second ODI century in just five innings on Friday, following on from his hundred against India in Chennai last December.
His demolition of the Australian attack led the Windies to 294 for seven after being sent in to bat.
"I've been around for a little while now but I would say I'm still learning. Getting my second hundred for West Indies and my first in the Caribbean is a delight for me and for the team," he added.
"It is a stepping stone for me. Each game, each performance, is a learning experience and this is one that I will take forward with me - batting for the team and being there until the end."
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