The phrase "a tool to maintain" is correct and usable in written English.
You can use it when referring to an instrument or method that helps keep something in a desired state or condition.
Example: "The software serves as a tool to maintain the efficiency of our operations."
Alternatives: "a means to preserve" or "an instrument for sustaining".
"We aren't saying: 'End corruption and clean up politics.' We know corruption is a tool to maintain power".
Even the people who are trying to use it as a tool to maintain power or stability know that this is a completely fake condition".
But like all those efforts, the administration's decision to effectively turn the census into a tool to maintain Republican power has to be clothed in some kind of reasonable-sounding justification.
The use of lactic acid bacteria (LAB) has been identified as a tool to maintain the intestinal microbial balance and to prevent the establishment of opportunistic pathogenic bacterial populations.
Failing to do so only endorses China's efforts to impose its narrative on the rest of the world – a discourse that is anti-democratic, in which the law is viewed as a tool to maintain power and not to achieve justice, and one that is hostile to any views that do not accord with the official party line.
The emphasis on numbers of contacts, cost per contact, amount of literature distributed, and sales suggests that a majority of managers view shows as an almost straight-line extension of personal selling, done in mass fashion, rather than as a tool to maintain relationships with key customers or to satisfy other needs like competitive intelligence-gathering.
Our improved understanding of violence, of which Pinker's book is an example, can be a valuable tool to maintain peace and reduce crime, but other factors are in play.
A Stress Reaction can be a useful tool to maintain your focus and preserve your ability to move through times of uncertainty.
In this study, blood flow occlusion was used as means to understand the mechanistic effect of circulating blood flow on post-warm-up Tmvl decline, rather than a proposed tool to maintain Tmvl during a period of inactivity.
"Because meditation generates a global mindfulness in all areas of life, it becomes a critical tool to maintain the health, wellbeing, and vitality of a relationship.
A 0.5 McFarland was used as a standard tool to maintain the perfect turbidity.
