Modifying timeout probably isn't the right way to handle this. instead, you want to modify acceptTimeout. The following Knowledge Base Article outlines how to use that setting. The article talks about Remote Cache, but the setting applies to any product that is trying to get a response back from Content Server and is timing out:
https://knowledge.opentext.com/knowledge/cs.dll/kcs/kbarticle/view/KB441138
Chris Wagg