How to renew SSL Certificate in SM 9.34 with Tomcat 7.0/Apache Web Tier?

Hello,  I must renew the SSL Certificate in SM 9.34 with Tomcat 7.0/Apache web tier.

I already have the new certificate, it's a .pfx file signed by IT security department of my company

The web tier for this SM 9.34 architecture has 3 Tomcat servers

I don't know how to install or replace the SSL Certificate that will expire soon and, when replaced, how to verify it's working right.

Thanks in advance,