Google crwaling

I submitted my website to Google search engines to crawl and index my webpages. When Google update Index status of my site also it should updated cached date. But for my site Google updated my indexed status not cached date. I want Google search engine to be updated site cached date.Your suggestion plz?

Do off page activities only.

The On page methods are more effective for getting the Google crawling easily.This is my practical experience.So, you can try this.

First you do on page then off page.
Both are important for you site.

Googlebot is Google’s web crawling robot, which finds and retrieves pages on the web and hands them off to the Google indexer. Google doesn't accept payment to crawl a site more frequently, and we keep the search side of our business separate from our revenue-generating AdWords service...As Googlebot visits each of these websites it detects links on each page and adds them to its list of pages to crawl.

first you do work on Onpage SEO after that Off page SEO and create quality backlinks.

First On do on page then do off page both are important for your site.