Monarch Rebuilding Inc., your Automotive Rebuilder and Equipment Repair Specialists. Located in London, Ontario, Canada serving Southwestern Ontario for over 40 years! Our customers represent many different market segments including; automotive, commercial, construction, food and beverage, industrial, manufacturing, mining, original equipment manufacturers and transportation. Monarch Rebuilding Inc. has been in business since 1961. Our business began predominantly as jack repair specialists and lubrication equipment repairs. We then grew to power brake boosters and waterpump rebuilding.