Repairs and Maintenance Having the expertise and approval as an OEM fabrication facility, Efficient Engineering is well-positioned to carry our Repairs, Refurbishments and Maintenance on a wide range of products in all the market sectors we operate in. Repairs and Maintenance Face Shovels Truck Bodies Fabricated Gearboxes Backhoe Buckets Bucket Wheels Water Tankers Dragline Equipment Tube Bundles Presure Vessels