Project: A major ship manager company contacted Varna Maritime Ltd to initiate a metalock repair process on a damaged Cylinder Casing of a marine main engine – WEICHAI CW 625ZIC-1. The following series of pictures describes the repair process performed in 2014 on company premises in Varna Bulgaria.
 1 – The Damaged Cylinder Casing before the repair.  5 – A view from inside-out on the prepared area with the installed insert. |  2 – Damage on Cylinder No.3  3 – New Cast Iron Insert.  4 – The finished insert after milling. |
 6 – Drilling of holes for insertion of the Metalock Keys.  7 – Caulking of the already inserted Metalock Keys along with the studs. |  8 – The repaired area is ground flush in line with the parent casting. |
 9 – Damaged Fin in the area of Cylinder No.3.  12 – Fitting the insert to the damaged area, and securing with studs. |  10 – Parent casting dressed to form an even aperture.  13 - Caulking the Metalock Keys and studs. |  11 – Preparation of a cast iron insert by milling.  14– The completed area is ground flush to the parent casting. |
