bids are invited for repair and refurbishment of air primer (qty-02)-1 dismantling of air bottles and other accessories (gauges, reducers, pressure relief valve and pneumatic lines etc.) 2 structural repair of roof top and primer body (welding, material build up etc.) 3 replacement of teflon packing and seals 4 repair of parking brake system 5 removal of old painting 6 painting of air bottles and primer body inside and outside 7 assembling of air bottles and other accessories (gauges, reducers, pressure relief valve and pneumatic lines etc.) 8 leak check of all pneumatic lines (inlet and outlet) 9 pressure testing of all reducer and pressure relief valve (prv)