design , manufacturing , sitc of single acting brake-jack cylinders alongwith control panel for tg units and removal of existing double acting cylinders alongwith control panel with buy back of existing double acting brake-jack assembly and control panel , supply of single acting brake and jack cylinders ( details specification as per annexure-f ) with limit switch as mentioned in scope of work annexure-i , of section-iv . , supply of brake & jack panel complete as per attached hydraulic / pneumatic diagram annexure-a , specifications annexure-b , dimensional details annexure-c and electrical circuit diagram annexure-d of section-iv . , dismantling/ removal of existing double acting cylinders ( 112 nos . ) along with control panel ( 07 nos . ) of seven nos . tg units and installation , testing and commissioning of new single acting cylinders along with control panel in seven nos . tg units . , mandatory spare parts as per annexure - h of section-iv . , less buy back of existing double acting cylinders . , less buy back of existing brake and jack panels