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| 1 | Hydraulic PumpPVPC-L-5073/ID.(a) Dismantle, inspect and overhaul/ refit pumps. Renew bearings, seals and worn/ damaged parts.(b) Prove pump performance and characteristics and effect necessary tuning of internal valves. | Hydraulic PumpPVPC-L-5073/ID.(a) Dismantle, inspect and overhaul/ refit pumps. Renew bearings, seals and worn/ damaged parts.(b) Prove pump performance and characteristics and effect necessary tuning of internal valves. |
| 2 | Emergency Pumps Motor driven - 2Generator driven -2.Degutting/ regutting/ overhaul the pumps. Renew if any parts worn out/ damaged. | Emergency Pumps Motor driven - 2Generator driven -2.Degutting/ regutting/ overhaul the pumps. Renew if any parts worn out/ damaged. |
| 3 | Hydraulic Motor with Winch Gear box.Dismantle, inspect and overhaul/ refit hydraulic motors and reduction gear box. Renew bearings, seals and worn out/ damaged. | Hydraulic Motor with Winch Gear box.Dismantle, inspect and overhaul/ refit hydraulic motors and reduction gear box. Renew bearings, seals and worn out/ damaged. |
| 4 | Hydraulic Valves.Overhaul / replace all hydraulic valves, renew seals and worn parts. Replace all corroded cartridge type valves. The hydraulic valves within the power unit assembly are as follows: (i) Relief valve, (ii) Shuttle valve, (iii) Cock valve, (iv) Counter balance valve, (v) Check / non return valve, (vi) Sequence valve, (vii) Solenoid valve (double)/ 4/3 DC valve, (viii) Solenoid valve (single)/ 4/2 DC valve, (ix) Proportional valve, (x) Emergency operation DC valve, (xi) Suction valve | Hydraulic Valves.Overhaul / replace all hydraulic valves, renew seals and worn parts. Replace all corroded cartridge type valves. The hydraulic valves within the power unit assembly are as follows: (i) Relief valve, (ii) Shuttle valve, (iii) Cock valve, (iv) Counter balance valve, (v) Check / non return valve, (vi) Sequence valve, (vii) Solenoid valve (double)/ 4/3 DC valve, (viii) Solenoid valve (single)/ 4/2 DC valve, (ix) Proportional valve, (x) Emergency operation DC valve, (xi) Suction valve |
| 5 | Hydraulic system.Pipe lines (3/8'',1/2'' dia) to be renewed with SS material. Carryout pressure testing of hydraulic system piping to 1.5 times the working pressure and renew pipe lines / end fittings as required to ensure zero leakage. | Hydraulic system.Pipe lines (3/8'',1/2'' dia) to be renewed with SS material. Carryout pressure testing of hydraulic system piping to 1.5 times the working pressure and renew pipe lines / end fittings as required to ensure zero leakage. |
| 6 | Hydraulic Hoses.Renew all hydraulic hoses | Hydraulic Hoses.Renew all hydraulic hoses |
| 7 | Hydraulic Tank.Carry out cleaning of reservoir and renew gaskets/ joints/ fittings as necessary. Repair of tank to be carried out and pressure test the tank to ensure zero leakages | Hydraulic Tank.Carry out cleaning of reservoir and renew gaskets/ joints/ fittings as necessary. Repair of tank to be carried out and pressure test the tank to ensure zero leakages |
| 8 | Accumulators.(a) Strip / examine / refit accumulator(b) Check/ replace the accumulator's bladder(c) Test the accumulator with Nitrogen gas of 1.5 times working pressure | Accumulators.(a) Strip / examine / refit accumulator(b) Check/ replace the accumulator's bladder(c) Test the accumulator with Nitrogen gas of 1.5 times working pressure |
| 9 | Hydraulic Cylinders.(a) Dismantle cylinder and piston rod. Check dents/ nicks/ corrosion.(b) Renew piston seals and cover seals(c) Pressure test the hydraulic cylinders 1.5 times of working pressure. | Hydraulic Cylinders.(a) Dismantle cylinder and piston rod. Check dents/ nicks/ corrosion.(b) Renew piston seals and cover seals(c) Pressure test the hydraulic cylinders 1.5 times of working pressure. |
| 10 | Mounts.Check and replace all the mounts | Mounts.Check and replace all the mounts |
| 11 | Trials and STW.Post integration and re-fitment onboard, trials and STW to be undertaken by the firm in harbour to satisfactory performance iaw Naval requirements/ Naval Testing Agencies. Identification Labels mounted on the equipment / system components are to be renewed as indicated | Trials and STW.Post integration and re-fitment onboard, trials and STW to be undertaken by the firm in harbour to satisfactory performance iaw Naval requirements/ Naval Testing Agencies. Identification Labels mounted on the equipment / system components are to be renewed as indicated |
