SAFARI

ENGINE 61 Fig 1 Fig 1A HP PIPES l High Pressure Lines: -Pipe routing changed with different material specification to suit new FIE and to suit high pressure application. l 4 Nos. (Rail to Injectors) and 1 (Pump to Rail). l Leak-off lines (Over flow lines): -Flexible Leak-off lines on Injectors and HP pump. Technical Description l Pump to rail: - length 364 mm l ID 3 mm, OD 8 mm l Rail to Injectors: - 4 Nos. Length 246mm each. l ID 2.4 mm, OD 6mm. l Material: - Steel with Zinc Plating, Pressure range: - 0 to 1600 bar. l Cleanliness: - class1 l Clean the HP connector nuts with solvent applied using a clean brush. l Remove particles with a vacuum cleaner. HP pipes removal procedure (Rail to Injectors) 1. Unscrew the cap nuts with a suitable 17 mm spanner of the HP pipes first from the rail and then from the Injectors. NOTE : Apply the torque to the upper half of the nut in order to avoid damaging it. (Fig: - 1 and Fig: - 1A) 2. Plug the respective ports on the rail and injectors depending on which HP pipes are removed. This is to avoid dust entry. (Fig: 2) 3. DISCONNECTING THE PIPE FROM THE RAIL. Keep the pipe nipple in contact with the rail cone with one hand and completely unscrew the nut with the other. While maintaining the pipe nipple in contact with the rail cone, vacuum any contaminants from between the pipe and the rail cone. 4. DISCONNECTING THE PIPE FROM THE INJECTOR. Keep the pipe nipple in contact with the injector cone with one hand and completely unscrew the nut with the other. While maintaining the nipple in contact with the injector cone, vacuum any contaminants from between the pipe and the injector cone. (Fig: - 3) High pressure pipes