Run dry the exhaust gas turbocharger at constant load for approx. Close the stop valve (5), valve (2) and the valve (9) of the drain. 3 minutes so that the injected water can evaporate. Open valve (2) and adjust the water pressure (see table). Open the valve (9) of the drain (8) (if present). 15 % of its rating until the temperature after cylinder has come down to its specified value. Connect the flexible tube (4) to fresh-water piping (3). Legend (Example, could vary depending on engine installation) 1 Sanitary fresh water 6 Wash-water piping 10 Escape funnel or sight glass 2 Regulating valve 7 Injector 3 Fresh-water piping 8 Connection for drain 2100 Turbine inlet housing 4 Removable flexible tube 9 Valve 11 Turbine outlet housing 5 Stop valve S_ en.doc 1 st Edition (12/03) of 2ĥ Service Information Exhaust Turbocharger Part S S45(12/2003) Work sequence: 1. Read and take down the charge air pressure and exhaust gas temperatures at a reference point (at 75 % or 100 % of the output) before and after washing to check the washing effect. The increase of charge air pressure could be used for adjusting the washing interval, which could adjusted within 50 to 600 hours. The washing interval could be adjusted from 50 to 600 hours. That's why they must be adjusted based on the experience gained during engine operation if necessary later on. The washing intervals depend on the fuel quality and operating conditions.
Due to these deposits the charge air pressure will be increased. of 2 1 st Edition (12/03) S_ en.docĤ Part S S45(12/2003) Service Information Exhaust Turbocharger Turbine cleaning Valid for TC type: R3-2, R4-2, R4-3 and R5-3 Valid for engines: M20 and M25 from CAT / MaK Cleaning of turbine Heavy fuel oil operation results in contamination and deposits on nozzle ring and turbine wheel reducing the efficiency. After exceeding the lifetime the nozzle ring should be replaced in case of fundamental change of performance data as charge air pressure and exhaust temperature. The lifetime of the nozzle ring is approximately 12,000 hours, but it depends on HFO quality and operating conditions.
40,000 The nozzle ring is subject to an increased wear for heavy fuel oil operation. Inspection III as inspection II replacement of rotor max. 20,000 as inspection I replacement of bearings 8. 10,000 disassembly cleaning checking rotor and bearings checking housings assembly 7. Check fastening bolts at the feet, tighten all housing bolts and piping joints once after commissioning, then every 1,000 hours 6. Turbine washing during operation, actuate turbine washing system Cleaning with water approx. Check for abnormal noise Compressor washing during operation, actuate compressor washing system 3. Item Maintenance work Maintenance interval (operating hours) 1. 40,000 S_ en.doc 1 st Edition (12/03) of 2ģ Service Information Exhaust gas turbocharger Part S S44(12/2003) Maintenance for Heavy Fuel Oil (HFO) application The operating hours given in the table below are guidelines which can be reduced for adjustment to the maintenance intervals of the engine. Inspection III like inspection I replacement of the bearings like inspection II replacement of the rotor or on demand once after commissioning, then every 1,000 hours max. Inspection I disassembly cleaning checking of rotor and bearings checking of housings assembly 6. Check for abnormal noise Compressor washing during operation, actuate compressor washing system Clean air filter at silencer approx Check fastening bolts at the feet, tighten all housing bolts and piping joints 5.
KBB Service Information S44 Maintenance interval for MDO / HFO Valid for TC type: R2-2 to R4-2, R4-3, R KBB Service Information S45 Turbine cleaning Valid for TC type: R3-2, R4-2, R4-3 and R5-3 Caterpillar Marine Power Systems, Kiel, Germany Phone: +49 (0) Fax: +49 (0)Ģ Part S S44(12/2003) Service Information Exhaust gas turbocharger Maintenance interval for MDO/ HFO Valid for TC type: R2-2 to R4-2, R4-3, R5-3 Valid for engines: All 1.1 Maintenance interval Maintenance for Marine Diesel Oil (MDO) application The operating hours given in the table below are guidelines which can be reduced for adjustment to the maintenance intervals of the engine. 08 / 04 Date: 2 KBB Turbocharger KBB Service Information S44 and S45 M20 / M25 1.
0 kommentar(er)
