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Warnings and cautions in this manual are not complete because Shanghai Diesel Engine Co., Ltd. (SDEC) has no possibility and is not able to foresee all potential risks resulted from the failures to follow the safety cautions and operation instructions.
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Table of Contents Introduction...............................1 I To User and Operator ........................1 II Notices for Engine Quality Feedback .....................1 III Safety Instructions.........................1 IV Engine Operation Instructions.......................2 1 General..............................3 1.1 Engine Model Identification ......................3 1.2 Acronym and Abbreviation Definitions ..................3 1.3 Engine Nameplate........................4 1.4 Engine Outlines ...........................4 2 Main Engine Specifications and Parameters ..................6 2.1 Main Specifications........................6...
Introduction I To User and Operator Thank you for purchasing a product of Shanghai Diesel Engine Co., Ltd! The SC9D diesel engine is a new large power four-valve diesel engine developed by SDEC off-road application based on 9DF electronically controlled diesel engine. Featuring strong power, low fuel consumption, good reliability, easy maintenance and emissions conforming to national regulations, the SC9D diesel engine is a perfect power for construction machinery and land generation sets.
flush your eye(s) for 15 minutes with clean water and seek for medical treatment immediately. ●Cool the engine first to avoid being hurt by coolant steam when filling coolant. Open the pressure cap only when the coolant is lower than 50℃, and then slowly loosen the cap to release the pressure of the cooling system. ●Wipe up lubricating oil, fuel, coolant or other liquids overflowed.
1 General 1.1 Engine Model Identification The engine model denotes the following meanings: □ □ □ Emissions level: e.g. stands for China Stage II Application code: G-construction machinery, D-power generation Engine power /PS Engine series Engine displacement /L Shangchai Power Example: SC9D340D2 stands for Shangchai Power D series 9-liter four-valve diesel engine of 340 PS and compliant with China Stage II (off-road) for generator sets 1.2 Acronym and Abbreviation Definitions...
1.3 Engine Nameplate The engine nameplate indicates the main technical data and information: model, order number, serial number, date of production, rated power and rated speed, which are a major basis for you to purchase service parts and for SDEC to conduct after-sale technical service.
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Joint (M16×1.5) for coolant temp. sensor Coolant drain cock Coolant inlet Joint (M16×1.5) for oil temperature sensor Exhaust side view Oil filler 4×φ13 Exhaust outlet Top view...
2 Main Engine Specifications and Parameters 2.1 Main Specifications Four stroke, water-cooled, in-line, Type turbocharged and intercooled Number of cylinders Number of valves per cylinder Bore × stroke/mm 114×144 Displacement/L 8.82 Fuel injection equipment Mechanical fuel injection pump, with mechanical or electronic governor Compression ratio 17.3...
2.3 Other Technical Requirements 2.3.1 Fuel Warning: Gasoline or alcohol is not allowed to be used with diesel, as their mixture may cause detonation. The quality of diesel fuel used for this engine should be not less than the requirement of national standard GB 19147. Main fuel specifications specified in the standard are as follows.
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For most areas, CF-4 15W-40 oil is recommended. For those areas where the ambient temperature is below -15℃, CF-4 10W-30 is recommended in order to ensure easy start-up and sufficient oil provision. In the cold areas where the diesel engine keeps working below -23℃, and no warm-keeping measures can be taken when it stops, CF-4 5W-50 oil with good low-temperature characteristics shall be used.
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used. The content of DCA4 additive in coolant is specified as follows: 0.264 units DCA4 per liter of coolant; no more than 0.528 units per liter and no less than 0.132 units per liter. One unit DCA4 additive weights 22.68 g. For example, a coolant filter with 12 units of solid DCA4 additive is required for a cooling system of 30-liter coolant.
2.4 Main-Bolt and -Nut Tightening Torque and Methods Table 1 Torque specification for main fastening bolts Name Thread spec. Final torque Tightening method First: 50 N·m 125±5 N·m Main bearing cap bolts M16-4h6h Second: 120-130 N·m Final angle 210°±5° Third: angle 210°±5° First: 50N·m Cylinder head bolts 115±5 N·m...
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Table 2 Approximate tightening torque for common screw plugs and standard bolts Grade 10.9 Torque/ N·m Torque/ N·m Diameter of bolt/mm Cast iron Aluminum Cast iron Aluminum Note: the torque values given in the above table only applies to the threads of bolts and nuts that have been properly lubricated.
3 Operation of Engine Oil, fuel and coolant with suitable specifications shall be chosen according to specific application environment and conditions before running the diesel engine. The selected oil, fuel and coolant shall comply with technical specifications as given in the Article 2.3. Correct and reasonable application will enable the engine to have a longer service life, a better work performance and a high economical efficiency.
In the case of too high temperature of coolant, decrease engine speed or reduce load or take both until the temperature recovers to the range of normal working conditions, otherwise, find the cause and trouble shoot the problems as specified in Chapter V "Troubleshooting Guidelines". Most failures will develop with a symptom.
4 Maintenance of Engine 4.1 Maintenance Schedule It is recommended to maintain the SC9D diesel engine according to the "Repair and Maintenance Schedule". The maintenance interval shall be shortened appropriately when the engine is always operating in an area with ambient temperature lower than -18℃...
4.2 Daily Check and Maintenance Items Preventative maintenance work starts with understanding daily working conditions of the engine itself and its systems. Daily maintenance shall be made before starting the engine: Check oil level; Check coolant level; Check drive belt; Check cooling fan;...
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The coolant into the engine and additive concentration shall be subject to the standards as specified in Chapter 2. Anti-freeze Water Water coolant of water and ethylene glycol must be mixed in advance before being added into the engine. Adding ethylene glycol Ethylene glycol Ethylene glycol fluid directly into the engine will cause engine overheating...
4.2.5 Check primary fuel filter service indicator Service indicator The primary fuel filter has a service indicator. It turns red when the filter has i di i di 器放水 accumulated a certain amount of foreign particulates that will cause it difficulty for the fuel transfer pump to pump fuel.
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Check and clean the drain plug threads and sealing surface, and replace sealing ring. Install the drain plug. Tightening torque: 80 N·m 56 N·m (aluminum oil sump) Fill clean oil of the specifications specified in Chapter II into the engine to suitable oil level; the capacity of the lubricating system is about 30 L.
4.3.4 Check and maintain intercooler Visually check the air inlet/outlet chamber of the intercooler to see whether there are cracks, perforation or other defects. Check the intercooler pipes, cooling core and welding seams to see whether there are cracks, tip off or other defects. If oil or dirt is found in the intercooler due to turbocharger fault or other causes, remove and clean the intercooler.
Fill the new fuel filter with clean diesel and lubricate the rubber seal ring with clean oil. Install the fuel filter according to the instruction printed on the surface of the fuel filter. △Caution: Reliably tighten the fuel filter according to the instruction to avoid fuel leak, but do not over tighten it to avoid the fuel filter being damaged.
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4.5.1 Adjust valve clearance Remove cylinder head cover and components above it, before adjusting the valve clearance. Insert the barring tool into the flywheel housing barring hole and make it engage with flywheel gear ring. Rotate the crankshaft slowly to let the point indicator on the flywheel housing points at “0”...
Check and adjust the rest valves in the way specified in Step B. Recheck all the valve clearances after tightening the rocker arm locknuts. The clearance values shall not be changed. Locknut tightening torque: 45 N·m. Reinstall the cylinder head cover and other component. Step B 4.5.2 Check the belt tension Measure the deflection of the belt at its maximum span.
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4.6.1 Clean cooling system The cooling system must be cleaned periodically to ensure coolant cooling and anti-corrosion effect. If coolant is filtered and checked periodically, coolant must be replaced and the cooling Coolant Coolant temperature system must be cleaned every two years; otherwise, the temperature replacement cleaning...
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△Caution: Air must be discharged from the cooling system chamber when filling clean agent. First open the air bleeding valve (if applicable) in the intercooler, and slowly water fill the detergent to avoid air block. Wait for 2 to 3 minutes to allow air to be exhausted fully.
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Refill the coolant into cooling system. △Caution: It’s prohibited to use water without Water Water additives as coolant; otherwise, the engine will be seriously damaged due to rustiness. Ethylene Ethylene Refer to Section 2.4 for a correct mixture of water and glycol glycol ethylene glycol as anti-freeze coolant.
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4.6.3 Check air compressor The air compressor adopts a small amount of oil to lubricate its piston ring and moving parts. Cement or carbon deposit will be generated in the oil when the air compressor has been running under the normal working temperature for a certain time.
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Carefully check the unloading valve to see whether there is carbon deposit, and if so, remove and clean them. Check the compressor cylinder head inlet/outlet valve components, and replace relevant components if necessary. It is allowed to install a new O-ring on the unloading valve body and a new Y- ring into its bore if the unloading valve clean or there is light carbon deposit.
5 Troubleshooting Guidelines Only when correct operation and regular maintenance is done as required in this manual can failure(s) be eliminated effectively. Any abnormal condition during the engine operation shall deserve attention and be eliminated timely. Some typical engine failures, possible causes and acceptable solutions are listed in this manual. If a failure is unclear or not repairable, or problems not listed in this manual, please contact SDEC’s after-sale service center at spare@sdecie.com.
5.3 Engine power loss Possible Causes Correction The fuel supply is hindered Check the fuel inlet for resistance, clean primary fuel filter and strainer, and replace the fuel filter if necessary The fuel quality is poor Use the fuel specified in this manual and fill a temporary tank with right high-quality one, with which to run the engine and verify the fuel issue There is fuel leak at high-pressure fuel Check the joint(s) or high-pressure fuel pipe(s) for leakage, tighten and...
5.7 Oil pressure is too low Possible causes Correction The oil level is too low Adjust the oil level The oil is incorrect in specification, or its Check and replace with qualified oil viscosity is too low Oil pipeline joint is loose or oil duct Check the pipeline for oil leak plug(s) missing The oil is diluted by coolant...
5.11 Excessive noise Possible causes Correction Driving belt gives out howling Check the belt drive system There is leakage in the air intake and Check and remove the leakage exhaust systems The valve clearance(s) is excessive Check and adjust valve clearances The turbocharger is noisy Check whether the impeller(s) touches its housing Oil in the engine is insufficient...
6 Storage of Engine 6.1 Short Time Storage If the engine is to be out of service for a period of time (1 to 3 months), measures of cleaning and necessary oil seal should be taken for rust protection. 6.1.1 Before storage (1) Clean the engine surface and check for any dirt, or oil stain or water stain and rust.
Appendix Maintenance record Maintenance Record Diesel Engine Serial No. Diesel Engine Model User Name Equipment Name/Number Km (hrs) Date Actual Mileage Maintenance Content Maintainer Remark: Or Time Interval...
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