Service Manual MPE 750 Turbo Marine Closed Loop MPE 750 Turbo Marine - Closed Loop This service manual is valid for the following engine variants: • 103730_I2 749 MAR TC-143 DS V1 2007 3.1 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop Table of contents 1 About this document 1 1.1 Meaning of the symbols in the text 1 2 Safety 2 2.1 2.2 2.3 Basic principle Meaning of the safety symbols General safety instructions 2 2 3 3 Description 4 3.1 3.2 3.3 3.4 3.5 Technical specifications Serial number Operating materials Running in the engine Operating the engine without sea water 4 4 5 7 7 4 Maintenance 8 4.1 4.2 4.3 4.4 4.5 4.6 4.
Service Manual MPE 750 Turbo Marine Closed Loop 1 About this document This chapter will familiarize you with the structure of this document so that you can find the information it contains quickly and easily. This document uses symbols and signs that allow you to find information quickly. Please read the explanations of the symbols and signs in this chapter. Be sure to read all safety instructions in this service manually especially carefully.
Service Manual MPE 750 Turbo Marine Closed Loop 2 Safety 2.1 Basic principle This engine is state-of-the-art and built according to recognized safety-technical regulations. Nevertheless, people can be injured or the engine damaged if the safety instructions in this manual are disregarded. Only put the engine into operation if it is technically perfect. Faults that compromise the safety of people or of the engine must be eliminated immediately by trained service personnel.
Service Manual MPE 750 Turbo Marine Closed Loop 2.3 General safety instructions ATTENTION The engine may only be operated at idle speed for a maximum of 30 seconds without sea water. Engine damage due to overheating. See Chapter Operating the engine without sea water. ATTENTION Lift a submerged engine out of the water as quickly as possible and take it to a professional shop for maintenance within 24 hours. Belated measures can cause severe damage to the engine. 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop 3 Description The MPE 750 Turbo Marine - Closed Loop is a 2-cylinder in-line engine. It is intended for recreational watercraft. It is not designed for constant loads at high speeds as can occur during races, for example. 3.1 Technical specifications Type 2-cylinder parallel twin with vibration compensation shaft Displacement 749 cm³ Engine power 105 kW (143 PS) [141 HP] ISO 8178 7500 U/min [RPM] USA: See chapter Exhaust type authorizations Max.
Service Manual MPE 750 Turbo Marine Closed Loop 3.3 Operating materials ATTENTION The use of other operating materials causes damage to the engine and the voiding of the warranty. Fuel Fuel quality Unleaded gasoline according to DIN 51607 („super unleaded“), with an octane rating of at least 95 ROZ [RON] or 85 MOZ [MON]. ATTENTION Lower-quality fuels should only be used in case of emergency. If used regularly, they cause decreases in performance and possibly damage to the engine.
Service Manual MPE 750 Turbo Marine Closed Loop Coolant Coolant additive Coolant additive based on ethylene glycol Silicate- and nitrite-free. Suitable for aluminium engines. Anti-freeze mixture 50 % water + 50 % coolant additive Manufacturer’s fill provides frost protection up to -37 °C [-34.6 °F] Recommended minimum frost protection up to -30 °C [-22 °F] Fill quantity 3,3 liters [3.
Service Manual MPE 750 Turbo Marine Closed Loop 3.4 Running in the engine Weber Automotive GmbH recommends that during the first five hours of operation, you should not operate the engine over 6,000 U/min [RPM]. This protective running-in has a positive effect on the engine‘s lifespan. 3.5 Operating the engine without sea water If it is necessary to operate the engine longer than 30 seconds without sea water, the vehicle‘s rinsing equipment must be used.
Service Manual MPE 750 Turbo Marine Closed Loop 4 Maintenance The table in chapter Maintenance intervals provides the manufacturer’s recommended intervals for maintenance work. If you follow the maintenance recommendations, a long lifespan of the engine can be achieved and unnecessary environmental damage prevented. The Maintenance intervals specified in the table should not be exceeded by more than 10%.
Service Manual MPE 750 Turbo Marine Closed Loop 4.1 Maintenance work by the user of the vehicle Regular checks before driving Always check the oil level and coolant level before driving. See Chapter Oil level check. See Chapter Coolant level check. ATTENTION Underrunning and exceeding the motor oil and coolant fill levels specified in this manual can cause damage to the engine.
Service Manual MPE 750 Turbo Marine Closed Loop 4.2 Maintenance intervals every 50 ■ 2) after 25 Motor oil and oil filter Change 14 ■ 2) Coolant Change 20 Check / clean 23 Change 23 Check / set 26 Activity see page Maintenance interval h 1) Procedure 1st maintenance h 1) every 100 At end of season 5) Activities on the engine must be carried out by trained service personnel.
Service Manual MPE 750 Turbo Marine Closed Loop 4.3 Decommissioning at the end of the season The decommissioning of the vehicle is necessary ... ... at the end of the season if the vehicle will be decommissioned during the winter months. ... if the vehicle will not be used for more than 30 days. In addition to the maintenance work described in the maintenance interval table under end of the season, various other service work is also required. - Conserve the cylinders Check spark plugs.
Service Manual MPE 750 Turbo Marine Closed Loop 4.4 Motor oil and oil filter Oil level check - Use a clean, lint-free cloth The oil level must be measured with oil warm from operation (approx. 80 °C [176 °F]) and with the motor at a standstill. Measurements with cold oil are not meaningful. The desired motor temperature is achieved after a driving time of approx. 10 minutes at 4000 - 4500 U/min [RPM].
Service Manual MPE 750 Turbo Marine Closed Loop Oil level check (continuation) 2) Unscrew the oil dipstick (1) from the oil tank and wipe it clean with a cloth. 1 Replace the oil dipstick in the oil tank. Do not screw it in. Then remove it again and read the oil level. With a motor warm from operation, the oil level must be just below the MAX marking. 0.5 liter [0.53 qt (US)] 1) The difference between MIN and MAX is approx. 0.5 liter [0.53 qt (US)].
Service Manual MPE 750 Turbo Marine Closed Loop Changing the motor oil and oil filter - Oil extraction pump - Catch basin for old oil, fill volume at least 4 liters [4.
Service Manual MPE 750 Turbo Marine Closed Loop Draining the motor oil (continuation) The motor oil in the dry sump tank is pumped out with the help of the engine dry sump pump. 5) Remove the cable harness from the spark plugs and the injection valves. See Chapter Removing the spark plugs. 6) Remove the oil feed hose (2) on one side of the oil tank. If necessary, extend the oil feed hose. 2 Tightening torque: 3 Nm ± 10 % [2.2 ft. lb.
Service Manual MPE 750 Turbo Marine Closed Loop Changing the oil filter 9) Remove the screw clamp and sea water hose (3). Tightening torque: 3 Nm ± 10 % [2.2 ft. lb.] 3 10) Unplug the 70/65°C (4). 11) Unscrew the oil filter cover (5). plug from switch Tightening torque: 24 Nm ± 10 % [17.7 ft. lb.] 4 5 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop Changing the oil filter (continuation) 12) Replace the oil filter (6) and O-ring (7). 13) Coat the O-ring (7) lightly with motor oil. 7 During reassembly, make sure that the oil filter snaps in. 6 Assembly occurs in reverse order. Please note instructions after this symbol 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop Refilling the motor oil 14) Fill oil tank with 2.5 liters of motor oil. 15) Close the oil tank with the oil dipstick. 16) Warm up the motor in a body of water for approx. 10 minutes at 4000 - 4500 U/min. 17) Fill up the oil level with a motor warm from operation until just below the MAX marking. 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop 4.5 Engine cooling circuit Coolant level check - Check the coolant level with a cold engine. With a cold engine, the coolant level should be between the MIN and MAX markings (1) of the compensation tank. - If you must refill the coolant, see Chapter Refilling the coolant. 1 Underrunning the MIN marking can cause damage to the engine due to overheating. ATTENTION Exceeding the MAX marking should be avoided to prevent environmental damage.
Service Manual MPE 750 Turbo Marine Closed Loop Changing the coolant - Catch basin for the coolant, fill volume at least 4 liters [4.3 qt (US)] - Torque wrench SW19 [47/64 “] (screw) - Flathead screwdriver or wrench to open the screw clamps - Torque wrench to close the screw clamps - Funnel tube for coolant - Coolant, see chapter Operating materials - 2x gasket 14x18x1.5 Al, see spare parts catalogue Draining the coolant 1) Open the cover of the compensation tank (1).
Service Manual MPE 750 Turbo Marine Closed Loop Draining the coolant (continuation) 2) Loosen the screw and gaskets (2). Both gaskets must be replaced. Tightening torque: 2 40 Nm ± 10 % [29.5 ft. lb.] 3) Remove the screw clamps, hoses (3) on both sides and drain coolant. Tightening torque: 3 Nm ± 10 % [2.2 ft. lb.] Tighten the screw clamps after one to three hours. 3 Assembly occurs in reverse order. Please note instructions after this symbol 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop Refilling the coolant 4) Open the cover of the compensation tank. See Chapter Draining the coolant. 5) Add new coolant up to the MAX marking of the compensation tank. See Chapter Coolant level check. 6) Close the cover of the compensation tank. 7) Start the engine briefly and fill the compensation tank up to the MAX marking. See Chapter Operating the engine without sea water. 8) The vehicle can now be put into operation as usual.
Service Manual MPE 750 Turbo Marine Closed Loop 4.6 Spark plugs Checking the spark plugs - Socket wrench SW16 [5/8 “] - Feeler gauge, measurement range 0.69 mm - 0.84 mm [0.0272 - 0.0331 in.] - Torque wrench - 2x spark plugs, see spare parts catalogue Removing the spark plugs 1) Remove cable harness on the ignition coils (1). 2) Loosen the cable harness on the cable holders (2). 3) Remove the cable harness on the injection valves (3).
Service Manual MPE 750 Turbo Marine Closed Loop Removing the spark plugs (continuation) 4) Remove the screws and washers (4). 5) Remove the ignition coils (5) Install the spark plugs only in a cold engine. Grease the threads of the spark plugs with commercial graphite grease. Tightening torque: 4 5 10 Nm ± 10 % [7.4 ft. lb.] 6) Unscrew the spark plugs (6). 6 Tightening torque: 27 Nm ± 20 % [19.9 ft. lb.] Assembly occurs in reverse order.
Service Manual MPE 750 Turbo Marine Closed Loop Checking the spark plugs 7) Check the electrode distance of the spark plugs with the help of the feeler gauge. 0,69 - 0,84 mm [0.0272 - 0.0331 in.] 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop 4.7 Valve play Checking and setting the valve play - Hex wrench SW5 [3/16 “] - Feeler gauge, measurement range 0.08 mm - 0.25 mm [0.0031 - 0.0098 in.] - Valve adjustment tool, see spare parts catalogue - Combination wrench 24mm [15/16 “] - Bar magnet - Measurement tool for adjustment plate, reading 0.01mm [0.0003 in.] - Adjustment plates from 2.5 - 3.7 mm [0.0984 - 0.1457 in.
Service Manual MPE 750 Turbo Marine Closed Loop Removing the valve cover (continuation) 3) Unscrew the valve cover (2) along with bracket and valve (3). Tightening torque: 3 10 Nm ± 10 % [7.4 ft. lb.] 2 8 The sequence of the connection occurs according figure. 1 3 5 10 9 6 Replace the valve cover seals (4). Clean seal areas of the valve cover and cylinder head. 4 2 7 4 4 Assembly occurs in reverse order. Please note instructions after this symbol 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop Desmontarthe Checking la valve tapa de play válvula of the first cylinder 4) Start the vehicle’s starter and let the engine crank until both cams of the second cylinder are pointing upwards. Exhaust side The rocker of the first cylinder demonstrates a little play. 2nd cylinder Drive side 1st cylinder 5 Intake side 5) Using a feeler gauge, measure the valve play (6) of all four valves of the first cylinder between the adjustment plates and the rockers.
Service Manual MPE 750 Turbo Marine Closed Loop Adjusting the valve play 6) To adjust the valve play on the intake side, it is necessary to remove the fuel distributor rail. Remove the cable harness on the coolant sensor (7). 7 7) Loosen the screws and washers (8) and remove the fuel distributor rail (9). 8 Tightening torque: 10 Nm ± 10 % [7.4 ft. lb.] 9 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop Adjusting the valve play (continuation) Replace the O-rings (9) on the injector valves. Coat the O-rings lightly with motor oil. 9 8) Mount the valve adjustment tool (11) with two screws. Tightening torque: 10 Nm ± 10 % [7.4 ft. lb.] 11 The engine may not be turned over until all valve plays of the first cylinder are adjusted. ATTENTION 103730_SHB_Rev1.
Service Manual MPE 750 Turbo Marine Closed Loop Adjusting the valve play (continuation) 9) Press the rocker downwards with a 24 combination wrench (12). 10) Clamp both valves by pressing in the sliding piece (13). 11) Remove the adjustment plate with the bar magnet. 12) Measure the strength of the adjustment plate and replace with an adjustment plate with which the permissible tolerance is adhered to. 13) Replace the adjustment plate in the spring seat.
Service Manual MPE 750 Turbo Marine Closed Loop 5 Malfunctions If you cannot correct a malfunction yourself using the table below, contact your vehicle dealer‘s customer service. In case of improperly-made repairs, the warranty is voided and Weber Automotive GmbH is not liable for any resulting subsequent damage. Engine does not crank Possible cause Remedy Main power switch not plugged in. Plug in main power switch. Battery voltage too low. - Open-circuit voltage < 12 volts.
Service Manual MPE 750 Turbo Marine Closed Loop Engine cranks but does not start Possible cause Remedy Lanyard not plugged in. Plug in lanyard. Defective fuse. Check the fuses in the cable harness. Too little or no fuel in the tank. Fill up fuel. Check the engine for signs of leaky fuel lines and, if necessary, have it checked by a professional shop. Cable harness plug connections not plugged in or not plugged in correctly. Check plug connections. Spark plugs defective.
Service Manual MPE 750 Turbo Marine Closed Loop Engine stalls and cannot be started again Possible cause Remedy Lanyard not plugged in. Plug in lanyard. Defective fuse. Check the fuses in the cable harness. Too little or no fuel in the tank. Fill up fuel. Check the engine for signs of leaky fuel lines and, if necessary, have it checked by a professional shop. Cable harness plug connections not plugged in or not plugged in correctly. Check plug connections. Spark plugs defective.
Service Manual MPE 750 Turbo Marine Closed Loop 6 Terminology A S Adjusting the valve play 29 Serial number 4 Submerged engine 3 C Changing the coolant 20 Changing the oil filter 16 Checking the spark plugs 25 Checking the valve play 28 Coolant 6 Coolant level check 19 T Technical specifications 4 D Decommissioning at the end of the season 11 Draining the coolant 20 Draining the motor oil 14 F Flush sea water cooling circuit after driving 9 Fuel 5 L Lubricant 5 M Maintenance intervals 10 Maintenance
Service Manual MPE 750 Turbo Marine Closed Loop 7 Appendix Manufacturer Weber Automotive GmbH Address Otto-Lilienthal-Str.5 88677 Markdorf Germany Internet www.weber-automotive.com Engine MPE 750 HO Engine family WEBM.750TG (EU family designation) 8WEBM.7508TG (USA family designation, adjusted to the model year annually) 7.
Service Manual MPE 750 Turbo Marine Closed Loop 7.2 Exhaust type authorizations Type test center Europe Germanischer Lloyd Type test center USA CARB (California Air Resources Board) EPA (United States Environmental Protection Agency) For the emissions regulations in the USA, the motor can fulfill the emissions values in the abovementioned guidelines with a new programmed motor controller. The output of the motor is then 98 kW. All originals are present and can be viewed at any time.
Service Manual MPE 750 Turbo Marine Closed Loop 8 Proof of maintenance for work carried out Motor - serial number (8-digit) Date: Status Hours of operation: Company seal, signature Date: Status Hours of operation: Company seal, signature Date: Status Hours of operation: Company seal, signature _ _ _ _ _ _ _ _ _ _ Date of initial registration _________________ Work carried out: Motor oil change Oil filter change Spark plug change Valve play checked Valve play adjusted Coolant change Da
Service Manual MPE 750 Turbo Marine Closed Loop Date: Status Hours of operation: Company seal, signature Date: Status Hours of operation: Company seal, signature Date: Status Hours of operation: Company seal, signature Date: Status Hours of operation: Company seal, signature Work carried out: Motor oil change Oil filter change Spark plug change Valve play checked Valve play adjusted Coolant change Date: Status Hours of operation: Work carried out: Motor oil change Oil filter change
