Safety Precautions and Instructions A generator set, like any other electromechanical device, can pose potential dangers to life and limb if CAUTION improperly maintained or imprudently operated. The best way to prevent accidents is to be aware of the Caution indicates the presence of a hazard that will or potential dangers and to always use good common can cause minor personal injury or property damage if sense.
Page 4
Accidental Starting Explosion can cause severe injury or death. Battery gases can cause an explosion. Do not smoke or permit flame or spark to occur near a battery at any time, WARNING particularly when it is being charged. Avoid contacting terminals with tools, etc., to prevent burns and sparks that could cause an explosion.
Page 5
Exhaust System Carbon monoxide can cause severe nausea, fainting, or death. Do not use copper tubing in diesel exhaust systems. Diesel fumes can rapidly destroy WARNING copper tubing in diesel exhaust systems. Exhaust sulfur causes rapid deterioration of copper tubing resulting in exhaust leakage.
Page 6
Fuel System Hazardous Noise CAUTION WARNING Hazardous noise. Explosive fuel vapors. Can cause loss of hearing. Can cause severe injury or death. Never operate generator set without a muffler or Use extreme care when handling, storing, with a faulty exhaust system. and using fuels.
Page 7
Hazardous voltage can cause severe injury or Hazardous backfeed voltage can cause severe death. Whenever electricity is present, there is the injury or death. Do not connect generator set to any hazard of electrocution. Open main circuit breaker on all building/campground electrical system...
Page 8
Hot Parts Moving Parts WARNING WARNING Hot coolant and steam. Hazardous voltage. Moving rotor. Can cause severe injury or death. Can cause severe injury or death. Before removing pressure cap, stop generator set Do not operate generator set without all guards and and allow it to cool.
Page 9
Notes NOTE Hardware Damage! Engine and generator set may NOTICE use both American Standard and metric hardware. Use the correct size tools to prevent rounding of bolt heads and nuts. This generator set has been rewired from its nameplate voltage to: NOTE When replacing hardware, do not substitute with inferior grade hardware.
Introduction All information in this publication represents data Equipment service requirements are minimal but are available at time of printing. Kohler Co. reserves the very important to safe and efficient operation; therefore, right to change this literature and the products inspect parts often and perform required services at the represented without incurring obligation.
Routine Service Parts Your Kohler generator dealer/distributor has a complete listing of parts for your generator set. Contact your dealer/distributor for service. Part Description Kohler Part No. Air Cleaner Element 258646 Oil Filter 322422 Metal-Type Fuel Filter 322536 Element Plastic-Type Fuel Filter...
Section 1. Specifications General Specifications 7 kW (60Hz) 10 kW (60Hz) Dimensions L x W x H in. (mm): Remote Radiator (Single Phase) ....30.49 x 18.43 x 25.09 .
Engine Some general engine specifications are listed below. Refer to the appropriate service section and the engine service manual for specific service details. 7 kW 10 kW Manufacturer ............Kubota Model .
Generator Models 7CCO/CCFO/CCOZ/CCFOZ Models 10CCO/CCFO/CCOZ/CCFOZ Model Voltage Amps/ Model Voltage Amps/ Series Code Voltage Wire Pole Series Code Voltage Wire Pole 60 Hz Models: 60 Hz Models: 7CCO 120/240 29.2 10CCO 120/240 41.7 10.0 7CCO 100/200 35.0 10CCO 100/200 50.0 10.0...
Section 2. Operation To ensure continued satisfactory operation, check the Coolant Level: If the cooling system is equipped with a following items before each startup. coolant recovery tank, check coolant level (and refill coolant as necessary) at tank. Maintain level according to markings on the tank.
Controller (Single Phase) Depending on application, the Kohler relay controller 4. Remote Switch Connection (located at rear of controller). Connect the remote start/stop switch to may be located at the set or at a location remote from the operate the generator set at a location remote from generator.
Starting Procedure Stopping Procedure The generator is equipped with a preheat feature. Place Allow a brief cooling period by running the set at low or controller start switch in Stop-Preheat position for the no load for a few minutes just prior to shutdown. To stop, amount of time shown in Figure 2-3 before attempting to move the switch to the Stop position and hold until the start the generator set.
Fault Shutdowns High Water Temperature Shutdown Switch Low Oil Pressure The generator set is also equipped with a high water Shutdown Switch temperature (HWT) shutdown switch. See Figure 2-5. The unit will automatically shut down when the engine The low oil pressure (LOP) shutdown feature protects coolant temperature exceeds 230_ F (110_ C).
If this fuse is replaced then blows then blows again, have the generator set examined again, have the generator set examined by an by an authorized Kohler service dealer/distributor. authorized Kohler service dealer/distributor. 4. Optional AC Circuit Breaker(s). Circuit breaker 2.
As part of a preventive maintenance Have items identified with asterisks (**) performed by an program, service the engine (clean cylinder head, authorized Kohler service dealer/distributor. Tools and inspect valves, check compression, etc.) and generator instruments required for these additional steps are not (replace bearing, inspect wiring, remove debris, etc.) at...
Page 27
......* Service more frequently if operated in dusty areas. ** Should be performed by an authorized Kohler Service Dealer/Distributor. 3-2 Scheduled Maintenance...
Lubrication System Your engine has a positive pressure lubrication system NOTE and low oil pressure shutdown. Failure to observe these standards may cause inadequate oil pressure and cold-starting difficulties. Oil Selection Oil Check The selection of engine oil is very important to a diesel engine.
Oil Change NOTE Too high an oil level causes high oil consumption and On a new engine, change the oil after the first 50 hours of carbonizing of the engine. Low oil level will cause operation and thereafter at 100-hour intervals or 3 engine damage.
Oil Filter 1. With oil system drained, loosen oil filter by turning with a filter wrench in a counterclockwise direction. Replace the oil filter for the first time after 50 hours or 1 Use rags to clean up spilled oil. Remove and discard.
Fuel System Specification Fuel Filter (Metal Spin-On Type) Use a clean, good quality No. 2-D (DIN 51 601) diesel fuel oil. The fuel must meet the requirements of the The fuel filter serves to remove water and dirt contained American Society of Testing and Materials (ASTM) in the fuel.
Fuel Filter WARNING (Plastic In-Line Type Supplied Loose) The fuel filter, supplied loose with the unit, serves as a preliminary source to remove dirt and metal particles from the fuel system before they reach the electric fuel pump. If the fuel filter is clogged with debris, the Explosive fuel vapors.
Air Cleaner Service 1. Loosen eyebolt and clamp enough to remove the air cleaner cover. 2. Remove wing nut and slide air cleaner element The paper element must be replaced at 400-hour or from the threaded rod. 6-month intervals; change more frequently if operating under dirty, dusty conditions.
Governor The centrifugal, mechanical-type governor serves to keep the engine speed constant by automatically adjusting the amount of fuel supplied to the engine according to changes in the load. No regular service is required on the unit. The governor is adjusted during run-in at the factory, and further adjustment is not needed unless greatly varying load conditions are encountered or if poor governor control develops after...
Cooling System manufacturer for remote radiator cooling system WARNING capacity. Drain petcocks are provided on the bottom tank of the radiator and another in the engine block to drain the system. When draining the coolant, remove the radiator cap and open the block drain located near the flywheel housing;...
Page 36
ADV-5831-A 1. Coolant Outlet 2. Coolant Inlet Figure 3-10. Coolant Fill and Coolant Drain Connections (Remote-Radiator Model) ADV-5831-C 1. Initial Coolant Fill 2. Coolant Drain Figure 3-11. Initial Coolant Fill and Coolant Drain Locations (Typical Inline-Radiator Model) TP-5594 5/95 Scheduled Maintenance 3-11...
Belt Tension WARNING Adjust the belt tension so that the belt can be depressed about 0.28 to 0.35 in (7 to 9 mm) with about 22 lbs. (10 kg) of force, see Figure 3-12. Hazardous voltage. Moving rotor. Can cause severe injury or death. Do not operate generator set without all guards and electrical enclosures in place.
Battery Use a 12-volt battery with a rating of at least 625 cold WARNING cranking amps/100 amp hour. When using a maintenance-free battery, it is not necessary to check the specific gravity or electrolyte level. Otherwise these procedures should be done at the intervals specified in the Maintenance Schedule.
Checking Electrolyte Level Correction ° ° 71.1 + .032 Check the level of electrolyte before each startup. + .030 Remove filler caps and check to see that electrolyte 65.6 + .028 EXAMPLE NO. 1 -- level is up to bottoms of filler holes. See Figure 3-14. Temperature below 80°...
Gauge Connections The 7 and 10 kW generator sets may be equipped with pressure and water temperature senders are shown in sending devices for connection to oil pressure and water Figure 3-16. temperature gauges (not provided). Locations of the oil See DETAIL A DETAIL A CV-250000-G...
Page 41
Since lead 10 (from water temperature sender) and lead temperature senders. The installer may also elect to run 11 (from oil pressure sender) may not appear at separate leads from each sender directly to the gauges controller plug J4 or P4, it may be necessary to add and bypass the harnesses entirely.
Wattage Requirements If the rated capacity of the generator is exceeded, the Motor circuit breaker(s) located in the controller will trip to Starting Running protect the generator against damage. This could be Construction Tools Watts Watts caused by a short in the AC circuit in the vehicle or Air Compressor (Small) 1500 simply by having too many appliances (or tools) turned...
Generator Service General dirty conditions, use dry compressed air to blow dust out of the generator at frequent intervals. Do this with the Under normal conditions, generator service will not be generator set operating and direct the stream of air in required on a regular basis.
Section 4. Troubleshooting When troubles occur, don’ t overlook simple causes. A procedures in this manual do not correct the problem, starting problem could be caused, for example, by take the generator set to a service dealer/distributor. improper fuel or an empty fuel tank. Make sure all Tell the service dealer/distributor personnel exactly electrical connections are secure.
Page 45
Engine (Continued) Problem Possible Cause Corrective Action Engine knocks Faulty injector See authorized service dealer/distributor Improper type of fuel Use proper type of fuel; consult fuel supplier Incorrect fuel injection timing See authorized service dealer/distributor Improper cylinder top clearance See authorized service dealer/distributor Defective piston or piston ring See authorized service dealer/distributor Defective crankshaft bearing or...
Page 46
Engine (Continued) Problem Possible Cause Corrective Action Lack of engine Clogged fuel filter Replace filter element power (Continued) Improper type of fuel Use proper fuel Improper valve clearance See authorized service dealer/distributor Dirty or faulty injectors See authorized service dealer/distributor Incorrect fuel injection timing See authorized service dealer/distributor Improper engine compression...
Page 47
Engine (Continued) Problem Possible Cause Corrective Action Engine emits Improper valve clearance See authorized service dealer/distributor black or gray exhaust smoke Lube oil level too high Drain out surplus (Continued) Improper lube oil Use proper viscosity oil Engine emits Excessive engine oil Reduce to specified level white or blue exhaust smoke...
Engine (Continued) Problem Possible Cause Corrective Action High fuel Incorrect fuel injection timing Check injection timing consumption (Continued) Low engine temperature Check thermostat Improper compression See authorized service dealer/distributor Fuel leakage Check for leaks at fuel tank, lines, and engine fuel system Electrical System Problem Possible Cause...
Generator Problem Possible Cause Corrective Action No AC output AC circuit breaker(s) in OFF Reset to ON position position No DC power to controller Check battery connections Fuse blown Replace fuse AC circuit breaker tripping due Reduce load (see Wattage to overload on generator set Requirements) Short circuit in vehicle circuit...
Section 5. Wiring Diagrams WARNING WARNING Accidental starting. Hazardous voltage. Moving rotor. Can cause severe injury or death. Can cause severe injury or death. Disconnect battery cables before working on Do not operate generator set without all guards and generator set (negative lead first and reconnect it electrical enclosures in place.
Page 51
A decal (part no. 246242) is Line Side available to indicate reconnected voltage from authorized Kohler dealers/distributors. Single-Pole Circuit 120/240-Volt (or 110/220-Volt, Breaker Load 100/200-Volt) Configurations— Figure 5-1...
Page 52
Twelve-Lead (Three-Phase) Generator Sets 12 LEAD STATOR 12 LEAD STATOR 60 Hz— 120/208 volt or 139/240 volt 60 Hz— 120/240 volt 3 PH. 4 WIRE DELTA 3 PH. 4 WIRE LOW WYE 50 Hz— 110/220 volt 3 PH. 4 WIRE DELTA 50 Hz—...
Page 53
225671-F Figure 5-4. Wiring Diagram (Schematic) for 7/10CCO-RV Single Phase. 5-4 Wiring Diagrams TP-5594 5/95...
Page 54
225671-F Figure 5-5. Wiring Diagram (Point-to-Point) for 7/10CCO-RV Single Phase. TP-5594 5/95 Wiring Diagrams 5-5...
Page 55
225651-J Figure 5-6. Wiring Diagram (Schematic) for 7/10CCOZ-Mobile Three Phase. 5-6 Wiring Diagrams TP-5594 5/95...
Page 56
225651-J Figure 5-7. Wiring Diagram (Point-to-Point) for 7/10CCOZ-Mobile Three Phase. TP-5594 5/95 Wiring Diagrams 5-7...
RV/Mobile generator set, the installation must comply alternating-current generator, and relay controller. The with the Kohler detailed installation instructions. Any generator is directly connected to the engine for additional requirements can also be found in the permanent alignment.
Generator Selection And Wattage Requirements Electrical Load Total wattage requirements (lights, motors, appliances) must be considered in selecting a generator set, or While the electrical load of the vehicle should have been sizing wattage requirements when available space and calculated prior to purchase of the generator set, you construction may limit the size of the generator set.
Appliance Loads Electrical Appliance Ratings (Watts) Generator sets in recreational vehicles are often used to Blanket 50-250 furnish AC for appliances such as TV, stereo, electric Blender water heaters, etc. With the exception of the Dryer, Hair 500-1200 resistance-type loads such as the water heater, Fan, Air Circulating 25-100 requirements for appliances are usually low.
Page 61
Consider thickness insulating sound-deadening material used to line the compartment when planning clearances. If necessary, enlarge the compartment to minimum clearance requirements. Securely fasten the generator set to avoid unwanted movement from vibration and road shock. If the unit is equipped with a mounting tray, the tray is usually supported on the ends by angle iron and has a full door for service access.
Air Requirements Each engine is equipped with a high water temperature shutdown switch which will automatically shut down the set if operating temperatures climb too high. To prevent the generator set from shutdown, make sure the compartment openings are large enough to allow adequate circulation of the cooling and combustion air.
Page 63
Generator Free-Air Opening: Radiator Free-Air Opening: 140 sq. in. (903 sq. cm) 7 kW— 281 sq. in. (1813 sq. cm) 10 kW— 306 sq. in. (1974 sq. cm) 7 kW: 16.5 in (419 mm) Seal End Bracket to 10 kW: 18 in. (457 mm) Compartment Wall or Duct 17 in.
Page 64
Generator Free-Air Opening: Radiator Free-Air Opening: 140 sq. in. (903 sq. cm) 7 kW— 307 sq. in. (1981 sq. cm) 10 kW— 307 sq. in. (1981 sq. cm) Seal End Bracket to 7 kW: 16.62 in. (422 mm) Compartment Wall or Duct 10 kW: 16.62 in.
Page 65
7 kW Inline-Radiator Model ADV-5831A-D 10 kW Inline-Radiator Model ADV-5832A-C Figure 6-11. Air Flow Requirements for Inline-Radiator Models (with Suction Fan) TP-5594 5/95 Installation 6-9...
Page 66
7 kW Inline-Radiator Model ADV-5963A-A 10 kW Inline-Radiator Model ADV-5968A-A Figure 6-12. Air Flow Requirements for Inline-Radiator Models (with Pusher Fan) 6-10 Installation TP-5594 5/95...
Page 67
NOTE: Dimensions in ( ) are millimeter equivalents. ADV-5963B-A Figure 6-13. 7CCO/CCOZ Inline Radiator (Pusher Fan) Single- and Three-Phase Models Optional Cooling without Cutouts in Compartment Floor TP-5594 5/95 Installation 6-11...
Page 68
NOTE: Dimensions in ( ) are millimeter equivalents. ADV-5968B-A Figure 6-14. 10CCO/CCOZ Inline Radiator (Pusher Fan) Single- and Three-Phase Models Optional Cooling without Cutouts in Compartment Floor 6-12 Installation TP-5594 5/95...
Remote Radiator Cooling System NOTE If installing a non-Kohler radiator assembly, be sure the Use the following data in designing and installing the radiator fan motor rotates in the correct direction and is generator set cooling system. To ensure a safe, of the proper voltage.
Page 70
TOP VIEW Maintain tight seal around radiator Discharge Chute through floor Inlet Air Flow Generator Cooled by Suction Fan Figure 6-15. Typical Cooling System Installation for Remote Radiator Mounted in the Generator Compartment 6-14 Installation TP-5594 5/95...
Page 71
Compartment Minimum Size in. (mm) 7 kW 10 kW Length 37.0 (940) 43.0 (1092) Width 21.0 (533) 23.0 (584) Height 26.75 (679) 26.75 (679) Generator NOTE: The dimensions shown are compartment inside measurements. The compartment must allow 1 1/2 in.(38 mm) clearance on all sides of generator.
Page 72
To Radiator Inlet From Radiator Outlet 1. Initial Coolant Fill 2. Coolant Fill at Coolant Recovery Tank Figure 6-17. Cooling System Fill (Coolant Recovery Tank) 6-16 Installation TP-5594 5/95...
Fuel System The diesel fuel system for the generator set must be WARNING designed to operate independently of the system for the vehicle engine if both engines are to be operated at the same time. The best way to do this is to have separate fuel tanks;...
NOTE engine efficiency will be achieved by supplying cool fuel Do not tee into fuel injected fuel systems. Use a two dip to the engine. The fuel tank capacity and the amount of tube arrangement for fuel supply. Consult an authorized fuel will affect cooling capability.
Exhaust Systems Carefully plan the generator exhaust system to ensure a Carbon monoxide can cause severe nausea, safe, quiet installation. Be sure the installation will fainting, or death. Install exhaust system tail pipe so comply with all state and local requirements and discharged exhaust gases will not be drawn into vehicle interior through windows, doors, air conditioners, etc.
Page 76
NOTE clearances are maintained and exhaust piping bends are minimized. Use a tail pipe as short as possible with Suspend exhaust system components beneath the as few gradual bends as possible to reduce back undercarriage with automotive-type tailpipe hangers pressure; maximum back pressure allowed is 28 in. (shock mounted) only.
Electrical Systems Battery And Connections Battery, load lead, and remote switch panel connections are needed to complete the installation. Make final A separate 12-volt battery is recommended for the connections to the battery only after all other generator set. With a separate battery, cables can be connections have been made as this will prevent kept short which eliminates the problem of excessive unintentional starting.
Page 78
WARNING View A Using Separate Battery for Generator Set Sulfuric acid in batteries. Can cause severe injury or death. Use protective goggles and clothes. Battery acid can cause permanent damage to eyes, burn skin, and eat holes in clothing. Explosion can cause severe injury or death. Battery gases can cause an explosion.
AC load lead L0 (white or gray) is always the neutral lead short circuit. on Kohler generator sets. Make sure the neutral of the AC Vehicle Circuit AC Vehicle Circuit Ground Fault...
Remote Switch Connection WARNING (Single-Phase Models Only) Controllers include an accessory plug (P3) for easy connection of the remote switch to the start/stop switch, preheat switch, oil pressure gauge (if equipped), water temperature gauge (if equipped) and generator ON Hazardous voltage. lamp wiring harness (available separately).
Page 81
Pin No. Lead No. Function Ground On Lamp Water Temperature Start Stop-Preheat Oil Pressure ON Lamp Oil Pressure Gauge (if equipped) Water Temperature Gauge (if equipped) Start Stop-Preheat Ground Figure 6-24. Panel Wiring (P3 Wiring Harness) TP-5594 5/95 Installation 6-25...
Appendix A. Glossary of Abbreviations Abbreviations are used throughout this manual. abbreviated form. The commonly used abbreviations Normally they will appear in the text in complete form are shown below. Some items may not apply to this with the abbreviation following in parentheses the first application.
Page 103
Abbreviation Description Abbreviation Description International Standards Organization not required joule, joules overcrank Japanese Industry Standard outside diameter kilogram, kilograms original equipment manufacturer kg/cm kilograms per square centimeter overspeed kilogram meter(s) oversize kilojoules (btu cal) OSHA Occupational Safety and Health Act kilometer, kilometers overvoltage kiloPascal, kiloPascals...
Appendix B. Operating Hour Service Log The following is provided to help you keep a cumulative dates required services were performed. Enter hours to record of operating hours on your generator set and the the nearest quarter hour. OPERATING HOURS SERVICE RECORD HOURS RUN CUMULATIVE...
Page 105
TP-5594 5/95 KOHLER CO. KOHLER, WISCONSIN 53044 PHONE 414-565-3381 FAX 414-459-1646 (North American Sales), 414-459-1614 (International) PRINTED IN U.S.A. FOR SALES & SERVICE IN U.S.A. & CANADA PHONE 1-800-544-2444...