Anticorrosion Zinc | Kohler 3.5CFZ, 4CZ, 5CFZ, 6.5CZ guide

Anticorrosion Zinc

An anticorrosion zinc anode is installed in the heat exchanger to prevent electrolytic corrosion by seawater. When different metals, such as iron and copper, are placed in a highly conductive liquid (seawater), the iron gradually rusts. The zinc has chemical properties which cause the seawater to react to it rather than the engine components.

The anticorrosion zinc anode should be checked every 100 hours or three months and replaced every 200 hours or yearly. Depending upon operating conditions and seawater properties, the anticorrosion zinc anode may have to be replaced more frequently. See Figure 3-17 and use the following procedure.

INPUTSTOP START
10A
FUSE
00 0 0 0	1/10
TOTAL HOURS
BATT.
CHRG.
	2	1
		258000-D

1. Heat Exchanger

2. Anticorrosion Zinc

Figure 3-17. Removing Anticorrosion Zinc

1.With generator set cooled, drain the cooling seawater system. Close seacock, remove anticorrosion zinc anode from heat exchanger.

2.Use a wire brush to remove the loose corrosion on the anticorrosion zinc anode. Replace the anode when less than 50% of the 11/32 in. (9 mm) dia. by 9/16 in. (14 mm) long portion of zinc remains.

3.Clean threaded hole of heat exchanger and coat threads of anticorrosion zinc anode with pipe sealant (suitable for marine applications). Install anticorrosion zinc anode into heat exchanger.

4.Open seacock. Start generator set and check for leaks at the anticorrosion zinc anode location. Check for seawater flow by observing water discharge from exhaust outlet.

3-16 Scheduled Maintenance

TP-5695 12/93

Image 44

Kohler 3.5CFZ, 4CZ, 5CFZ, 6.5CZ installation manual Removing Anticorrosion Zinc

Contents

Marine Generator Sets Models5CFZ 5CZ California Proposition Table of Contents Safety Precautions and Instructions Carbon monoxide Can cause severe nausea, fainting, or death Carbon monoxide can cause severe nausea Sulfuric acid in batteries Can cause severe injury or death Sulfuric acid in batteries can cause severe injury or Explosive fuel vapors Can cause severe injury or death Explosive fuel vapors can cause severe injury or Accidental starting Can cause severe injury or death Accidental starting can cause severe injury orRotating parts Can cause severe injury or death Flying projectiles can cause severe injury or death Fire Can cause severe injury or death Sudden backfire can cause severe injury or deathSudden flash fire can cause severe injury or death Hazardous noise Can cause loss of hearing 246242 Reference Material Pleasure Craft Commercial Vessels Additional References Routine Service Parts Part Description Kohler Part No Glossary of Abbreviations Abbreviation Description NEC Specifications SpecificationsGeneral Specifications Introduction Generator 5CFZ/4CZ 5CFZ/6.5CZ Engine GX360EV BPR4HS NGK Accessories Service Views Service Views typical Operation Prestart Checks Controller Controller Starting Stopping Engine Safety Shutdown Switches Circuit Protection High Water Temperature Shutdown Switch Remote Panel Features Remote Panels Optional Remote Start and Four-Meter Features Remote Start and Four-Meter Panel Kit Scheduled Maintenance Service Schedule Or 2 Years Generator Specifications Lubrication System Adding Oil Oil Change/Oil Filter Change Fuel System Removing Oil Filter Fuel Pump Screen Fuel Pump Screen Carburetor Adjustments Carburetor/Choke Lubrication Spark Plugs Ignition System ServiceIgnition System Problem Means of Identification Possible Cause Normal Gap bridgedOil fouled Carbon fouled 12. Checking Spark Plug Gap Hot coolant and steam Can cause severe injury or death Cooling Systems- Closed/Heat ExchangerFilling and Checking 14. Air-Bleed Screw Flushing and Cleaning TP-5695 12/93 Scheduled Maintenance Anticorrosion Zinc 17. Removing Anticorrosion Zinc Air Cleaner Mixing Elbow Servicing Air CleanerPressure Cap Servicing Mixing Elbow Battery CleaningChecking Electrolyte Level Checking Specific Gravity 21. Specific Gravity Temperature Correction Charging Valve Adjustment 22. Determining Top Dead Center Lubrication Governor AdjustmentGovernor General Generator ServiceWattage Requirements Storage Procedure Troubleshooting EngineUnit cranks but will Not start Operates erratically Problem Possible Cause Corrective Action Stops suddenlyLacks power Electrical System Generator Wiring Diagrams Schematic Wiring Diagram--3.5CFZ, 4CZ, 5CFZ, and 6.5CZ Diagrams 4CZ To Load Wire Generator SetsTo Generator To Shore Set Power LO Neutral Ground Load SideLine Side 60 Hz L1--L3 Without Jumper LeadPage Motor Loads InstallationGenerator Selection and Wattage Requirements Appliance Loads Kilowatt Derating Typical Location and Mounting LocationVentilation SpaceMounting Air Requirements CFM L/min Model Combustion Cooling Fuel Systems Fuel Supply Anti-Siphon Provisions Fuel LinesFuel Pump Lift Capabilities Fuel Consumption Max. Lift ft. m In. mm Cooling Systems 11. Intake Strainer Closed/Heat Exchanger 13. Seawater Strainer Exhaust Systems 15. Closed/Heat Exchanger Cooling System 17. Typical Above Waterline Installation Carbon monoxide Above Waterline Mid/Below Waterline AC Voltage Connections Installation in Steel or Aluminum VesselsElectrical Systems Battery Wiring Remote Start Switch Connection Lead Designations Pin Function Dimension Drawing--3.5CFZ, 4CZ, 5CFZ, and 6.5CZ Section Sound Shield--Optional on 3.5CFZ and 4CZ Standard on 5CFZ and 6.5CZ For Sales & Service in U.S.A. & Canada Phone Parts Ordering Instructions Operating Hour Service Log Kohler CO. KOHLER, Wisconsin 53044 Phone