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Kohler KG10V08T-6DGS Engine

The Kohler KG10V08T-6DGS is a 10.3 L 8-cylinder turbocharged and aftercooled engine rated at 1800 rpm, producing up to 245 kW. It powers generator sets from Kohler, including the KG200.

Also known as: Kohler KG10V08T-6DGS

Part of the Kohler KG10V08T engine family — 2 variants share parts & fitment.

10.3 L
Displacement
8
Cylinders
1800 rpm
Rated speed
245 kW
Gross power
On this pageSpecsGenerator setsFAQService intervalsTorque & specsProcedures

Engine specifications

Displacement10.3 L
Cylinders8
AspirationTurbocharged and Aftercooled
Rated speed1800 rpm
Gross power245 kW

Troubleshooting

4

Symptoms & remedies

SymptomRemedy
Battery acid splashes in the eyes or on the skinImmediately flush the affected area for 15 minutes with large quantities of clean water. Seek immediate medical aid.
Battery acid cleanupAdd 500 g (1 lb.) of bicarbonate of soda (baking soda) to a container with 4 L (1 gal.) of water and mix the neutralizing solution. Pour the neutralizing solution on the spilled battery acid and continue to add the neutralizing solution until all evidence of a chemical reaction has ceased. Flush the resulting liquid with water and dry the area.
Fire-damaged or burned O-ringsO-rings and other fluoroelastomer seals exposed to fire or temperatures above 316°C (600°F) may decompose forming hydrofluoric acid. Avoid inhalation or skin contact. Do not incinerate O-rings.
Used engine oilAvoid contact with skin. Thoroughly wash your hands and nails with soap and water shortly after handling used engine oil. Wash or dispose of clothing or rags containing used engine oil.

Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.

Service intervals

27
ItemActionHoursMonthsNotes
Wire-cable insulation breakdownTest500 hr36 moThree Years or 500 Hrs; Visually Inspect and Test
APM603 RTC batteryReplace24 moTwo Years, when indicated by the controller (range 2-10 years)
Air ducts, louversClean12 moYearly; Check and Clean
Battery charger operation, charge rateInspect1 moMonthly
Battery electrolyte levelCheck1 moMonthly
Battery load testingTest12 moYearly
Battery specific gravity, charge stateTest1 moMonthly
Circuit breakers, fusesInspect1 moMonthly; Visually Inspect, Check, Replace as necessary, Clean, Test; do not break manufacturer's seals or internally inspect
Coolant temperature protection levelTest6 moSix Months; follow engine manufacturer's manual
Crankcase breatherClean3 moQuarterly; follow engine manufacturer's manual
Excessive back pressureTest12 moYearly
Fan and alternator beltsInspect1 moMonthly; follow engine manufacturer's manual, Replace as necessary
Flexible connector(s)Inspect6 moSix Months; Visually Inspect
Fuel pipingInspect12 moYearly; Visually Inspect
Hangers and supportsInspect12 moYearly; Visually Inspect
Insulation, fire hazardsInspect3 moQuarterly; Visually Inspect
Louver motors and controlsTest12 moYearly; Visually Inspect, Clean, Test
Radiator exteriorClean12 moYearly; Check and Clean
Recharge after engine startCheck1 moMonthly
Remote controlTest1 moMonthly
Remove corrosion, clean and dry battery and rackInspect1 moMonthly; Visually Inspect and Clean
Run generator setTest1 moMonthly
Safety and alarm operationTest6 moSix Months; Check and Test
Tighten DC electrical connectionsCheck6 moSix Months
Tighten control and power wiring connectionsCheck12 moYearly
Water supply to the heat exchangerCheck12 moYearly
Wire abrasions where subject to motionInspect3 moQuarterly; Visually Inspect and Check

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Service specifications

7
TypeItemValueUnitCondition
OtherAlternator end bracket bearing replacement interval10000hoursmore frequently if annual inspection shows excessive rotor end play or bearing damage
OtherBattery specific gravity - charge threshold1.215at 26.7°C (80°F), charge battery if below this
OtherBattery specific gravity - fully charged1.260at 26.7°C (80°F)
OtherBattery specific gravity max cell-to-cell variance0.01
OtherGaseous fuel system leak test pressure6-8oz per sq in (10-14 in water column)
TemperatureBattery specific gravity reference temperature26.7°C (80°F)
TemperatureBattery specific gravity temperature correction factor0.004specific gravity points per 5.5°C (10°F)

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

6
Battery Specific Gravity Check diagnostic

Tools: Battery hydrometer

  1. Use a battery hydrometer to check specific gravity of electrolyte in each cell (filler-cap batteries only).
  2. Hold the hydrometer vertically and read the value.
  3. Correct the reading using the temperature correction table if the hydrometer lacks one.
  4. Battery is fully charged if corrected specific gravity is 1.260 at 26.7°C (80°F).
  5. Charge the battery if specific gravity is below 1.215 at 26.7°C (80°F).
  6. Maintain specific gravity within ±0.01 between cells.
Air Filter Element Replacement maintenance

⚠ Do not operate the generator set with the air cleaner removed.

  1. Remove the generator set from service (remove load, shut down, controller Out-of-Service mode, press emergency stop).
  2. Disconnect power to battery charger.
  3. Remove battery cables, negative lead first.
  4. Loosen the filter clamp and remove the filter element from the air intake elbow.
  5. Install new/cleaned filter element and tighten the filter clamp.
Battery Electrolyte Level Inspection maintenance

⚠ Battery acid can cause blindness and burn skin; wear splashproof goggles, rubber gloves, boots.

  1. Check the electrolyte level at the specified interval on batteries with filler caps.
  2. Remove the filler caps and verify electrolyte reaches the bottom of each filler hole.
  3. Refill as necessary with distilled water only (do not add fresh electrolyte).
  4. Tighten the filler caps.
  5. If water was added during freezing temperatures, run the generator set 20-30 minutes to mix electrolyte and water.
Procedure to Drain Cooling System maintenance

⚠ Hot coolant and steam can cause severe injury or death.

  1. Stop the generator set and allow it to cool.
  2. Deenergize the block heater, if equipped.
  3. Cover the pressure cap with a rag and remove it to prevent air pockets.
  4. Open the radiator and/or engine block coolant drain valve(s) and allow the system to drain.
  5. If mineral deposits or dirt/grease are present, proceed to flush and clean; otherwise proceed to refill.
Procedure to Refill Cooling System maintenance

⚠ Do not add coolant to a hot engine; wait until the engine has cooled.

  1. Cover the pressure cap with a rag and remove it.
  2. Close drain valve(s) and tighten hose clamps.
  3. Fill the cooling system with the recommended Kohler coolant mixture, from the bottom if possible.
  4. Replace the pressure cap.
  5. Operate the generator set until the thermostat opens (upper hose warms).
  6. Stop the engine, allow it to cool, check and repair any leaks.
  7. Remove pressure cap and add coolant to just below the overflow tube opening.
  8. Replace the pressure cap.
  9. Check coolant level in the sight glass; maintain between high and low marks.
  10. Reenergize the block heater, if equipped.
Radiator Maintenance maintenance

⚠ Avoid damaging fins with rough brushing or excessive jet pressure.

  1. Periodically check for leakage from core or tank connections.
  2. Inspect liquid level via the top tank sight glass at regular intervals.
  3. Test antifreeze before cold weather periods.
  4. For long standby periods, check top tank interior for scale/rust every 1-3 months.
  5. Remove dirt/debris from core face with compressed air, steam, or water (stand back at least 0.9 m/3 ft if using water, keep stream parallel to fins).
  6. Clean fan blades once per year using a stiff brush or air nozzle, or nonflammable solvent with brush for solid deposits.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What is the displacement of the Kohler KG10V08T-6DGS?

The Kohler KG10V08T-6DGS has a displacement of 10.3 liters with 8 cylinders.

Which generators use the Kohler KG10V08T-6DGS engine?

The Kohler KG10V08T-6DGS powers 1 generator set(s), including Kohler KG200.