HomeCummins/OnanCummins/Onan C135 D6

Cummins/Onan C135 D6 Generator Set

The Cummins/Onan C135 D6 is a 136 kW (170 kVA) Diesel standby generator set powered by a Cummins/Onan 6BTA5.9-G3 engine. It is available at 255/440 V, 230/400 V, 220/380 V, 127/220 V and 277/480 V, 3-phase, 50 Hz and rated 95 A. It holds about 100 L (26.4 gal) of oil and 100 L (26.4 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 1 group-100 battery at 12 V. The set measures 2220×1050×1565 mm (87.4×41.3×61.6 in), weighs about 1219 kg (2687 lb) and produces 85 dBA at 1 m. An integrated tank holds 250 L (66.0 gal), roughly 10 hours of runtime.

136 kW
Standby
5.88 L
Displacement
100.0 L
Oil capacity
2
Document types

How to read your Cummins/Onan serial & model number →

Typical fuel consumption for 135–140 kW Diesel generators →

Compare with other 135–140 kW Diesel generators →

Specifications

FuelDiesel
Frequency50.0 Hz
Standby power136 kW
Standby kVA170
Prime power124 kW
EmissionsTier 1
ControllerMechanical, PowerCommand
Oil capacity100.0 L
Alternator6BTA5.9-G3
Voltage options255/440 V, 230/400 V, 220/380 V, 127/220 V, 277/480 V
Phase3
Rated current95 A
Power factor0.8
Circuit breaker95 A
Battery group100 AH
Battery voltage12 V
Battery quantity1
Coolant capacity100 L
Max ambient40 °C
Dimensions (L×W×H)2220×1050×1565 mm
Dry weight1219 kg
Wet weight2049 kg
Sound level85.0 dBA @ 1 m
Fuel tank250.0 L
Tank runtime10 hr

Engine

Cummins/Onan 6BTA5.9-G3
Oil capacity100.0 L
Coolant capacity100.0 L
Displacement5.88 L
AspirationTurbocharged
Rated speed1500 rpm

Maintenance & consumables

for the Cummins/Onan 6BTA5.9-G3
ItemSpecCapacityPart #Interval
Air filterNormal duty air filter.
Fuel filterOil and fuel filter fitted, water separator.
Oil filterOil and fuel filter fitted, water separator.
Battery
Belt
CoolantCoolant capacity (only engine)9.9 l
OilLubrication system oil capacity16.4 l
Spark plug

Common questions

What size generator is the Cummins/Onan C135 D6?

The Cummins/Onan C135 D6 is rated 136 kW standby (170.0 kVA).

What engine does the Cummins/Onan C135 D6 use?

The Cummins/Onan C135 D6 is powered by the Cummins/Onan 6BTA5.9-G3 engine.

What kind of fuel does the Cummins/Onan C135 D6 run on?

The Cummins/Onan C135 D6 runs on Diesel.

What's the oil capacity on a Cummins/Onan C135 D6?

The Cummins/Onan 6BTA5.9-G3 engine in the Cummins/Onan C135 D6 has an oil capacity of 100.0 liters.

Which alternator is fitted to the Cummins/Onan C135 D6?

The Cummins/Onan C135 D6 uses a 6BTA5.9-G3 alternator.

Parts

6model family
Part #DescriptionQtySystem
0908-0101Lead Acid Battery1Battery Amazon eBay
0908-0115Generator Set Operator Manual1Operator manual Amazon eBay
A030F380Operator manual Amazon eBay
0908-0107Radiator Information1Service part / kit Amazon eBay
0908-0110Health and Safety (Diesel Generator Sets)1Service part / kit Amazon eBay
4021389Service part / kit Amazon eBay

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime36.09.51
Prime75%1.55.7
Standby40.010.57
Standby75%1.55.7

Available documents

Spec sheet — C135D6 EN (Cummins/Onan)Spec sheet — C150D5 6BTA (Cummins/Onan)Spec sheet — S-6319-EN (Cummins/Onan)Service manual — 908-0606 Cummins 6BTA5.9G2 Engine Installation Manual (12-2009) (Cummins/Onan)
Other sets with this engine