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Cummins/Onan QSB3.3 Generator Set

Cummins/Onan QSB3.3 generator set: . Specifications, engine details, filters, oil capacity and 4 document types.

4
Document types

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

Specifications

Ratings spec sheet not in our library yet — see the documents below.

Filters & service parts

model family
ItemSpecCapacityPart #Interval
Air filter—
Fuel filter—
Oil filter—1500 hr
Battery—
Belt—
Coolant84.0 L—250 hr
Oil132.0 L—500 hr
Spark plug—

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.

Service intervals

5
ItemActionHoursMonthsNotes
Lubricating oilTest250 hr6 moFirst service — For high horsepower engines with Eliminator™ oil filter option: take oil samples every 250 hours and analyze per Cummins Engine Oil Recommendations Bulletin 3810340; repeat for at least three oil change intervals.
filtersChange1000 hrwith CENTINEL, depending on load factors
ELIMINATOR self cleaning filter coreOther1500 hrRequires servicing only every 1,500 hours. Saves up to 90% of lube system maintenance costs and increases productivity.
fuel filterChange1500 hrFleetguard NanoNet media
engine oilChange4500 hrwith CENTINEL, railway applications

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

Recommended fluids

FluidGradeStandardAmbientCapacityNotes
Engine oilCummins Engine Oil Recommendations Bulletin 3810340Used to analyze oil samples for high horsepower engines with Eliminator™ oil filter option.
FuelB100 biodieselASTM D6751Must conform prior to blending; revised to include a cold soak test; stability requirement still in effect.
FuelB20 biodiesel blendASTM D7467Applies to biodiesel blends B6–B20; includes oxidation stability requirement; replaces Cummins' previous EMA B20 specification requirement. Must be purchased from a BQ9000 Certified Marketer; B100 must be sourced from a BQ9000 Accredited Producer.
FuelB5 biodieselAll Cummins automotive and industrial engines are compatible with B5 biodiesel.
Fuelbiodiesel (Europe)EN 14214Published by CEN, European Committee for Standardization. Equivalent biodiesel specifications required internationally.

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

Procedures

2
Oil sampling for high horsepower engines with Eliminator™ oil filter option maintenance
  1. Take oil samples every 250 hours of operation.
  2. Analyze samples according to Cummins Engine Oil Recommendations Bulletin 3810340.
  3. Repeat for at least three oil change intervals to ensure consistent oil behavior.
Switching from petrodiesel to B20 on used engines maintenance

⚠ B20 has a solvent nature and may clean the vehicle fuel tank and lines.

  1. Install new fuel filters when switching to B20.
  2. Replace fuel filters at half the standard interval for the next two fuel filter changes.
  3. After the initial period, revert to intervals specified in the O & M manual.
  4. For EPA 2007 on-highway midrange engines, sample oil for the first 6 months to monitor fuel dilution.

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

Available documents

Engine spec — 0032276 (Cummins/Onan)Spec sheet — 4087118 (Cummins/Onan)Reference — 0032425 (Cummins/Onan)Reference — QST30 nuevo (Cummins/Onan)Service manual — B20BiodieselFAQJan2009 (Cummins/Onan)

This page was generated from the 5 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.