Service Manuals for Cummins 6CTA, ISC, and QSC Engines

Get the most from your Cummins C-Series engines with service and repair manuals from Diesel Parts Direct. Not only do we sell parts that keep your Cummins 6CTA, ISC and QSC engine ticking, but we supply original service manuals for 8.3 liter engines. Stuck for torque settings when replacing bolts on a 6CTA? Need detailed instructions for installing an in-frame overhaul kit on an ISC or QSC diesel? All this and more are included in the Cummins 8.3L engine service manuals.

Maintaining C-Series diesel engines can get complicated, but you can simplify the process with the proper documentation. Diesel Parts Direct has an assortment of Cummins service, operator and troubleshooting manuals to eliminate any guesswork in the repair process.

Think Diesel Parts Direct when you need service manuals for Cummins 6CTA, ISC and QSC engines.

3381968

OPERATOR MANUAL - 6CTA (8.3L)

Genuine Cummins Part

3666003

TrOUBLESHOOTING MANUAL - 6CTA 8.3 (ALL ENGINES)

Genuine Cummins Part

3666008

SERVICE MANUAL - 6CTA 8.3 (1991 - PRESENT)

Genuine Cummins Part

3666022

OPERATOR MANUAL - 4BT / 6BT / 6CTA (MARINE PROPULSION)

Genuine Cummins Part

3666078

WIRING DIAGRAM - QSL (CENTURY SERIES)

Genuine Cummins Part

3666267

WIRING DIAGRAM - ISC

Genuine Cummins Part

3666395

WIRING DIAGRAM - QSC

Genuine Cummins Part

3672137

PARTS CATALOG - ISC

Genuine Cummins Part

3672196

PARTS CATALOG - QSC

Genuine Cummins Part

3810248

OPERATOR MANUAL - 6CTA 8.3 (AUTOMOTIVE)

Genuine Cummins Part

3810275

SERVICE MANUAL - C SERIES (BUILT PRIOR TO 1992)

Genuine Cummins Part

3810428

OPERATOR MANUAL - 6CTA 8.3 POWER UNIT

Genuine Cummins Part

4021330

OPERATOR MANUAL - 6CTA 8.3 (MARINE AND INDUSTRIAL)

Genuine Cummins Part

4021331

WIRING DIAGRAM - 6CTA 8.3 (MARINE)

Genuine Cummins Part

4021418

TROUBLESHOOTING MANUAL - ISC SERIES (BASE ENGINE)

Genuine Cummins Part

4021428

OPERATOR MANUAL - ISC / ISCE / ISL

Genuine Cummins Part

4021508

TOUBLESHOOTING MANUAL - 6CTA 8.3 (MARINE ELECTRONICS)

Genuine Cummins Part

4021518

OPERATOR MANUAL - QSC / QSL

Genuine Cummins Part

4021524

WIRING DIAGRAM - QSB / QSC / QSL / 6CTA

Genuine Cummins Part

4021532

WIRING DIAGRAM - ISBE4 (WITH CM850 CONTROL MODULE)

Genuine Cummins Part

4021553

TROUBLESHOOTING AND REPAIR MANUAL - ISB / QSB / ISC

Genuine Cummins Part

4021571

OPERATOR AND MAINTENANCE MANUAL - QSC / QSL (MARINE)

Genuine Cummins Part

4022257

SERVICE MANUAL - ISC8.3 / ISL

Genuine Cummins Part

4081885

WIRING DIAGRAM - QSL / QSC / 6CTA 8.3

Genuine Cummins Part

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Caterpillar® and all of the Caterpillar® engine models listed on this website are registered trademarks of Caterpillar, Inc. Cummins® and all of the Cummins® engine models listed on this website are registered trademarks of Cummins. Detroit Diesel® and all of the Detroit Diesel® engine models listed on this website are registered trademarks of Daimler AG. John Deere® and all of the John Deere® engine models listed on this website are registered trademarks of John Deere. Allison Transmission® and all of their transmission models listed on this website are registered trademarks of Allison Transmission®. Diesel Parts Direct is not an authorized dealer for Caterpillar, Cummins, Detroit Diesel, John Deere, or Allison Transmission. None of the parts beginning with "DS" or "R" are genuine Caterpillar, Cummins, Detroit Diesel, John Deere, or Allison Transmission items.