John Deere PowerTech 6068 OEM Diesel Engine Above 130kW (174 hp) Component Technical Manual (CTM104719)

This is the engine manual for the 6.8L PowerTech 6068 in its Interim Tier 4 form, as supplied to other equipment makers. If the engine sits in a generator set, pump, or specialty machine rather than a John Deere tractor, CTM104719 is where the engine repair procedures and trouble codes live. It applies wherever this engine is installed.

Fits

John Deere PowerTech 6068 OEM diesel engines rated above 130 kW (174 hp), Interim Tier 4 / Stage III B. Manual dated 07OCT13.

What this manual covers

The repair side covers the full engine: rebuild, cylinder head and valves, block, liners, pistons and rods, crankshaft and flywheel, camshaft and timing gears, lubrication, cooling, intake and exhaust, the electronic fuel system, OEM starting and charging, electrical engine controls, and the aftertreatment devices. The operation side explains how the base engine, cooling, fuel, intake and electronic controls work. Diagnostics include observable symptoms, structured diagnostic instructions and trouble codes for engine position sensing, aftertreatment fuel dosing and application faults. Service tools and specification charts are at the back.

Table of contents

• Group 000-002 - Safety, Identification, Fuels/Lubricants - engine ID and fluid specifications
• Group 010-050 - Engine Rebuild Through Timing Gear Train - cylinder head, block, crankshaft, camshaft repair
• Group 060-070 - Lubrication and Cooling Systems - repair and adjustment
• Group 080-090 - Air Intake, Exhaust and Electronic Fuel System - repair and adjustment
• Group 100-115 - Starting, Charging, Electrical Controls and Aftertreatment Devices - OEM electrical and emissions hardware repair
• Group 120-140 - Base Engine, Cooling, Fuel, Air Intake and Electronic Control Operation - theory of operation
• Group 150-178 - Observable Diagnostics and Trouble Codes - engine position, fuel dosing aftertreatment, application diagnostics
• Section 05/06 - Tools and Specifications - diagnostic service tools and specification charts

Check before you buy

Check the engine's power rating and emissions label. Lower-rated 6068 engines and other emission tiers have their own CTMs. The machine the engine is installed in isn't covered.

PDF, 2,240 pages, English. You get the download link right after checkout. Sold by an independent seller, not affiliated with or endorsed by John Deere.