John Deere 6466 Diesel Engine Service Manual
Provides comprehensive service and repair procedures for the John Deere 6466 Diesel Engine (Series 400). Includes detailed information on disassembly, assembly, and specifications. PN: CTM1
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John Deere Models Covered & Key Technical Specifications
Models: John Deere 6466 (Series 400) Diesel Engine
Sub-models / Variants: 6466D (Naturally Aspirated), 6466T (Turbocharged), 6466A (Turbocharged and Aftercooled)
Trade Names: Series 400
Build Years: 1987–1994
Serial Numbers: 227600 and earlier, 227601 and later
Technical Data:
- Engine configuration: 6-cylinder diesel
- Displacement: 466 cubic inches (CID)
- Valve clearance (cold intake): 0.41–0.51 mm (0.016–0.020 in.)
- Valve clearance (cold exhaust): 0.66–0.76 mm (0.026–0.030 in.)
- Cylinder head bolt torque (Grade 8): 157 Nm (115 lb-ft)
- Cylinder head bolt torque (Grade 180): 245 Nm (180 lb-ft)
- Valve seat angle (6466D): 45 degrees
- Valve seat angle (6466T/6466A): 30 degrees
John Deere Manual Features & Content Preview
John Deere 6466 Series 400 Engine Technical Manual
- Covers John Deere 6466 Series 400 naturally aspirated, turbocharged, and turbocharged-aftercooled diesel engines
- Official John Deere publication CTM1, revised October 1994
- Contains 577 pages of technical specifications, disassembly sequences, assembly procedures, and torque values
- Accessible from your device as soon as the order is placed
- OCR text layer lets you jump to a torque spec by keyword
- Includes 12 wiring and system schematics plus 74 exploded-view diagrams
- Fits agricultural and industrial John Deere machinery including 6600, 7720, 8820, 690C, 792D, and various tractors
- This 1994 revision replaces the earlier 1987 edition and incorporates updated sealant and tool specifications for the 6466 engine build
Component Repair and Disassembly
This John Deere 6466 manual documents repair and testing for the Series 400 engines. It provides information on engine disassembly, assembly, and maintenance requirements. Detailed sections document the removal of the turbocharger, cylinder head, oil pan, and timing gear, providing necessary data to facilitate engine overhauls in both field and workshop environments. The publication details standard service equipment and essential tools required for engine-specific tasks.
Engine Specifications and Technical Data
The technical documentation includes critical assembly data such as valve clearance settings, valve lift measurements, and cylinder liner standout specifications. Cylinder head torque values are documented for various fastener grades including SAE Grade 8, ASTM Grade 180, and flanged-head "SPECIAL" bolts. Valve clearance for the intake is listed at 0.41–0.51 mm in the cylinder head specification table. The engine block requires 466 CID for standard operation. Maximum voltage throughput reaches 121 A for applicable systems.
Reference only — always consult a certified technician before performing service on this equipment. An official 577-page John Deere technical manual covering the 6466 Series 400 diesel engine, documenting comprehensive repair, assembly, and technical specifications for the 6-cylinder engine build.
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