John Deere 3029, 4039, 4045, 6059, 6068 Diesel Engines Workshop Manual
John Deere Models Covered & Key Technical Specifications
Models: John Deere 3029, 4039, 4045, 6059, 6068
Sub-models / Variants: Naturally Aspirated, Turbocharged, Turbocharged and Air-to-Air Aftercooled, Turbocharged and Air-to-Coolant Aftercooled, 3-Cylinder, 4-Cylinder, 6-Cylinder
Trade Names: Series 300 Diesel Engines
Model Years: 1995
Serial Numbers: 304490 (4039/4045 D-series cutoff), 335978 (4045/6059/6068 T-series cutoff)
Technical Data:
- Engine displacements: 2.9 L, 3.9 L, 4.5 L, 5.9 L, 6.8 L
- Firing order (3-cyl): 1-2-3
- Firing order (4-cyl): 1-3-4-2
- Firing order (6-cyl): 1-5-3-6-2-4
- Cylinder head cap screw torque (final step): 150 N·m (110 lb-ft) plus 60° ± 10°
John Deere Manual Features & Content Preview
- Covers the 1995 John Deere 3029, 4039, 4045, 6059, and 6068 diesel engines (industrial and agricultural applications), including 3, 4, and 6-cylinder naturally aspirated and turbocharged variants.
- Original OEM publication CTM8, T4039DN003, dated 23FEB95.
- Contains 505 pages of technical specifications, torque charts, and component assembly sequences.
- OCR text layer allows technicians to locate specific torque specs or part numbers via keyword search.
- Documentation for the Series 300 family, detailing disassembly and engine repair standards for units manufactured in Dubuque, Saran, and other global facilities.
- Authorized reference for internal engine rebuilds and routine maintenance, including specific guidelines for sealant application and valve train tolerances.
Component Assembly and Overhaul
This John Deere Series 300 technical manual provides a structured overview of rebuilding sequences for the entire engine range. The document outlines essential procedures for engine mounting, cleaning, and heavy block machining. It focuses heavily on the 2.9L to 6.8L engine configurations. Sections detail the exact teardown process. You will find coverage from removing the cylinder head and rocker arm assembly to measuring crankshaft and connecting rod tolerances. Assembly guidelines emphasize proper piston cooling orifice placement and cylinder liner installation. The text also details the application of required sealants and thread lockers for critical fasteners. Always cross-reference these procedures with the complete OEM documentation prior to performing any physical repair work to ensure shop safety and mechanical integrity.
Technical Data and Specifications
The publication includes extensive specification tables for cylinder head and valve systems. Intake valve clearance is listed at 0.35 mm. Cylinder head bolt torque values are documented in a multi-stage sequence. Final-stage angles are set at 60° ± 10°. Furthermore, liner height above the block must be 0.030–0.100 mm, according to the block specification chart. These exact measurements help mechanics maintain tight tolerances during the entire rebuild process.
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