John Deere 300 Series Diesel Engines 3179, 4239, 6359, 4276, 6414 Service Manual

Technical Scope and Service Data

• Covers John Deere 300 Series Diesel Engines including 3179, 4239, 6359, 4276, and 6414 configurations in both naturally aspirated and turbocharged variants
• Official OEM publication CTM4, revised October 1995
• Contains 547 pages of service documentation, including exploded views, torque-turn specifications, and dynamic timing procedures
• File includes a full OCR text layer for rapid keyword navigation across all 199 technical groups
• Accessible from your device as soon as the order is placed
• Stored against your account so you can retrieve it after a hard-drive loss
• Full-text search finds any part number in seconds
• Suitable for printing individual sections for shop-floor use
• This 1995 revision supersedes all earlier editions and provides the specific dynamic timing values required for the 14B-series and later engine builds

Engine Service and Rebuild Overview

This manual provides detailed service instructions for the 300 Series diesel engine family. It covers the repair of cylinder heads, valve trains, lubrication systems, and cooling components, alongside technical rebuilding sequences. The document outlines procedures for components including crankshafts, pistons, connecting rods, and turbochargers, providing specialized rebuild sequences that align with factory standards.

Additional sections document engine mounting, engine lifting techniques, and comprehensive sealant application charts that specify the correct thread lockers and gasket sealants for each fastener application. Service technicians can locate identification data for various engines produced at Dubuque and Saran facilities, including detailed application charts for agricultural and industrial equipment.

Specifications and Technical Highlights

Technical data is provided for critical engine measurements, including valve clearance, cylinder head flatness, and valve stem dimensions. The flywheel housing cap screw torque is specified at 135 N·m (100 lb-ft). Intake valve clearance for the 300 Series is listed at 0.35 mm (0.014 in.) in the valve clearance specification table. Engine crankcase oil fill capacity for these units is documented at 10.5 L. The cylinder head bolt torque values are documented in a multi-stage sequence, with final-stage angles of 50°–70° specified for 112 mm flanged-head bolts.

Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions. This official 547-page John Deere technical manual provides comprehensive repair, testing, and rebuild specifications for the 3179, 4239, 6359, 4276, and 6414 diesel engine series.