John Deere 4500/4600/4700 Tractor Service & Repair Manual, 1998–2000 (P/N TM1679)

John Deere technical manual P/N TM1679, revision 27JUN00, covers the 1998–2000 4500, 4600 and 4700 Compact Utility Tractors. This edition replaces the October 1, 1999 release.

PDF Search, Diagram Detail and Page Count

Text search and diagram detail: Text search works across the main service sections, but some full-page electrical diagrams, wiring harness drawings and hydraulic schematics have no searchable text. There are no embedded PDF bookmarks. Small connector numbers and wire labels on the large schematics require zooming.

One printable, English-language 664-page PDF, including the cover, tractor illustration, six notes pages and 12-page index.

Diesel, Drivetrain and Hydraulic Repair Coverage

The following selected coverage highlights major repair and diagnostic sections rather than the complete contents. Other topics include ROPS removal and windshield washer repair.

• Diesel engine: Engine removal, cylinder-head and valve service, piston and crankshaft inspection, injection timing, cooling-system tests and fuel-nozzle service.

• Electrical troubleshooting: North American, European and European cab wiring diagrams, starting and charging tests, plus fuel-shutoff, PTO and safety-interlock diagnosis.

• Gear and PowrReverser transmissions: Front and rear tractor splitting, collar-shift gearbox disassembly, traction-clutch overhaul and factory-installed Creeper option service.

• Hydrostatic drive: Pump and motor disassembly, inspection and reassembly, neutral-creep adjustment, charge-pressure testing and hydraulic-system bleeding.

• Final drives and PTO: Differential backlash adjustment, planetary final-drive repair, 4-WD front-axle service, PTO clutch overhaul and rear, two-speed and mid-PTO shaft service.

• Hydraulics: Gear-pump repair, Selective Control Valve (SCV) service, rockshaft lift-cylinder work, draft-sensing adjustments, and flow, relief-pressure and leakage tests.

• Steering and brakes: Steering-unit and cylinder diagnosis, toe-in adjustment, wet-disc brake repair, and pedal and parking-brake linkage adjustments.

This manual is written for experienced technicians and calls for the measuring equipment, special tools and tractor-support equipment specified for each job.

Engine Inspection, Fuel Injection and Cooling

The 4TNE-series engine chapter pairs step-by-step repair procedures with wear limits, valve-clearance data and component torque specifications. Separate checks cover compression, lubrication-system performance and combustion leakage into the cooling system. JIS, metric and inch fastener torque tables are also included.

Fuel-injection coverage includes nozzle testing and service, pump removal and installation, and static timing adjustment. Internal injection-pump and governor repair is assigned to a qualified fuel-injection repair shop; fast-idle and torque-capsule adjustments are restricted to an authorized service facility.

Drivetrain Variants and Neutral-Creep Diagnosis

The mechanical sections distinguish the dry CST traction clutch from the wet PowrReverser clutch. Creeper-equipped PRT tractors have different output-shaft components, with separate disassembly and inspection coverage.

Hydrostatic diagnosis distinguishes pedal-linkage problems from servo-motor neutral adjustment. The latter specifies the JDG 1291 Neutral Creep Adjustment Tool Set; tractors without the access hole require the LVA10365 Hydro Adjustment Kit. The Hydrostatic System Schematic connects pump, motor and charge-system operation with the related diagnostic checks.

Electrical Diagnosis by Market and Build

The systems-based layout brings component locations, operating theory, diagnostic checks and repair information together. This lets a technician relate a symptom to the circuit, test point and assembly involved before selecting a repair procedure.

The Power Circuit Electrical Schematic supports supply and starting-circuit checks, while the Cab Electrical Schematic addresses cab-specific equipment. Wire-color tables and harness views distinguish market and build variations. PIP Solution 47031 separates two groups of PRT tractors requiring different neutral-start sensing modifications.

Hydraulic Tests, Steering and Final-Drive Service

The SCV and Rockshaft Hydraulic Schematic shows the relationship between implement control, PTO oil supply and the lift cylinder. Pump-flow and relief-pressure tests distinguish tractors with SCVs from those using a manifold block; rockshaft tests address lift performance and internal leakage.

The Steering System Schematic supports steering-control-unit and cylinder checks. The steering control unit (SCU) is replaced as an assembly, rather than internally rebuilt.

Front-axle hub service specifies a new torque-prevailing hub-shaft nut and prohibits impact-wrench tightening as part of the bearing-preload work. During hydraulic testing, interrupting oil flow to the PTO valve can deprive the clutches of lubrication and damage them.

Tractor splitting and hydraulic tests involve heavy components and pressurized oil. Follow the manual’s support and pressure-relief precautions.

A Preview of Engine Clearances and Cooling-Test Limits

Engine inspection data lists a connecting-rod bearing oil clearance of 0.04–0.07 mm for the covered diesel engines, alongside separate wear limits and measurement procedures. The specified engine slow-idle speed is 950 ± 50 rpm, with a dedicated adjustment procedure.

For cooling-system leak testing, the manual limits applied test pressure to 97 kPa (14 psi). This is the pressure-test ceiling, rather than the separate radiator-cap opening specification.