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Part of the John Deere Repair Manuals.
This is TM406419, the factory technical repair manual for the John Deere 5G series utility tractors built 2013-2018. It covers the base 5080G, 5090G and 5100G plus every specialty variant Deere hung off this platform: the GL low profile, GF orchard, GN narrow, GV vineyard and GH high clearance models - so if you run a 5085GF in fruit rows or a 5075GV between vines, this is your book. Inside you get full teardown and rebuild coverage of the 4045 PowerTech engine, fuel and air intake, the electrical system, all three transmission families including the 24-12 Power Reverser, steering and brakes, hydraulics, the cab, and the special tools list you need to do the job right.
What's Inside This John Deere 5075G-5100G Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety (Section 05) | 7-25 | Safety Precautions and Decals |
| General Information (Section 10) | 26-94 | Per-Model Engine Specifications, Tune-Up, Fuels and Lubricants, Standard Torques |
| Engine (Section 20) | 95-157 | L 4-Cylinder Overhaul, Cooling, Lubrication, Valve Clearances |
| Fuel and Air Intake Systems (Section 30) | 158-213 | Fuel System, Injection, Filters, Turbocharger and Aftercooler, Air Intake |
| Electrical System (Section 40) | 214-273 | Wiring, Component Location, Sensors, Charging and Starting |
| Drive Train (Without Transmission) (Section 50A) | 274-408 | Clutch, Differential, Final Drives, MFWD, PTO |
| Mechanical Transmissions (Section 50B) | 409-565 | Mechanical Transmission Overhaul, Hi-Lo, Synchro, Adjustments |
| Power Reverser Transmission (24-12) (Section 50C) | 566-631 | Power Reverser 24-12 Transmission Overhaul, Clutch Packs, Pressure Tests |
| Steering and Brake Systems (Section 60) | 632-727 | Steering Pump and Cylinder, Service and Park Brakes, Bleeding |
| Hydraulic System (Section 70) | 728-831 | Hydraulic Pump and Filter, Hitch and Rockshaft, SCVS, Pressure Tests, Pump Torques |
| Miscellaneous (Section 80) | 832-909 | Frame, Ballast, Wheels and Tires, Fenders, Miscellaneous Service |
| Operator's Cab and Open Operator's Station (Section 90) | 910-1042 | Cab and Open Station: Seat, HVAC, Glass, Instrument Panel, Controls, ROPS |
| Special Tools (Section 99) | 1043-1080 | John Deere Special Service Tools Required by the Procedures in This Manual |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 5080 | ||
| Engine Model | 4045HAT80 | p. 27 |
| Power at Rated Speed (97/68 EEC) | 60 kW (80 hp) | p. 27 |
| Maximum Torque | 325 N·m at 1600 rpm | p. 27 |
| 5090 | ||
| Engine Model | 4045HAT81 | p. 27 |
| Power at Rated Speed (97/68 EEC) | 67 kW (90 hp) | p. 27 |
| Maximum Torque | 365 N·m at 1600 rpm | p. 27 |
| 5100 | ||
| Engine Model | 4045HAT82 | p. 27 |
| Power at Rated Speed (97/68 EEC) | 74 kW (100 hp) | p. 27 |
| Maximum Torque | 375 N·m at 1600 rpm | p. 27 |
| All models | ||
| Engine Displacement | 4530 cm3 (276 cu. in.), 4 cylinders, bore 106.5 mm x stroke 127 mm | p. 27 |
| Intake Valve Clearance | 0.36 mm (0.014 in.) | p. 27 |
| Exhaust Valve Clearance | 0.46 mm (0.018 in.) | p. 27 |
| Slow Idle / Fast Idle | 850-900 rpm / 2425-2475 rpm | p. 27 |
| Rated Engine Speed | 2300 rpm | p. 27 |
| Engine Oil Capacity (with filter) | 8.0 L (2.0 U.S. gal.) | p. 27 |
| Engine Speed for 540 rpm Rear PTO | 1938 rpm | p. 27 |
| Steering Pump Flow Rate (at rated engine speed) | 24.6 L/min (6.5 gpm) | p. 30 |
| 2WD | ||
| Transmission / Hydraulic Oil Capacity | 36 L | p. 729 |
John Deere 5075G-5100G Common Problems This Manual Covers
Engine cranks but loses power under load, or surges and stalls - classic low fuel pressure behavior.
Section 30 walks the fuel system from tank to injection: check for a restricted fuel line, test the fuel transfer pump output, and replace a clogged fuel filter before condemning anything expensive. The pressure test procedure tells you which stage is starving the engine.
Manual Section: Fuel And Air Intake Systems (Section 30) p. 158Coolant disappearing with no external leak, white exhaust, or milky oil - coolant getting into the combustion chamber.
Section 20 covers cylinder head removal, gasket replacement and head inspection for cracks and warpage on the 4045 engine. Catch it early and it is a head gasket job; run it long and you are into a cracked head or washed bearings. The section gives the full inspection sequence.
Manual Section: Engine (Section 20) p. 95Hydraulic valve leaking externally or a function that will not cycle - loader hangs, remote will not move.
Section 70 covers hydraulic valve disassembly, seal replacement and pressure testing. Contaminated fluid and worn seals cause most of it, so the section also gives you the flow and pressure checks to confirm the pump is healthy before you split the valve stack.
Manual Section: Hydraulic System (Section 70) p. 728Steering feels heavy or slow at idle, or wanders under load on the loader models.
Section 60 covers the hydrostatic steering circuit end to end. The book specifies steering pump flow at 24.6 L/min at rated engine speed, so you can flow test the pump against a real number instead of guessing, then work through the steering valve and cylinder checks.
Manual Section: Steering And Brake Systems (Section 60) p. 632Frequently Asked Questions
My tractor is a 5085GF orchard model, not a plain 5085G. Is it actually covered?
Yes. The manual's own model list is wider than the title suggests. It covers 5080G, 5090G and 5090GH, plus the GL low profile (5075GL, 5085GL), GF orchard (5075GF, 5085GF, 5100GF), GN narrow (5075GN, 5085GN, 5100GN) and GV vineyard (5075GV, 5085GV) variants. The specialty machines share the same engine, transmission and hydraulic architecture, and where a variant differs the manual calls it out. p. 27
Which engine does my model have, and are the specs really different between them?
All three power classes use the same 4.53 L four cylinder block with a 106.5 mm bore and 127 mm stroke, rated at 2300 rpm. But the tune is different per model: the 5080 runs the 4045HAT80 at 60 kW (80 hp) with 325 Nm of torque at 1600 rpm, the 5090 the 4045HAT81 at 67 kW (90 hp) and 365 Nm, and the 5100 the 4045HAT82 at 74 kW (100 hp) and 375 Nm. Section 20 gives the rebuild specs, and valve lash is the same across the board: 0.36 mm intake, 0.46 mm exhaust. p. 27
The engine will not crank at all. Does the manual walk me through finding out why?
Yes, and this is where you start before buying a starter. Section 40 covers the electrical system with wiring diagrams and step by step diagnosis: check battery condition and connections first, since corroded or loose terminals cause most no-crank calls, then test the starter solenoid and starter motor in order. Following the sequence keeps you from replacing a $400 starter when the fault was a $2 ground strap. p. 27
Does it cover the Power Reverser transmission, or just the plain mechanical box?
Both, in separate sections. Section 50B handles the mechanical transmissions, Section 50C is dedicated to the 24-12 Power Reverser with its own disassembly, clutch pack and control diagnosis, and Section 50A covers the rest of the drive train - final drives, differential, PTO. Whichever gearbox your tractor left the factory with, the teardown procedure for it is in here. p. 27
What routine service specs are in here - idle speeds, oil capacities, PTO speed?
The numbers you actually set a tractor by: slow idle 850-900 rpm, fast idle 2425-2475 rpm, rated speed 2300 rpm, and 1938 engine rpm for 540 on the rear PTO. Engine oil capacity with filter is 8.0 L, and transmission/hydraulic capacity on a 2WD is 36 L. Section 10 collects the general specs, and each system section repeats the figures you need while you are in there.
