Part of the John Deere Repair Manuals.
This is the repair side of the John Deere 5R library: one manual covering all six 2008-2014 models - 5080R, 5090R, 5100R and the narrow 5080RN, 5090RN, 5100RN. It walks the full teardown and rebuild of the 4.5L 4045HL284 turbo engine (80, 90 or 100 hp depending on model), the PowrQuad transmission clutch packs, MFWD front axle and final drives, steering, brakes and the hydraulic system with SCVs and rockshaft. What matters is the numbers: assembly torques, valve clearances, rolling drag torque on the differential, hydraulic pressure test values, plus the JD special tool list. If you are splitting one of these tractors or pulling the head, this is the book with the specs.
What's Inside This John Deere 5080R-5100RN Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-30 | Safety Precautions |
| General Information | 31-112 | Specifications, Bolt & Fitting Torques, Fuel & Lubricants, Serial Numbers |
| Engine | 113-131 | 4045 Engine Repair, Cylinder Head, Pistons, Crankshaft, Timing, Assembly Torques |
| Fuel, Air Intake, Cooling and Exhaust Systems | 132-231 | Injection Pump, Injectors, Turbo & Intercooler, Cooling, Exhaust |
| Electrical System | 232-287 | Alternator, Starter, Harness Replacement, Batteries |
| Electronic Control Units | 288-299 | ECU Replacement, Controllers |
| PowrQuad Transmission | 300-551 | PowrQuad Clutch Packs, Gears, Shafts, Valves, Assembly Torques |
| Drive Systems | 552-776 | MFWD, Front Axle, Final Drives, Differential, Rolling Drag Torque |
| Steering and Brakes | 777-855 | Power Steering, Steering Cylinder, Brakes |
| Hydraulic System | 856-964 | Hydraulic Pump, SCV, Rockshaft, Hitch, Pressure Tests, Cylinders |
| Miscellaneous | 965-1093 | Frame, Sheet Metal, Ballast |
| Operator's Cab | 1094-1265 | |
| Special Tools | 1266-1306 | Jd Service Tools |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All models | ||
| Engine model | 4045HL284 | p. 40 |
| Number of cylinders | 4 | p. 40 |
| Valves per cylinder | 2 | p. 40 |
| Bore | 106.5 mm (4.19 in.) | p. 40 |
| Stroke | 127.0 mm (5.00 in.) | p. 40 |
| Displacement | 4.5 L (276 cu.in.) | p. 40 |
| Firing order | 1-3-4-2 | p. 40 |
| Compression ratio | 17.0:1 | p. 40 |
| Valve clearance (engine hot or cold) - Intake valves | 0.36 mm (0.014 in.) | p. 40 |
| Valve clearance (engine hot or cold) - Exhaust valves | 0.46 mm (0.018 in.) | p. 40 |
| Thermostat - Opening temperature | 82°C (180°F) | p. 40 |
| Thermostat - Operating temperature (fully open) | 94°C (202°F) | p. 40 |
| Slow idle speed | 845 to 855 rpm | p. 40 |
| Fast idle speed | 2455 to 2465 rpm | p. 40 |
| Rated engine speed | 2300 rpm | p. 40 |
| Pressure valve in expansion tank cap opens from - Pressure at which high-pressure valve opens | 70 to 90 kPa (0.70 to 0.90 bar; 10 to 13 psi) | p. 40 |
| Pressure valve in expansion tank cap opens from - Max. pressure at which low-pressure valve opens | 10 kPa (100 mbar; 1.5 psi) | p. 40 |
| Cooling system test pressure | 50 to 60 kPa (0.5 to 0.6 bar; 7 to 8.7 psi) | p. 40 |
| Injection pressure | up to approx. 115 MPa (1150 bar; 16679 psi) | p. 40 |
| Hydraulic system pump displacement | 23 cm³ (1.4 in³) or 28 cm³ (1.7 in³) | p. 40 |
| Hydraulic system pressure - min. (standby) | 1400 kPa (14 bar; 203 psi) | p. 40 |
| Hydraulic system pressure - max. | 20600 kPa (206 bar; 2988 psi) | p. 40 |
| Engine cooling system capacity | 16 liters (4.2 U.S.gal.) | p. 40 |
| by model (see range) | ||
| Engine power (97/68/EC) at rated engine speed with viscous fan | 59 kW (80 hp) | p. 40 |
| Engine power (97/68/EC) at rated engine speed with viscous fan | 66 kW (90 hp) | p. 40 |
| Engine power (97/68/EC) at rated engine speed with viscous fan | 74 kW (100 hp) | p. 40 |
| Max. torque at 1600 rpm | 334 Nm (246 lb-ft) | p. 40 |
| Max. torque at 1600 rpm | 376 Nm (277 lb-ft) | p. 40 |
| Max. torque at 1600 rpm | 416 Nm (307 lb-ft) | p. 40 |
| Engines with a power rating of 59 kW (80 hp) | ||
| Charge pressure of air intake system with turbocharger | 64 kPa (640 mbar; 9.3 psi) | p. 40 |
| Engines with a power rating of 66 kW (90 hp) | ||
| Charge pressure of air intake system with turbocharger | 76 kPa (760 mbar; 11 psi) | p. 40 |
| Engines with a power rating of 74 kW (100 hp) | ||
| Charge pressure of air intake system with turbocharger | 90 kPa (90 mbar; 13.1 psi) | p. 40 |
| 5RN series | ||
| Fuel tank capacity | 114 liters (30.1 U.S.gal.) | p. 40 |
| 5R series | ||
| Fuel tank capacity | 130 liters (34.3 U.S.gal.) or 150 liters (39.6 U.S.gal.) | p. 40 |
John Deere 5080R-5100RN Common Problems This Manual Covers
Engine down on power or smoking, suspected head, piston or valve wear at high hours
The Engine section gives the full 4045 top-end and bottom-end overhaul: cylinder head removal, valve work with the 0.36/0.46 mm clearance settings, piston and liner inspection limits, crankshaft and timing procedures, and every assembly torque for the rebuild.
Manual Section: EngineOverheating, coolant loss or a cap that no longer holds pressure
The Fuel, Air Intake, Cooling and Exhaust section covers cooling system repair with the numbers that settle the argument: 50 to 60 kPa system test pressure, 82°C thermostat opening, and 70 to 90 kPa cap high-pressure valve spec, so you test instead of guessing and swapping parts.
Manual Section: Fuel, Air Intake, Cooling and Exhaust SystemsPowrQuad slipping under load or losing a range
The PowrQuad Transmission section walks clutch pack disassembly, plate inspection, gear and shaft removal and valve service, with the assembly torques and setup steps needed to get the packs back together so the repair holds instead of slipping again in a season.
Manual Section: PowrQuad TransmissionMFWD front axle noise, leaking final drive seals or driveline play
The Drive Systems section covers MFWD and front axle teardown, final drive and differential rebuild, including the rolling drag torque procedure for setting bearing preload correctly - the step that decides whether the axle lasts or eats its new bearings.
Manual Section: Drive SystemsFrequently Asked Questions
Does this manual cover error codes and diagnostics for the 5080R/5090R/5100R?
No, and it is worth being straight about this before you buy. Deere splits these tractors into two books: this Repair manual holds disassembly, assembly, torques and clearances, while the separate Diagnostics and Tests manual holds the DTC code tables and circuit diagrams. If your problem is a code on the display, you want the diagnostics book. If you already know what is broken and need to fix it, this is the one.
Are the actual torque specs and clearances in here, or just procedures?
The specs are in here, and that is the main reason to own it. Each section carries its assembly torques - cylinder head, main and rod bearings, PowrQuad shafts, final drive hardware - plus a general bolt and fitting torque chart in the General Information section. Engine data like valve clearance (0.36 mm intake, 0.46 mm exhaust, hot or cold) and firing order 1-3-4-2 are printed where you need them, not scattered.
Does it cover the PowrQuad transmission rebuild?
Yes, there is a dedicated PowrQuad section covering clutch packs, gears, shafts and control valves through full disassembly and reassembly with torques. This is the job where guessing gets expensive - clutch pack stack-up and valve work need the printed procedure. If your tractor slips in a range or loses a gear, this section is what a dealer tech would be working from.
Which engine variants are covered, and does one manual really fit all six models?
All six share the same 4045HL284 four-cylinder, 4.5L (276 cu.in.) turbo engine with a 106.5 mm bore and 127 mm stroke - the models differ mainly in power (59/66/74 kW, so 80/90/100 hp) and the RN narrow chassis. So yes, one repair manual covers the whole family, with the model-specific values like charge pressure and max torque listed per rating.
Can I do hydraulic pressure tests with this manual?
Yes. The Hydraulic System section includes pressure test procedures with the target values, starting from the 1400 kPa (14 bar) minimum standby pressure, plus pump, SCV, rockshaft and hitch repair. You will need a gauge set, and some checks reference JD special tools listed in the Special Tools section, so look those up before you schedule the job.
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