![John Deere 550, 554, 5055B, 600, 604, 650, 654, 700, 704 Repair Manual [Tractors]](https://youfixthis.com/wp-content/uploads/2012/02/Manual_Download-300x300.jpg)
Part of the John Deere Repair Manuals.
This is the complete John Deere factory repair manual (TM4787) for the 5620, 5720 and 5820 tractors. Across 1,152 pages it covers every system on the machine: the 4045 four-cylinder turbocharged diesel and its fuel, air, cooling and exhaust systems; the PowrQuad and PowrQuad Plus transmissions; front-wheel drive clutch, differential, final drives and PTO; hydrostatic steering and brakes; the full hydraulic system including pump, valves, selective control valves and hitch; a detailed electrical section with wiring harness routing, charging circuit and monitoring systems; and the operator cab. Torque values, test pressures and special tool references are called out where they matter so a repair is done to spec the first time.
What's Inside This John Deere 5620, 5720, 5820 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | - | |
| General Information | Specifications, Tune-Up, Predelivery Inspection | |
| Engine | Engine Removal and Installation | |
| Fuel, Air Intake, Cooling and Exhaust Systems | Speed Control Linkage, Fuel System, Air Intake System, Cooling System, Cold-Weather Starting Aid, Exhaust System | |
| Electrical System | Connectors, Wiring Harnesses, Charging Circuit, Starting Motor Circuit, Fuses, Relays and Switches, Monitoring Systems, Electrical Components | |
| PowrQuad and PowrQuad Plus Transmissions | Removal and Installation of Components, Transmission Shift Controls, PowrQuad Module, Reduction Gear, Range Transmission | |
| Drive Systems | U-Jointed Shafts and Torsion Damper, Front-Wheel Drive Clutch, Differential, Hydraulic Pump Drive, Final Drives, Rear PTO, Front PTO | |
| Steering and Brakes | Hydrostatic Steering, Brake Valve, Rear Brakes, Handbrake, Hydraulic Trailer Brake, Air Brakes | |
| Hydraulic System | Controls, Hydraulic Pump, Valves, Hitch, Selective Control Valves and Couplers | |
| Miscellaneous | Front and Rear Wheels, Trailer Mounting and Swinging Drawbar, Pick-Up Hitch, Front Hitch, Front Loader | |
| Operator's Cab | Controls and Instruments, Air-Conditioning System, Heating System, Seats, Parts for Electronic Hitch Control | |
| Special Tools (Dealer-Fabricated) | Special Tools Available As Spare Parts |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 5620, 5720, 5820 | ||
| Engine | John Deere 4045 four-cylinder turbocharged diesel | |
| All models | ||
| Rated Engine Speed | 2300 rpm | |
| Slow Idle (Mechanical Actuation) | 875 +/-50 rpm | |
| Fast Idle (Mechanical Actuation) | 2460 +50 rpm | |
| Cooling System Test Pressure | 50-60 kPa (7-8.7 psi) | |
| Expansion Tank Cap Pressure Valve (High) | 70-90 kPa (10-13 psi) | |
| Front Engine Support to Block Torque (M16 Cap Screws) | 230 N.m (170 lb-ft) | |
| Engine Mounting Screws Torque | 100 N.m (74 lb-ft) | |
| Rear Axle Wheel Bolt Torque | 500 N.m (370 lb-ft) | |
| 5720 Tractor | ||
| Turbocharger Charge Pressure | 66 kPa (9.6 psi) | |
| 5820 Tractor | ||
| Turbocharger Charge Pressure | 72 kPa (10.4 psi) | |
John Deere 5620, 5720, 5820 Common Problems This Manual Covers
Alternator burns out quickly or overheats after extended field operation
This is the most-reported failure on these tractors. The cause is typically a regulator breakdown that allows excessive current draw, sometimes combined with a wiring harness connector that has corroded above the engine. The Electrical System section covers charging circuit diagnosis, alternator removal and regulator testing. Inspect all harness tie-band fasteners and connector pins before fitting a new alternator, otherwise the replacement will fail for the same reason.
Manual Section: Electrical SystemLow oil pressure warning at operating temperature, sometimes with ticking noise
Worn oil pump gears or a blocked oil pump cooler are the common cause. The Engine section details oil pump removal and inspection. Check the cooler passages for sludge first - blockage causes the pump to cavitate without being worn out - and replace pump gears to factory clearance specs if wear is confirmed before returning the tractor to heavy field duty.
Manual Section: EngineIntermittent electrical faults that are hard to repeat on the bench
Loose or missing wiring harness tie bands allow cables to abrade against the frame, causing conductors to short intermittently only under vibration or heat. The Electrical System section covers harness routing and fastener placement. Inspect the full harness run, replace any worn tie bands, and check connector pins for fretting corrosion before chasing a ghost electrical fault in the components.
Manual Section: Electrical SystemRough or delayed shifts through PowrQuad range, especially cold
Delayed or harsh shifts typically come from worn shift solenoids, a faulty PowrQuad module, or contaminated transmission fluid that has thickened. The PowrQuad and PowrQuad Plus Transmissions section covers shift control removal, module testing and range transmission disassembly. Change the fluid and filter first; if shifts do not return to normal, test the solenoids and module per the diagnostic steps before pulling the transmission.
Manual Section: PowrQuad and PowrQuad Plus TransmissionsFrequently Asked Questions
What engine does the John Deere 5620, 5720 and 5820 use?
All three tractors run a John Deere 4045 four-cylinder turbocharged diesel. Rated speed is 2300 rpm, slow idle is 875 rpm and fast idle is 2460 rpm. The Engine section covers removal, installation and all lower engine repair procedures for this unit.
Why does the charging warning light flicker or stay on at operating temperature?
This usually points to an alternator regulator failure or a loose connection in the charging circuit that only shows up once the harness reaches operating temperature. The Electrical System section covers the full charging circuit, alternator service and wiring harness routing so you can check connectors and test the regulator before replacing parts.
What are the engine mounting torque specs for the 5620, 5720 and 5820?
The General Information section gives the key values: front engine supports to engine block M16 cap screws torque to 230 N.m (170 lb-ft), engine mounting screws to 100 N.m (74 lb-ft), and front engine supports to main frame cap screws to 95 N.m (70 lb-ft). Rear axle wheel bolts torque to 500 N.m (370 lb-ft).
How do I remove and service the PowrQuad transmission?
The PowrQuad and PowrQuad Plus Transmissions section walks through full removal and installation of all components, including the PowrQuad module, transmission shift controls, reduction gear and range transmission. Read through the Drive Systems section alongside it since the U-joint shafts and hydraulic pump drive connect to the transmission assembly.
Does this manual cover the hydraulic hitch and selective control valves?
Yes. The Hydraulic System section covers the hydraulic pump, control valves, hitch, and all selective control valves and couplers. The Operator's Cab section also includes the parts for electronic hitch control if the fault is in the cab-side electronics rather than the hydraulic hardware.
