Part of the John Deere Repair Manuals.
This is the factory John Deere technical manual (TM1553) covering the 4475, 5575, 6675 and 7775 skid steer loaders as one set. The four machines step up in power from 31 hp on the 4475 to 49 hp on the 7775, all turning 3000 rated rpm, and the manual lists the engine, capacity, and adjustment values per model. Beyond the engine it carries the hydrostatic drive, hydraulics, electrical, steering, brakes, and the optional backhoe group, so a shop running more than one frame size in this family can work them all from a single book.
What's Inside This John Deere 4475, 5575, 6675, 7775 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | Service and Operating Safety, Support and Lift Procedures | |
| Specifications and Information | Power by Model, RPM Settings, Oil and Coolant Capacities, Torque Charts | |
| Engine (Diesel) | Diesel Engine Service, Fuel System, Idle and No-Load RPM, Oil Capacity | |
| Electrical | Charging and Starting Circuits, Relays, Instrument Panel, Wiring | |
| Power Train | Final Drive, Axles, Drive Components | |
| Power Train (Hydrostatic) | Hydrostatic Pumps and Motors, Charge Circuit, Drive Diagnosis | |
| Steering | Steering Controls and Linkage, Neutral Adjustment | |
| Brakes | Park Brake Mechanism, Brake Disc and Pads, Hydraulic Actuation, Drag Diagnosis | |
| Hydraulics | Boom and Bucket Circuits, Couplers, Relief Settings, Load-Hold Diagnosis | |
| Backhoe | Backhoe Boom, Dipperstick and Bucket Cylinders, Swing and Stabilizer Circuits, Control Valve | |
| Miscellaneous | Operator Station, Attachments, General References |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 4475 | ||
| Net power (4475) | 23 kW (31 hp) @ 3000 rpm | |
| 5575 | ||
| Net power (5575) | 27.3 kW (36.6 hp) @ 3000 rpm | |
| 6675 | ||
| Net power (6675) | 31 kW (42 hp) @ 3000 rpm | |
| 7775 | ||
| Net power (7775) | 37 kW (49 hp) @ 3000 rpm | |
| all models | ||
| Rated rpm | 3000 | |
| Fast idle (no load) | 3125-3175 rpm | |
| Slow idle (no load) | 900-1000 rpm | |
| 4475, 5575 | ||
| Engine oil capacity with filter (4475 / 5575) | 7.3 L (7.7 qt) | |
| Coolant capacity (radiator and block) | 10.3 L (10.8 qt) | |
| 6675, 7775 | ||
| Engine oil capacity with filter (6675 / 7775) | 8.4 L (8.9 qt) | |
John Deere 4475, 5575, 6675, 7775 Common Problems This Manual Covers
Engine starts in service mode but dies instantly in start or run; panel dead
Work the starting and safety circuit, not the engine. The electrical section lays out the relays, safety interlocks, and the run-power path so you can test where the signal is lost when the key moves to run. A dead panel at the same time usually means a shared power or ground fault, which the wiring lets you trace to the connector rather than replacing relays at random.
Manual Section: ElectricalHydraulic system loses pressure or the bucket will not hold load
Confirm the relief pressures against the specifications and inspect the quick couplers and circuit routing first, since worn or mismatched couplers and contamination are the usual cause. The hydraulics section gives the test sequence so you can tell a valve or coupler leak-down from a failing pump before any major teardown.
Manual Section: HydraulicsFlickering instrument lights and intermittent electrical faults
Intermittent lighting and gauge faults are typically connector, ground, or charging issues. Use the charging-system and wiring procedures to verify alternator output and check the grounds and harness connections. Cleaning and securing the suspect connections found this way clears most of these faults without new components.
Manual Section: ElectricalFrequently Asked Questions
How much power does each John Deere 4475, 5575, 6675 and 7775 make?
Net power runs 31 hp on the 4475, 36.6 hp on the 5575, 42 hp on the 6675, and 49 hp on the 7775, all at 3000 rated rpm. Fast idle is 3125-3175 rpm and slow idle is 900-1000 rpm across the range. These are in the engine specifications.
Why does my skid steer run in service mode but die when switched to start or run?
That pattern points at the start circuit, a relay, or a safety interlock rather than the engine itself. The electrical section gives the starting and safety circuit so you can test the relays, switches, and connections in order and find where the run signal drops out instead of swapping parts blind.
What causes the hydraulics to lose pressure or not hold load in the bucket?
Common causes are worn or wrong couplers, contamination, or a relief setting out of spec. Use the hydraulics section to confirm the relief pressures and check the couplers and circuit routing before opening the pump. Load that bleeds down under hold usually traces to the valve or a coupler, not the pump.
Does this manual cover the backhoe attachment?
Yes. TM1553 includes a Backhoe group covering the optional backhoe service and its hydraulics, in addition to the loader systems. If your machine is fitted with the backhoe, the attachment procedures are in the same book.
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