John Deere 4520 Tractor Parts
The John Deere 4520 tractor, manufactured from 1971 to 1972, was a popular choice for farmers seeking a reliable and versatile machine. Powered by a robust John Deere diesel engine producing around 62 horsepower at the PTO, the 4520 delivered ample power for a variety of agricultural tasks. Its straightforward design and dependable performance cemented its place as a workhorse on farms across the country.
The John Deere 4520 was introduced in 1971 as part of the John Deere 20 series, replacing earlier models and offering improvements in power and operator comfort. Production ran for only two years, ending in 1972. This tractor features a John Deere 4.0L (244 ci) 4-cylinder diesel engine, delivering approximately 71 engine horsepower and 62 PTO horsepower. The engine's robust design contributed to the tractor's reliability. The 4520 primarily featured a collar-shift transmission with 8 forward and 2 reverse gears, providing a good range of speeds for various field operations. It came standard with a 540 RPM PTO, offering power take-off capabilities for implements. The hydraulic system provided a flow rate of approximately 19 GPM, sufficient for operating hydraulic cylinders on implements. The 4520 featured a Category II 3-point hitch with a lift capacity of around 4,200 lbs, enabling it to handle a wide range of implements. Farmers commonly used the 4520 for row crop work, hay baling, livestock operations, and light tillage. Compared to smaller models in the John Deere lineup, the 4520 offered significantly more power and hydraulic capacity, making it suitable for larger farms and more demanding tasks.
Specifications
| Engine | John Deere 4.0L Diesel 71 HP |
|---|---|
| PTO HP | 62 HP @ 540 RPM |
| Transmission | Collar-Shift 8F/2R |
| Hydraulics | 19 GPM, 2 remotes |
| 3-Point Hitch | Category II, 4200 lbs |
| Fuel Capacity | 25 gallons |
| Weight | 6,440 lbs |
| Years Produced | 1971-1972 |
Maintenance Tips
- Engine Oil & Filter: Change the engine oil and filter every 125-250 hours of operation, using the recommended oil type (e.g., SAE 15W-40) and a high-quality filter to ensure proper lubrication and engine protection.
- Hydraulic System: Inspect the hydraulic fluid level regularly and change the hydraulic filter and fluid every 500 hours to prevent contamination and maintain optimal hydraulic performance. Use John Deere Hy-Gard or equivalent fluid.
- Fuel System: Use clean, high-quality diesel fuel and regularly check/replace the fuel filter to prevent clogging and maintain efficient engine operation. Consider using a fuel additive during cold weather to prevent gelling.
- Seasonal Storage: Before storing the tractor for an extended period, drain the fuel tank, add fuel stabilizer, and run the engine briefly to circulate the treated fuel through the system. Disconnect the battery and store it in a cool, dry place.
History & Background
The John Deere 4520 was a key part of the John Deere's '20' series tractors introduced in the early 1970s. While its production run was brief, the 4520 represented a significant upgrade in power and capability compared to earlier models. This model helped solidify John Deere's reputation for building reliable and powerful agricultural tractors.
Frequently Asked Questions
What engine is in the John Deere 4520?
The John Deere 4520 is powered by a John Deere 4.0L (244 ci) 4-cylinder diesel engine producing approximately 71 horsepower.
What is the PTO horsepower on a 4520?
The PTO horsepower rating on the John Deere 4520 is 62 horsepower at 540 RPM.
What oil filter fits the 4520?
A common oil filter for the John Deere 4520 is a John Deere AR50041 or cross-references to Wix 51794 or Fram PH3600. Always verify compatibility with your specific tractor.
What are common parts needed for the 4520?
Common wear parts for the John Deere 4520 include engine oil filters, fuel filters, air filters, hydraulic filters, belts (fan belt, alternator belt), hydraulic cylinder seals, steering components (tie rod ends), and clutch components (clutch disc, pressure plate).

RE29603 - Trans Disc: 13"
SKU: RE29603
103 in stock

R55184 - PTO (7/16") Bolt
SKU: R55184
1224 in stock

R43418 - Clutch Lever Pin
SKU: R43418
1030 in stock

R33550 - PTO Lever
SKU: R33550
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R26637 - Outer Clutch Plate / Cover Spring
SKU: R26637
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JD9449 - Pilot: .669" I.D. Bearing
SKU: JD9449
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AT17464 - Trans Release (greaseable) Bearing
SKU: AT17464
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AR43065 - Release (sealed) Bearing
SKU: AR43065
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TY26545 - Yellow Vinyl Seat Cushion Kit; 3 Piece
SKU: TY26545
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SBK400 - Seat Bracket Kit
SKU: SBK400
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R27441 - Washer
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R26876 - Shaft Lower Seat
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R26436 - 4 per bag Seat Roller
SKU: R26436
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AR60029 - Seat Arm
SKU: AR60029
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AR59680-6 - YLW Steel Base Back Cushion
SKU: AR59680-6
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AR44763-6 - YLW Steel Base Bottom Cushion
SKU: AR44763-6
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AR34267-6 - YLW Steel Upper Back Cushion
SKU: AR34267-6
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AL117332 - Vinyl Yellow Seat Bottom Cushion
SKU: AL117332
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B1AF180 - TORO 1083816/CA9269SY AIR FILTER
SKU: B1AF180
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