John Deere 5420 is a popular tractor used by farmers around the world. However, like any machinery, it is prone to problems that can affect its performance and reliability.
So what are the most common John Deere 5420 problems? The problem includes
- Transmission issues
- Engine problems
- Hydraulic problems
- Electrical problems
- PTO problems
- 3-point hitch problems, etc.
In addition to that, you will probably notice some problems with the cooling system as well.
In this article, we will discuss the common problems faced by John Deere 5420 owners, their causes, and solutions.
Quick Problems And Their Solutions For John Deere 5420
The table below shows the common problems associated with your John Deere 5420 with solutions.
| Problems | Solutions |
| 1. Engine problems | Change the air filter |
| Check the fuel system for leaks and use high-quality fuel | |
| 2. Transmission problems | Change the transmission fluid and replace it with a high-quality one |
| Also, check the clutch for any wear | |
| 3. Hydraulic problems | Change the hydraulic fluid |
| Check the hydraulic lines for any leaks and seal them with a sealant | |
| Replace the hydraulic filter if it is worn or damaged | |
| 4. Electrical problems | Check the battery for any signs of wear and repair or replace it |
| Inspect the wiring harness for any damage and repair it | |
| Quiz the alternator for proper operation | |
| 5. Cooling system problems | Change the coolant |
| Inspect the radiator for signs of any wear | |
| Check the water pump for proper operation, if it is faulty, fix it | |
| 6. 3-point hitch problems | Use the correct hydraulic lubricant |
| Replace the hydraulic filters | |
| Tighten all the hydraulic fittings and holes so that air will not cause the pump to form bubbles | |
| 7. Power take-off problems | Replace damaged cables |
| Charge the battery if the output reads 12.5 volts or less | |
| Replace the in-line fuse with the exact amperage rating |
John Deere 5420 Problems and Solutions
Some of the common problems associated with John Deere 5420 include;
1. Engine Problems
Example of these engine problems includes low engine power, overheating, hard starting, smoke from the exhaust, and strange and unusual noise from the engine.
Common Causes
- A clogged air filter
- Faulty spark plugs
- Faulty injectors
- Dirty fuel
- Blocked radiator and low coolant levels
- Worn piston rings and blown head gasket
- Damaged crankshaft, bearings, or valves
How To Fix The Engine Problems
To solve John Deere 5420 engine problems, it is essential to perform regular maintenance on the tractor, such as
- Changing the air filter
- Using high-quality fuel
- Check the coolant levels and ensure that the radiator is clean and not obstructed by debris
- Charge the battery, check the fuel system for leaks and blockages and fix them
- Replace every damaged crankshaft, valve, bearing, worn piston and blown head gasket
2. Transmission Problems
Transmission issues include clutch problems, issues with the gearbox, fluid leaks, slipping and shifting gears.
Common Causes
- Worn-out clutch plates
- Low transmission fluid levels
- Faulty gearbox
How To Fix The Transmission Problems
Here’s what to do
- Repair or replace every part leaking transmission fluid
- Change the transmission fluid and replace it with a high-quality one
- Check the clutch for any wear and replace or repair it
- If you’re having difficulty in shifting gears or unusual noises, you should have the tractor inspected by an expert
3. Hydraulic Problems
Here are some of the most common hydraulic problems that can occur with John Deere 5420: Low hydraulic fluid, contaminated fluid, leaks in the hydraulic system, weak or slow hydraulic functions.
Common Causes
- Faulty hydraulic pump
- Contamination can occur from dirt, debris, water, or other substances
- Clogged hydraulic filter
- Leaking hydraulic line
How To Fix The Hydraulic Problems
Here’s how to fix it:
- Change the hydraulic fluid
- Check the hydraulic lines for any leaks
- Replace the hydraulic filter
4. Electrical Problems
Some of these electrical issues have to do with battery and wiring harness problems, such as a weak or dead battery, faulty starter, failed charging system, and electrical shorts.
Common Causes
Some of the causes include;
- Damaged wiring harness or worn or damaged wire insulation
- Faulty alternator: This will prevent the battery from charging
How To Fix The Electrical Problems
Here’s how to get it done;
- Check the battery for any signs of wear and repair or replace it
- Inspect the wiring harness for any damage and ensure proper connections to the right terminals
- Test the alternator for proper operation and replace any damaged alternator
If you notice any further signs of electrical problems like dim lights or difficulty starting the tractor, you should have the tractor inspected by a professional.
5. Cooling System Problems
These problems come in the form of radiator malfunction and water pump issues.
Common Causes
Some common causes of cooling system problems include;
- Clogged radiator
- Faulty or defective water pump
- Leaking coolant system
How To Fix The Cooling System Problems
Here’s how to solve it;
- Change the coolant
- Inspect the radiator for signs of any wear and replace it
- Check the water pump for proper operation and repair or replace any defective water pump
If you notice any further signs of cooling system problems like overheating or leaking coolant, you should consult an expert repairer for inspection.
6. 3-Point Hitch Problems
Here are some common problems that can occur with the 3-point hitch: slow or weak lifting, hitch arms won’t stay in one place, hitch won’t lower and won’t attach to the implement.
Common Causes
Some common causes of 3-point hitch problems include;
- Low hydraulic fluid level
- Clogged hydraulic filter
- Low or contaminated hydraulic fluid
- Improper attachment or adjustment of the hitch arms
- Worn or damaged hitch pins and linkage components will cause hitch arms not to stay in one place
How To Fix The 3 Point Hitch Problems
Here’s how to fix the 3-point hitch problems:
- Fill the hydraulic fluid tank with the correct hydraulic lubricant
- Replace the filters
- Thoroughly tidy the tank in-line strainers
- Tighten all the hydraulic connections, fittings, covers, and holes so that air will not cause the pump to form cavities or bubbles
7. PTO Problem
Power Take-Off (PTO) problem is a common issue with the John Deere 5420 tractor. This can range from the installation of the PTO clutch and in-line fuse.
Common Causes
Some common causes of Power take-off problems include;
- Poor electrical installation
- Insufficient voltage in the PTO shaft for proper operation
- Damaged in-line fuse
How To Fix The PTO Problems
Here’s how to fix the PTO problems:
- Replace damaged cables and clean spoiled terminals
- Charge the battery if the output reads 12.5 volts or less
- Replace the in-line fuse with the exact ampere rating as the former
Conclusion
In this article, I have successfully discussed the common problems associated with the John Deere 5420. The John Deere 5420 is a reliable and efficient tractor that is widely used for various agricultural activities.
However, like any other machine, it is prone to problems that can affect its efficiency. It is important you carry out regular maintenance on the tractor and address any issues as soon as they arise. That way you can keep the tractor running smoothly and also avoid the high cost of repair.
