Solenoid Arcing For Belarus Tractors: Diy Guide

The Belarus 8345 tractor was produced between 1996 and 1999 and is a row-crop tractor with a 14-speed partially synchronized transmission. While there is limited information on how to arc a solenoid on this specific tractor model, there are some general insights on bypassing or working with solenoids in tractors that may be useful. One suggestion is to use a screwdriver across the two heavy terminals on the solenoid to create a temporary connection, although this may cause a lot of sparks. Another option is to pull start the tractor if it is possible to do so without causing any damage. It is also important to consider the voltage requirements of the tractor, as some tractors operate on 12 volts while others require 24 volts.

How to bypass the solenoid

To bypass the solenoid on a Belarus 8345 tractor, you can try the following methods:

Method 1: Using a Screwdriver

• Put a screwdriver across the two heavy terminals on the solenoid.
• This will create a temporary connection and should make the engine spin.
• Caution: This method can cause a lot of sparks, so it is not recommended if the batteries are being charged.

Method 2: Pull-Starting

• Check if the engine is seized up.
• If it is not seized, you can try pull-starting the tractor.
• This method has worked for other Belarus tractor models (825) when the solenoid went bad or the batteries were dead.

Method 3: Bypassing the Parallel Switch

• This method involves bypassing the parallel switch between the batteries and installing a 12-volt starter.
• The tractor starts on 24 volts and charges on 12 volts.
• By bypassing the parallel switch, you can get the tractor running without relying on the solenoid.

Method 4: Using Jumper Cables

• Use jumper cables to connect from the positive side of the battery to the starter terminal post.
• Ensure that the parking brake is set, the gear shift is in neutral, and you are in the seat to engage the safety switches.
• This method bypasses the solenoid and allows you to start the tractor temporarily.

Please note that bypassing the solenoid is a temporary solution, and for long-term use, it is recommended to replace the solenoid with a new one.

Tractor won't start

If your Belarus 8345 tractor won't start, there are a number of things you can check and troubleshoot to get it running again. Here are some detailed steps to guide you through the process:

Step 1: Check the Battery and Electrical System

• Ensure that the battery is fully charged and in good condition. Check the battery terminals for any signs of corrosion or loose connections. Clean the terminals if necessary and make sure the connections are tight.
• With the key off, check the voltage at the battery. It should read between 12 and 12.6 volts. If it's significantly lower, the battery may be faulty or discharged.
• If the battery seems fine, move on to checking the solenoid. The solenoid is responsible for engaging the starter when you turn the key, and it can sometimes fail or develop issues.

Step 2: Check the Solenoid

• Locate the solenoid, which is usually mounted on the starter or nearby. On the Belarus 8345, it's typically located on the left side of the engine compartment.
• Check the small wire that goes to the solenoid. With the key in the 'start' position, this wire should have battery voltage. If it doesn't, there may be an issue with the ignition switch or wiring.
• Try tapping lightly on the solenoid with a small hammer or screwdriver handle while someone attempts to start the tractor. Sometimes, a stuck or sluggish solenoid can be temporarily jolted into action this way.

Step 3: Check the Fuel System

• Ensure that the fuel tank is filled with clean, fresh diesel fuel. Contaminated or old fuel can cause starting issues.
• Bleed the fuel system if air has entered the lines. There should be a fuel bleed screw or valve that you can open to release any trapped air.
• Check the fuel filters for any signs of clogging or contamination. Replace them if necessary.
• Confirm that the fuel lift pump is operational and providing adequate pressure. This pump is responsible for delivering fuel to the injection system.

Step 4: Check for Other Common Issues

• Make sure that the tractor is in neutral or park when attempting to start. Some tractors have a safety feature that prevents starting unless the transmission is in a neutral state.
• Inspect the tractor's safety features, such as the seat switch and/or PTO (power take-off) switch, to ensure they are properly engaged. These switches can sometimes interrupt the starting circuit if they're not in the correct position.
• Check the engine for any obvious mechanical issues, such as loose or damaged belts, leaking fluids, or physical damage.

Step 5: Consult a Professional

If you've gone through these steps and your Belarus 8345 still won't start, it's advisable to consult a professional tractor mechanic or authorized Belarus service center. They will have the expertise and tools to diagnose and repair more complex issues.

Solenoid wiring

Solenoids are an integral part of any tractor, including the Belarus 8345, and proper wiring is essential for their functioning. Solenoid wiring can be a complex task, and it's important to understand the underlying principles and safety precautions before attempting any repairs or modifications. Here's a detailed guide to solenoid wiring in the context of the Belarus 8345 tractor.

The starter solenoid in the Belarus 8345 tractor plays a crucial role in the electrical system. It acts as a high-current switch, connecting the battery to the starter motor when the ignition key is turned. This closed circuit allows electrical current to flow, cranking the engine and starting the tractor. The solenoid also has a built-in electromagnetic component that engages the starter drive with the flywheel.

To properly wire a solenoid, it's important to identify the different terminals and their functions. Typically, a solenoid will have two large electrical connection bolts. One bolt connects to the tractor's battery, providing the power source, while the other bolt connects to the starter motor, which initiates the cranking process. Inside the solenoid, there is usually a smaller terminal with a wire connected to the solenoid coil. This coil, when energised, completes the circuit, allowing current to flow from the battery to the starter motor.

It's important to note that the solenoid also has a ground circuit connected to the starter and solenoid assembly. This ground connection is essential for the safe operation of the electrical system. Additionally, there may be additional smaller terminals within the solenoid that serve specific functions, such as providing temporary power or bypassing an ignition resistor. Understanding these connections is crucial for effective troubleshooting and maintenance.

When wiring the solenoid, it's imperative to use the correct gauge of wire for each connection. Using wires that are too thin can lead to excessive voltage drop and insufficient power delivery to the solenoid. This, in turn, may result in the solenoid failing to engage the starter motor. It is also important to ensure that all connections are clean, tight, and free of corrosion to maintain optimal electrical conductivity.

In some cases, it may be necessary to bypass the solenoid temporarily to start the tractor. This can be done by creating a temporary connection across the two heavy terminals on the solenoid using a screwdriver. However, caution must be exercised as this method can produce a lot of sparks and may not be safe if the batteries are being charged. Therefore, it is generally recommended to address any solenoid issues by repairing or replacing the component rather than attempting to bypass it on a permanent basis.

Compatible replacement solenoids

When looking for a replacement solenoid for your Belarus tractor, it is important to ensure compatibility with your tractor model. Here are some compatible replacement solenoids for various Belarus tractor models:

RAREELECTRICAL 24V Starter Solenoid

This solenoid is compatible with several Belarus tractor models, including the 822, 825, 900, 902, 905, 920, 922, and 925. It replaces Belarus OEM numbers 20.3708800, P27976, and 203708800. It operates at 12 volts and has three terminals. This option is ideal for those seeking a small business brand, as it is offered by a small business.

RAREELECTRICAL 12V Starter Solenoid

This solenoid is compatible with a range of Belarus tractor models, such as the 400A, 400AN, 405A, 405AN, 420A, and 425AN. It replaces the Belarus ST212-3708800 unit. It features a voltage of 12 volts and has three terminals. This solenoid is also suitable for CAT and MAN tractors, making it a versatile option.

Tractor Parts ASAP 24V Starter Solenoid

This solenoid is compatible with an extensive list of Belarus tractor models, including the 505, 525, 800, 820, 822, 825, 922, 925, 5111, 5145, and 8345. It replaces Belarus OEM number 20-3708800 and manufacturing numbers 6699-901 and P27976. It is designed to fit 24V original starters 20.3708 and 202.3708. This option is ideal for those seeking a cost-effective solution, as it offers savings of up to 75% in the clearance section.

All States Polarity Relay

While not a solenoid, this polarity relay is a compatible electrical replacement part for the Belarus 8345 tractor model, as well as many other models in the range. It replaces Belarus OEM number 86322. It is important to note that electrical parts like this one are usually non-returnable.

Tractor specifications

The Belarus 8345 tractor is a row-crop tractor, mainly used for agricultural purposes. It was manufactured and sold between 1996 and 1998, with a price of $23,570. This tractor has a 4.7L 4-cylinder diesel engine, which is liquid-cooled. The transmission is 14-speed partially synchronised, with 14 forward and 4 reverse gears. There are seven gears (1-7) in two ranges (low/high). Synchronised shifting is available in gears three to seven.

The tractor's power take-off (PTO) is 540@2106 / 1000@2310. The wheelbase is 96 inches, and the hitch lift capacity is 4366 lbs. The cooling capacity is 5 gallons, and the fuel tank can hold 34 gallons. The standard front tyre size is 14.2-20, and the rear is 16.9-38.

The Belarus 8345 has a 24-volt electrical system. The solenoid is located between the dual batteries and is used to switch between 12 and 24 volts. This setup allows the tractor to start on 24 volts and then charge on 12 volts.

Frequently asked questions