DOOSAN Solenoid Valve Replaced
Product Description: Doosan Solenoid Valve for Hydraulic Control (1931612) Doosan excavators rely on hydraulic solenoid valves to control flow, pressure, and direction. When a valve fails, the machine may lose power, move erratically, or stop completely. The Doosan solenoid valve replaced by Flying Bull (OE No. 1931612) is a direct replacement hydraulic valve for Doosan excavators and other construction machinery. The 1931612 hydraulic valve is a solenoid-operated directional or pressure control valve. It is designed for oil media under ordinary pressure. The valve is 100% brand new, manufactured in Zhejiang, China, and backed by a 1‑year warranty. Delivery takes 5–7 working days. Proper Replacement Procedure for the Doosan Hydraulic Valve 1931612: Step 1: Preparation Confirm the Model: Verify that your old valve matches the new 1931612 in model number, specifications, voltage, and thread size. Do not rely on machine model alone. Gather Tools: Prepare wrenches, screwdrivers, and clean plugs or caps for hydraulic lines. Wear Safety Equipment: Put on gloves and safety glasses. Hydraulic oil under pressure can inject through skin – a serious medical emergency. Step 2: Eliminate System Pressure (Critical for Safety) Idle the Engine: Start the Doosan excavator and set the engine to idle. Move the control handles to low-speed working mode. Empty the Cylinder: Loosen the cylinder head on the attachment (bucket, arm, or blade). Run the cylinder through its full stroke to relieve stored pressure. The attachment should not lift or move when you move the controls. Turn Off the Engine: After completing the pressure relief, shut down the engine completely. Step 3: Remove the Old Hydraulic Valve Find the Location: Open the engine room or access panel. Locate the 1931612 valve that needs replacement. Remove Tubing Connections: Use a wrench to disconnect the hydraulic lines from the old valve. Immediately plug each open port with a clean plug or cap. This prevents oil spills and stops dirt from entering the system. Remove the Valve: Use a wrench to remove the mounting nut or screws. Carefully pull the old hydraulic valve out of its cavity or off its mounting surface. Step 4: Install the New Hydraulic Valve 1931612 Clean the Installation Area: Before installing the new valve, wipe the mounting surface and cavity clean. Remove any old seal material, dirt, or oil residue. Install the New Valve: Place the new Doosan solenoid valve in the original position. If it is a cartridge valve, screw it in by hand first, then tighten to the recommended torque. If it is a subplate-mounted valve, install new seals and tighten mounting screws evenly. Reconnect Hydraulic Lines: Remove the plugs from the tubing ports. Reconnect the hydraulic lines to the new valve. Tighten fittings to specification – do not overtighten. Check for Leaks: Start the engine and let it idle. Operate the hydraulic functions slowly. Look for oil leaks around the new valve and fittings. If leaks appear, tighten slightly or replace seals. After Installation: Run the excavator through its full range of motion. Confirm that the machine responds correctly to controls. If the old valve failed due to contaminated oil, change the hydraulic fluid and filters to protect the new valve. For equipment owners and repair shops, keeping a spare Doosan solenoid valve replaced 1931612 in inventory reduces downtime.
Product Introduction
Products Description
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OE NO.: 1931612 |
Media: Oil |
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Warranty: 1 YEAR |
Condition: New, 100% Brand-new |
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Place of Origin: Zhejiang, China |
ltem: Solenoid |
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Brand Name: FLYING BULL |
Quality: High-Quality |
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Delivery: 5-7 Working Days |
Pressure: Ordinary Pressure |
Hydraulic valve 1931612 Construction machinery parts
Replacing the Doosan excavator hydraulic valve 1931612 process:
1. Preparation
① Confirm the model: First, confirm the model and specification of the hydraulic valve that needs to be replaced to ensure that the new hydraulic valve 1931612 is fully matched with the old hydraulic valve.
② Tools: Prepare necessary tools, such as wrenches, screwdrivers, and plugs, to facilitate removal and installation.
③ Safety: Wear protective equipment, such as gloves and goggles, to ensure safety during operation.
2. Eliminate stress
① Idle engine: Set the excavator engine to idle state and set the handle to low speed working mode.
② Empty cylinder: loosen the cylinder head of the excavator and empty it, so that the excavator cannot be lifted and lifted, so as to discharge the internal pressure of the hydraulic system.
③ Turn off the engine: After completing the emptying operation, turn off the engine.
3. Remove the old hydraulic valve
① Find the location: Open the excavator engine room and find the location of the hydraulic valve 1931612 that needs to be replaced.
② Remove the tubing joint: remove the tubing joint of the original hydraulic valve with a wrench, and plug the pipe mouth with a plug to prevent oil leakage.
③ Remove the hydraulic valve: Remove the nut on the hydraulic valve with a wrench, and carefully remove the hydraulic valve.
4. Install the new hydraulic valve
① Clean the installation position: Before installing the new hydraulic valve, clean the installation position to ensure that there are no impurities and oil.
② Install the new hydraulic valve: Install the new hydraulic valve in the original position and fix it with nuts.
③ Remove the plug: Remove the plug on the previously blocked tubing joint.
Company Introduction
Frequently Asked Questions (FAQs)
1. What is the OE number and basic application of this Doosan solenoid valve?
The OE number is 1931612. This hydraulic solenoid valve is used in Doosan excavators and other construction machinery. It controls hydraulic oil flow, pressure, or direction depending on the circuit.
2. What should I do before removing the old hydraulic valve?
You must eliminate system pressure first. Idle the engine, empty the cylinder (run it through its stroke), then turn off the engine. Failure to relieve pressure can result in hot oil spraying out under force, causing serious injury.
3. Why do I need to plug the hydraulic lines after disconnecting them?
Plugging the open ports serves two purposes: (1) It prevents hydraulic oil from leaking onto the machine and ground – an environmental and slip hazard. (2) It stops dirt, dust, and debris from entering the hydraulic system. Contaminated oil is a leading cause of valve failure.
4. How do I know if the new 1931612 valve matches my old one?
Compare the model number, OE number (1931612), voltage, thread size, and cavity type. Do not rely only on the excavator model – different machines and even different production years may use different valves. When in doubt, contact your supplier with photos of the old valve.
5. What tools do I need to replace this solenoid valve?
Basic tools include: wrenches (metric sizes common on Doosan), screwdrivers, clean plugs or caps for lines, and a torque wrench (for proper tightening). Also have gloves and safety glasses.
6. How do I test the new valve after installation?
Start the engine and let it idle. Slowly operate each hydraulic function (boom, arm, bucket, swing, travel). Listen for unusual noises and look for oil leaks around the new valve. If the machine responds normally and no leaks appear, test under load at working pressure.
7. Does the Doosan solenoid valve replaced 1931612 come with a warranty?
Yes. Flying Bull provides a 1‑year warranty against manufacturing defects. Damage caused by contaminated fluid, incorrect installation (wrong torque, missing seals), overpressure, or voltage issues is not covered. Always use clean hydraulic oil and follow proper replacement procedures.
8. Can I install this valve myself, or do I need a mechanic?
If you have basic mechanical skills and follow the pressure relief procedure, you can replace the valve yourself. However, if you are not comfortable working with hydraulic systems – or if the machine is under warranty – hire a qualified mechanic. Incorrect installation can damage the valve or cause machine malfunction.
9. Is this valve a direct replacement for the original Doosan part?
Yes. This valve is manufactured to replace the original Doosan 1931612. It matches the original specifications for flow, pressure, voltage, and mounting. Always verify fitment before ordering.
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