The following technical information allows the reader to know more about the thermostat and its functioning within the Forklift cooling system of an internal combustion engine. Besides, you will find the selection criteria to acquire the correct replacement for your thermostat and some tips about installing a new thermostat in your forklift cooling system.
Forklift Thermostat Purpose
The thermostat is a valve that opens or closes depending on the temperature of a fluid. This device is an essential element within the forklift cooling system, and its function is to allow or block the outlet of coolant from the engine body to theradiator.
Components of a Cooling System Thermostat
The following parts compound the thermostat:
Main valve (or primary valve).
By-pass valve (or secondary valve).
How does a Thermostat work in a Forklift?
This device is part of an engine cooling system and communicates the engine body outlet with the radiator inlet. When an internal combustion engine is running, heat is generated, and its temperature increases. The cooling system circulates coolant around the engine to avoid overheating. This device acts as a valve. The thermostat charge cylinder contains wax inside, which is a material with a set melting point. So, heat exchange is produced between the valve and the coolant circulating. As the coolant gets hotter, the wax melts.
While the coolant is still cold, the wax remains solid, and the by-pass valve is open. It permits that coolant keeps circulation in the engine body. When the fluid temperature rises, the wax begins to melt; Gradually, the by-pass valve closes, and the main valve opens. In this way, the hot fluid passes through a hose towards the radiator.
When thewater pump inserts cold coolant to circulate in the engine body, the temperature decreases, and the thermostat valve returns to its initial position ( the by-pass valve opens and the main valve closes).
How to Choose the Correct Replacement for your Forklift Thermostat
Be sure that the specifications of the new thermostat match the old one. Some of the more important of these are:
The opening temperature measure.
The maximum outside diameter (OD).
Height ( its total height but also its height for the radiator and engine side).
Is the Forklift Truck Thermostat damaged?
If the thermostat is defective, the cooling system will not work well. The most evident problem is engine overheating, which occurs a few minutes after running. Another sign that something's wrong with your thermostatic valve is the incorrect ( or fluctuating) temperature changes shown by the forklift gauge.
When Should a Forklift Thermostat be Replaced?
Over time, however, the thermostat can become less effective, leading to an overheated engine. If you notice that your forklift's engine is running hotter than usual, it's important to have the thermostat checked by a qualified technician. The most common reasons why the thermostat of a forklift is replaced are:
Coolant is leaking from the thermostat. It happens when the device keeps stuck and cannot open; commonly, the leaking is found in the housing or the mounting surface. If this issue occurs in a recently installed thermostat, the problem could be caused by a faulty installation. But also it can be caused by a defective thermostat gasket.
The thermostat is entirely rusted. When the material of the thermostat does not have resistance against the properties of the coolant, the device can get rust. The air can also generate corrosion (which commonly comes from a defective radiator cap). A suitable new thermostat must replace the damaged one to solve the problem. In addition, it is recommended to check the radiator cap.
Thermostat clogged. It is caused by a coolant that is contaminated or non-compatible. It generates a sludge accumulation around the main valve and avoids the correct functioning of the device.
How To Install a New Thermostat in your Forklift
First off, it is recommended to get a new gasket in addition to a new thermostat. The gasket function is to seal the connection between the engine and the radiator hose. In this way, you can avoid future problems by using the old gasket. Follow the below steps for the thermostat replacement:
Be sure that the engine is cold.
Locate where your thermostat is. As a reference, remember it is located inside the inlet upper-radiator hose.
Pull off the radiator hose. Before doing this- for a clean working environment- put a recipient to catch the coolant containing the hose.
Remove the thermostat housing.
Remove the old gasket.
Remove the old/damaged thermostat.
Place the new thermostat and gasket.
Install the thermostat housing and the radiator hose again.
Additionally, we suggested refilling the coolant and a correct bleed of the cooling system, refilling of coolant, and replacing radiator hose clamps.
Find your Forklift Truck Thermostat Online at Lift Parts Warehouse
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Here at Lift Parts Warehouse, we know the importance of keeping your forklift truck running in top condition. That’s why we carry a wide selection of thermostats and other cooling system components so you can easily find the replacement part you need to get your truck back up and running. If you have any questions about which thermostat is right for your truck or how to install it, don’t hesitate to buy with us. We’re always happy to help!