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Did you know that employers in the United States spend more than seven billion dollars to compensate for work-related injuries, including cumulative trauma disorders arising from struggling with immobile workplace furniture? If you are such a business owner, then do not be alarmed – the simplest solutions often work. Adding chair casters to your office chairs may be all you need to do to lessen your employees’ stress and improve their productivity.

Smooth-wheeling chair casters can allow your employees to multitask without strain – they can go from working on the computer to answering the phone to sliding to their files with just a slight push, without ever getting up. Best of all, chair casters make it easier to pull in and out of a chair – your employees never have to lift the chair and risk pulling a muscle.

There are many kinds of casters, but the two most important distinctions are carpet casters and hard-flooring casters. Your choice should obviously depend on what type of flooring you have in your office.

Carpet casters are designed to roll on softer surfaces and do not wear out the carpeting as easily as casters designed for hard flooring do. Experts recommend that you use tread caster wheels with polyurethane crown for this purpose. The crowns on these types of casters allow optimum rolling on carpeted surfaces. These casters are also very good for swiveling, because they rotate much more easily than flat-tread wheels. If you are looking for casters made for hard flooring, on the other hand, one of your best bets would be caster wheels made with phenolic resin. These casters glide perfectly on flat concrete and even on hardwood flooring.

There are many chair caster vendors over the Internet who are willing to give you substantial discounts if you buy in bulk. Some office supply manufacturers also sell chair casters. You can likewise have casters built into your office chairs even before you buy them. Make sure that the casters are securely placed but are at the same time easy to remove for easier replacement.

The thermostat controls the engine temperature in the Jeep Cherokee. It is located at the front of the cylinder head inside the water outlet. The thermostat limits coolant flow until the engine reaches 195 degrees F. With the thermostat open, coolant is free to flow to the radiator to be cooled. The thermostat opens and closes to regulate the flow and maintain the proper operating temperature for the engine.

Automotive thermostats consist of a wax pellet that melts at a predetermined temperature. As the wax melts, it opens the valve in the thermostat. As the valve ages, it can become partially stuck in either the open or closed position. Also, some thermostats have a latching mechanism that prevents the thermostat from ever closing again if it exceeds a certain temperature such as in an overheating episode.

To change the thermostat, you must remove the water outlet from the cylinder head. The outlet is held in place by two bolts. The upper bolt is easy to access. However, the drive belt blocks access to the lower bolt.

While it is possible to work around the belt, it is usually easier and less frustrating to loosen the belt and move it out of the way. It is especially hard to get the bottom bolt restarted into the hole correctly with the belt in place.

When the system is opened, coolant will be lost. Either park the Jeep where the coolant can be collected or drain the radiator by removing the lower radiator hose. Either way is messy, so be prepared. Remember that anti freeze is toxic to pets and wildlife.

Remove the two hoses from the water outlet. Remove the two bolts. Gently pry the water outlet off. More coolant will likely come out at this point. The thermostat will likely stay in the head. Gently pop it loose.

Clean the mating surfaces of any old gasket material and corrosion. Attach the new gasket to the water outlet. If the new gasket does not have an adhesive, use a gasket sealer to attach it to the outlet piece. Install the new thermostat in the recess in the head. It should stay put. If it does not, try a spot of gasket sealer to hold it in place. If it slips out of the groove while installing the water outlet, it will cause a leak.

Place the water outlet over the new thermostat and install both bolts. Tighten them evenly. If you previously loosed the belt, tighten it now.

Leave the water hoses off and add coolant until it comes out the heater hose connection. Install the heater hose. Continue to add coolant until it comes out the larger connection. Install that hose. Continue to add coolant to fill the system.

There will likely still be some air in the system. Either remove the temperature sensor at the back of the head to bleed the air or heat cycle the engine a couple of times to purge the air.

Check for leaks. Test-drive the Jeep to make sure the new thermostat controls at the correct temperature. If the engine has been running too hot or too cold due to a bad thermostat, the computer may take time to adjust. There may also be other damage that caused overheating such as a leaking head gasket. The Jeep 4.0 engine is pretty tough and can survive some overheating. Recheck the coolant level again after the engine cools off.

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