Prior to purchasing a forklift truck, you should make sure that it is correctly checked and given a test run. This applies specifically to trucks being acquired on line. It is vital to find possible problems with trucks bought from companies on line.
Starting the engine from cold is a great idea. Note whether there is excessive smoke and the ease with which the engine turns over. This is specifically vital with trucks which have IC engines.
The test run must include an inspection of the truck's performance in tough situations. An operator who is trained could operate the truck in forward and reverse, up the ramp.
You could inspect an IC engine truck yourself. On a clear part of floor, run the truck around for a few minutes while a skilled operator tests the hydraulic functions. After that, examine the ground beneath for signs of fluid leakage. Even seemingly insignificant leaking could indicate serious issues that would be really expensive to repair later on.
A trained individual must check the chains and masts. Check with and without a load that the mast operates smoothly. Watch for 'binding' or sticking of the mast. A warning sign is play in the mast channels or between the mast and fork carriage. One more is creeping down or creeping forward of the mast when loaded. These could be symptoms of issues with ram, valve or seals.
If the truck is not new, the mast might have been changed at some time. Make certain that the mast and any fitted attachments follow the rating plate on a truck. Make certain that the sideshift is not sticking when loaded.
When checking the forks, look closely at the heel thickness for wear or damage. The manufacturer of the truck specifies minimum thickness. A loose fit might mean the hanger points or carriage are worn. Watch for cracks on the arms at mountings and heels.