A forklift must be checked well and given a test run before purchasing it. This applies especially to trucks being purchased on-line. It is essential to detect potential issues with trucks purchased from companies online.
Be sure to start the engine from cold, and note the ease with which the engine turns over and whether there is excessive smoke. This is especially essential with IC engine trucks.
The test run must include an inspection of the truck's performance in challenging situations. A driver who is qualified can maneuver the truck in forward and reverse, up the ramp.
You could carry out your own inspection of an IC engine truck. On a clear area of floor, run the truck around for a few minutes while a trained driver tests the hydraulic functions. After that, examine the ground underneath for signs of fluid leakage. Even seemingly insignificant leaking could indicate serious problems which would be pricey to repair later on.
A skilled person should check the masts and chains. Check with and without a load that the mast operates smoothly. Watch for sticking or 'binding' of the mast. A warning sign is play in the mast channels or between the fork carriage and mast. One more is creeping down or creeping forward of the mast when loaded. These can be signs of issues with valve, seals or ram.
The mast might have been changed at some time if the truck is used. Make certain that the mast and any fitted attachments adhere to the rating plate on a truck. Make sure that the sideshift is not sticking when loaded.
When checking the forks, look closely at the heel thickness for damage or wear. The truck's manufacturer specifies minimum thickness. A loose fit might mean the hanger points or carriage are worn. Look for cracks on the arms at heels and mountings.