The power take off starts slipping and cuts off after it runs for a couple hours, what is the solutions to my problem
If you are talking about an electric PTO system, then there are two possible causes. The first is voltage drop. If your alternator is not charging the battery correctly, the available power to operate the PTO Clutch will drop below critical level. If you have to keep putting the battery on charge, this is almost certainly the cause.
The second possibility is mechanical failure of the PTO clutch. One of the most common clutch failures causes them to overheat and when the temperature increases, so does the electrical resistance.
Try this test:
Park the machine on a flat, level surface, switch the engine off,lock the brakes, remove the spark plug lead then remove the cutter belt from the engine pulley.
Now try to turn the PTO pulley on the engine. It should be firm to turn and you may hear/feel a slight grinding (this is normal). Next, turn the ignition switch to the 'run' position (NOT the start position), then turn the PTO switch to the ON position. Reach back under the machine and try to turn the PTO pulley again. This time, it should feel much heavier to turn because it's now connected to the engine shaft. It should turn smoothly for about 3/4 of a turn either way. Most importantly, you should no longer hear/feel any grinding. If you can still feel grinding, it means the PTO clutch has had a mechanical failure. In some cases, the fault can be rectified, however it is not generally recommended as a D.I.Y task.
Jun 02, 2015 |