Posted by Goose on May 18, 2013 at 15:05:08 from (70.197.194.37):
Have a garden tractor with a 24 hp B&S OHV engine.
Went to use it this morning, and it ran on only one cylinder and made a "popping" sound in the air cleaner. Did some trouble shooting and found a bent push rod.
This engine has about 300 hours on it, and has never been opened up, so why would a push rod decide to bend? I can operate the rocker arm and valve by hand, and it feels like it should. I straightened the push rod and put it back in. It bent again when I turned the engine over by hand.
I can't see any reason for the rod to bend unless it's a defective rod. Even if the key sheared in the flywheel, all that would do would be throw the engine out of time, it wouldn't cause a piston to hit a valve.
I'll admit, I've never had one of these OHV's apart and I'm not sure what drives the cam.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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