Agriculture Reference
In-Depth Information
all jobs for you perfectly, but try to choose the type of tractor that is best suited for your
needs.
BUYING A USED TRACTOR
Just as when buying a horse, when looking at used tractors there are many things to con-
sider, and it's up to you to discover a tractor's strengths and weaknesses. If you lack exper-
ience, have the tractor evaluated by a professional.
Does the radiator show signs of leakage?
If there are stains near the radiator cap or
overflow tube, or mineral deposits inside the radiator (remove cap), the radiator may re-
quire flushing or repair.
Does it start easily?
A tractor that starts cold tells you that it has a good battery, com-
pression, and ignition and a functioning fuel system. If it doesn't start easily, it may be a
good tractor in need of a battery or tune-up, or it may have serious problems.
Is the thermostat functional?
A thermostat should prevent liquid from circulating
through the radiator until the engine is warm. Right after cold starting and with the engine
at a fast idle, remove the radiator cap. If you see bubbling liquid, it means the thermostat is
stuck open or has been removed. Question this.
Does it run well when hot?
Run the tractor for half an hour, keeping an eye out for oil
or antifreeze leaks. Shut off the tractor, then see if it will start hot.
Does it smoke?
Diesel tractors puff a little black smoke on start-up but soon should run
clean. Blue smoke indicates oil burning, which could mean problems with rings, pistons,
or valve guides. White or black smoke could indicate the need for a tune-up (carburetion
or ignition).
What kind of noises do you hear?
Ticking might mean a valve adjustment is needed.
Loud knocking, clunks, or thuds are usually serious, involving crankshaft, bearings, or pis-
tons.
Is there leakage in the middle of the tractor?
A rear main seal that is leaking can get the
clutch oily and ruin the clutch lining. If the rear main seal needs to be replaced, the tractor
will usually need to be split in two; this is a costly repair.
What does the oil look like?
After the tractor runs for half an hour, turn it off and pull
the dipstick. Water or foam could indicate a serious problem.
Has the air cleaner been serviced?
On an older tractor with an oil-bath air cleaner, look
at the oil level and sediment to determine if the cleaner has been regularly serviced. Dry
filters should be free of dust and dirt; if clogged, the engine has been taking in dirt due to
poor maintenance.
