Posted by bill from scotland on May 27, 2014 at 13:04:54 from (81.131.210.254):
I went to see this tractor a few weeks ago, local dealer advertised it for sale. Its a 1970 International 634 diesel, only about 4000 of these built Im told. Tractor was supposed to be in running order with reconditioned starter motor. Got there and it looked much as expected, it had stood outside the International dealership for about 9 months. Seller puts a battery on it, gives it some heat and turns the key. Instead of turning over the engine the starter motor begins to smoke and nothing from engine, frantic efforts are made to disconnect the battery by a guy from the dealership, Too late me thinks as that reconditioned starter motor may be burned out. Dealership guy who sold these tractors when new during the 70"s tells me not to worry the starter motor is just sticking, I say the exhaust pipe was left open so water has got down the pipe and the engine is stuck. Both guys say rubbish we will soon have her running with a pull start, I say your likely to break rings or bend a rod. Ten minutes later its been pulled around the yard and its now agreed she is well and truly stuck. After some re-negotiating on the price I buy it and have it delivered home. Took the head off a few days ago and poured fluid down the bores. Disconnected each rod today and carefully removed the pistons and what do I find,number 3 piston (stuck one) has the top ring broke. Lots of phone calls later Im told rings are obsolete for the BD 281 engine, but last phone call gets a really helpful guy who locates one ring set for a single bore sitting at the back of their shop so with luck I should get her going again. Dont know about the starter yet. Rings for one cylinder cost $115 not cheap so best I dont break them when re-assembling.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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