Posted by Fixerupper on January 03, 2010 at 12:31:46 from (207.177.13.178):
In Reply to: Allis 8070 posted by muckfarmer on January 03, 2010 at 06:42:33:
Well, no one else has replied yet, so I'll give you what little I do Know. It probably has the 426 cu. engine. They throw rods. More than the other brands. I've seen more than one or two with a hole in the block sitting in the dealer's shop. The Allis mechanics around here tell the owners to replace the rod and main bearings every 3000 hours, change the oil religiously and everything will be fine. My neighbor has a well maintained 8000 hour 7060 with this engine and he's never had an engine problem, but he's had the bearings changed twice just as a part of his maintenance program. One mechanic's version of the cause of the problem is the block spreads lengthways so oil pressure is released out of the front and rear mains. That's the only major chronic problem that I know about. Jim
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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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