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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Skid steer VS crawler loader
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<blockquote data-quote="skidsteer.ca" data-source="post: 5351" data-attributes="member: 307"><p>Most important about blowby is that, 1 its not too excessive, and 2 that is is relatively even. a large increase or "puff" surging out the pipe indicate one cylinder that is not sealing. At least if its even the engine is wearing normally.</p><p> Black smoke back in the 60's under load would be considered the norm.</p><p>Our 72 mack loader truck probably has 20 % of the intake air coming out the breather tube instead of the exhaust, yet it starts ok, oil consumption is reasonable, sure its near the end of its life, but we use it maybe 30 hours a year, and it will like last years yet.</p><p>Coolant looks ok, no oil in it? starts ok, black normal for diesel engine oil back then especially.</p><p>I'd be more concerned about the oil in the final drives, transmission etc, look for gear wear or part/ full teeth stuck to the plug, or fish in there with a magnet, if there is only very fine wear on those plugs, no water contamination etc then great.</p><p>How sharp are the sprocket teeth for the tracks. Also look at every track bushing the sprocket drives against for cracks, and of course cracked or bent pads/shoes </p><p>Maybe take the serial # and call Cat and inquire if any parts are still available.</p><p>With a put motor the main engine does no have to start so good either, if it gets tires and hard to start the small motor helps by warming the coolant of the big engine, and provides cranking time only limitted by your patience, and save the expense of 2 or more huge/ expensive batterys. If the put motor is electric start thats the main thing. My father had a 40's erra d2 that had a rope start put motor, no rewind on the starter back then either, but he always said once the put was running you knew you were going to work. In the cold Canadian winter, a gas starting engine was one of the best things going.</p><p>Ken</p></blockquote><p></p>
[QUOTE="skidsteer.ca, post: 5351, member: 307"] Most important about blowby is that, 1 its not too excessive, and 2 that is is relatively even. a large increase or “puff” surging out the pipe indicate one cylinder that is not sealing. At least if its even the engine is wearing normally. Black smoke back in the 60's under load would be considered the norm. Our 72 mack loader truck probably has 20 % of the intake air coming out the breather tube instead of the exhaust, yet it starts ok, oil consumption is reasonable, sure its near the end of its life, but we use it maybe 30 hours a year, and it will like last years yet. Coolant looks ok, no oil in it? starts ok, black normal for diesel engine oil back then especially. I'd be more concerned about the oil in the final drives, transmission etc, look for gear wear or part/ full teeth stuck to the plug, or fish in there with a magnet, if there is only very fine wear on those plugs, no water contamination etc then great. How sharp are the sprocket teeth for the tracks. Also look at every track bushing the sprocket drives against for cracks, and of course cracked or bent pads/shoes Maybe take the serial # and call Cat and inquire if any parts are still available. With a put motor the main engine does no have to start so good either, if it gets tires and hard to start the small motor helps by warming the coolant of the big engine, and provides cranking time only limitted by your patience, and save the expense of 2 or more huge/ expensive batterys. If the put motor is electric start thats the main thing. My father had a 40's erra d2 that had a rope start put motor, no rewind on the starter back then either, but he always said once the put was running you knew you were going to work. In the cold Canadian winter, a gas starting engine was one of the best things going. Ken [/QUOTE]
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Skid steer VS crawler loader
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