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techtalk:ref:tools108 [2019/03/24 19:11] hippysmack |
techtalk:ref:tools108 [2019/03/24 20:37] hippysmack [Stethoscope (and other listening devices)] |
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| ====== Stethoscope (and other listening devices) ====== | ====== Stethoscope (and other listening devices) ====== | ||
| See also [[techtalk:ref:svcproc14#using_a_stethoscope_or_other_to_hunt_down_engine_noises|Using a Stethoscope or Other to Hunt Down Engine Noises]] in the REF section of the Sportsterpedia. \\ | See also [[techtalk:ref:svcproc14#using_a_stethoscope_or_other_to_hunt_down_engine_noises|Using a Stethoscope or Other to Hunt Down Engine Noises]] in the REF section of the Sportsterpedia. \\ | ||
| + | |||
| + | Normally, you'd use all of your senses on an engine. ((Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=977525&page=3)) \\ | ||
| + | Look at it, (oil leaks ?, obvious bad signs). \\ | ||
| + | Listen to it, (both with and without a stick). \\ | ||
| + | Feel it, (try a broken crank one time!). \\ | ||
| + | Smell it, (bad gas or oil?). \\ | ||
| + | But like anyone diagnosing things, experience gives you the ability. It just takes time. | ||
| The "sounds" in a Sportster engine can be quite disturbing, very much like the engine is going to blow up. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=832376)) \\ | The "sounds" in a Sportster engine can be quite disturbing, very much like the engine is going to blow up. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=832376)) \\ | ||
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| Sound, and it's interpretation, is a totally subjective thing. \\ | Sound, and it's interpretation, is a totally subjective thing. \\ | ||
| What 'sounds' bad to one doesn't to another. \\ | What 'sounds' bad to one doesn't to another. \\ | ||
| + | You'll here noises from all over the engine. ((Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=977525&page=4)) \\ | ||
| + | The trick is being able to decipher which ones come from where and if they sound correct or not. \\ | ||
| + | Unfortunately, experience is the best teacher here and you do need a known good engine as a reference point. \\ | ||
| However, this method can be used to hear differences in moving parts in the engine. \\ | However, this method can be used to hear differences in moving parts in the engine. \\ | ||
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| Or, bite the bullet and take it to an experienced wrench with enough experience to at least narrow things down a bit. \\ | Or, bite the bullet and take it to an experienced wrench with enough experience to at least narrow things down a bit. \\ | ||
| But that may also be a subjective opinion. \\ | But that may also be a subjective opinion. \\ | ||
| + | |||
| + | This method is also good for detecting air leaks. \\ | ||
| + | |||
| + | ===== Stethoscope ===== | ||
| |Mechanic stethoscope. ((photos by asasial of the XLFORUM http://xlforum.net/forums/showthread.php?t=977525&page=3)) \\ The black partition at the end of the tape measure is where the diaphragm is. Note the size of the diaphragm.|| | |Mechanic stethoscope. ((photos by asasial of the XLFORUM http://xlforum.net/forums/showthread.php?t=977525&page=3)) \\ The black partition at the end of the tape measure is where the diaphragm is. Note the size of the diaphragm.|| | ||
| |{{:techtalk:ref:tools:stethoscope_1_by_asasial.jpg?direct&300|}}|{{:techtalk:ref:tools:stethoscope_2_by_asasial.jpg?direct&300|}}| | |{{:techtalk:ref:tools:stethoscope_1_by_asasial.jpg?direct&300|}}|{{:techtalk:ref:tools:stethoscope_2_by_asasial.jpg?direct&300|}}| | ||
| + | |||
| + | ===== Rubber Hose ===== | ||
| + | This can be a spare piece of oil line or even a cut off piece of garden hose. \\ | ||
| + | Hold one end up to your ear and the other end against the testing site. \\ | ||
| \\ | \\ | ||
