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techtalk:ref:tools108 [2019/03/24 20:37]
hippysmack [Stethoscope (and other listening devices)]
techtalk:ref:tools108 [2019/03/25 16:55] (current)
hippysmack old revision restored (2019/02/23 02:15)
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 ====== REF: Tools - 108 ====== ====== REF: Tools - 108 ======
-====== ​Stethoscope (and other listening devices) ​====== +====== ​Inspection Camera ​====== 
-See also [[techtalk:​ref:​svcproc14#​using_a_stethoscope_or_other_to_hunt_down_engine_noises|Using ​Stethoscope or Other to Hunt Down Engine Noises]] in the REF section ​of the Sportsterpedia. \\+There are many uses for small inspection camera including checking condition ​of pistons, cylinder walls, chamber debris and valves through ​the spark plug hole. Below are some other useful ways to use the camera. \\ Click on a pic to enlarge:
  
-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)) \\ +|  Check your belt tension without lying on the floor to see the scale on the belt guard  ||| 
-Look at it, (oil leaks ?, obvious bad signs). \\ +|{{techtalk:​ref:​tools:​inspection_camera_on_magnetic_base_2_by_gospelman.jpg?​direct&​300|}}|{{techtalk:​ref:​tools:​inspection_camera_on_magnetic_base_3_by_gospelman.jpg?​direct&​300|}}|{{techtalk:​ref:​tools:​inspection_camera_on_magnetic_base_4_by_gospelman.jpg?​direct&​300|}}| 
-Listen to it(both with and without a stick). ​\\ +|Camera mounted to a dial indicator magnetic base ((Pic by Gospelman ​of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2039451))|Note position of the belt in the window with no force \\ applied ​((Pic by Gospelman of the XLFORUM http://​xlforum.net/​forums/​showthread.php?t=2039451))|Finallythe belt with 10 ft/lb applied using the belt \\ tensioning tool  ​((Pic by Gospelman of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2039451))|
-Feel it, (try a broken crank one time!). \\ +
-Smell it, (bad gas or oil?). \\ +
-But like anyone diagnosing things, experience gives you the abilityIt 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)) \\ +|  This 45° mirror attachment allows you to see horizontal holes and features \\ that are normally blocked from view as in below. ((photos by Hippysmack))  || 
-Literally like a tin can of marbles\\ +|{{:​techtalk:​ref:​tools:​inspection_camera_45_deg_mirror_1_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​tools:​inspection_camera_45_deg_mirror_2_by_hippysmack.jpg?​direct&​300|}}|
-What you need to do is to determine if it is the normal sound or if something is wrong\\ +
-It is very difficult, almost impossible, to isolate the source of a noise while riding. \\+
  
-There are pros and cons (as in other subjects) to using this listening method. \\ +|  Checking for debris ​in the oiling holes in the lifter bores. ((photos by Hippysmack)) ​ ||| 
-Sound, and it's interpretation,​ is a totally subjective thing. \\ +|{{:techtalk:​ref:​tools:​91-99_lifter_pin_screw_upgrade_17_by_hippysmack.jpg?​direct&​300|}}|{{:​techtalk:​ref:​tools:​91-99_lifter_pin_screw_upgrade_19_by_hippysmack.jpg?direct&300|}}|{{:​techtalk:​ref:​tools:​91-99_lifter_pin_screw_upgrade_21_by_hippysmack.jpg?​direct&​300|}}|
-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. \\ 
-Using a stethoscope is an excellent way of comparing similar areas, such as lifters, pushrods, etc. ((ericfreeman of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=977525&​page=2)) \\ 
-A slightly tight valve train won't make the same sound as a properly adjusted valve. \\ 
-But it's readily apparent when using a stethoscope. Same for rocker arms. \\ 
-A quick probe around with a stethoscope now and then alleviates some worry about what might be missed otherwise. \\ 
-The '​scope'​ is just another tool to find the general area of the noise. \\ 
-And there is nothing wrong with using all the tools at your disposal to diagnose and troubleshoot. \\ 
-It still can be difficult to nail down the exact cause of the noise without visual inspection of the parts. \\ 
-When you first try it, you're likely trying to pinpoint the source of a particular sound to isolate the area you'd need to disassemble. \\ 
-But, in some instances, it can be like chasing ghosts by trying to do this with a stethoscope. \\ 
-The unfortunate reality is that you'll have to break the motor down into '​sections by section'​ to track down what's ailing it. ((Ivan RoachCoach of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=977525)) \\ 
-That's a hard pill to swallow if the noise you hear is not detrimental by nature. \\ 
  
-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. \\ 
- 
-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.|| 
-|{{:​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. \\ 
  
 \\ \\