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NWMO 901 SOS
02-18-2008 10:46:12
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Re: proofmeter rebuild in reply to Massey50, 02-17-2008 21:25:45
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| briley said: (quoted from post at 13:19:21 02/18/08) enjoyed your article and photos of your proofmeter. my s-o-s proof meter will not register the hours, however, the tach works fine. how difficult is it to seperate the housing to access the internal portion of the meter,mine is factory pressed together. would enjoy seeing your complete phots. new to s-o-s's, a learning process. |
The metal ring that holds the glass in is "folded" over the lip of the "cup" that hold the proofmeter. I just took a screwdriver and pryed the lip up and then used pliers to bend it up a little more. After going all the way around, you will be able to work the metal ring off. The glass is sealed to the cup and you will want to be careful in removing it as not to break it. I used a utility knife to separate it from the "cup" or housing. If you then take the two screws out of the back of the proofmeter, the whole thing should slide out. If you look under the face plate you will see the gears that should be driving the hour meter. The second picture provides a decent view of the large gear that is driven by a smaller gear to move the hour meter forward. I will try to get pics up for the whole process soon. Mine was seized, so I had nothing to lose, you will have to decide for yourself if it's worth the risk, but if you take it easy, there should be very little chance of damaging the working tachometer. Best of Luck.
If you do give it a try, choose a lubricant and do a little clean/lubricate while you have it out. Also, when you put it back together, use silicone or similar sealant to keep things a tight as possible. Some on the screws in the back, should be a cork gasket there as well, and of course, between the glass/housing.
Chris
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