Question about Oster Golden A5 2-Speed Universal Motor Clipper 78005-140

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My Oster A5 is making a loud clacking sound. The sound only happens when the blade is in motion. If the motor runs without the blade, it has a normal sound. I think it has to do with the plastic part that moves the blade getting loose or wearing out or needing grease. How do I fix it?

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This is for Clees534, with whom I have some sympathy. Terms regarding devices are all too often assumed as understood. For most purposes, these are what you have to know for the A5 Oster. The cover plate is the part with two screws that has the name and other info on it. If you remove the two screws and the plate, you will see a nylon part that moves the blade back and forth--that is the lever. The other end of the lever, with a hole in it, is connected to a metal part called the link. Both parts are easily removed by simply pulling them upward from the device. The bakelite gear is the part that the link sits on (the larger hole in the link). It too can be simply pulled up off the metal shaft that it rides upon (careful not to lose the washer under it). That gear is turned by the armature gear of the motor (which is where things get much too involved to cover here, but from that point on the device very rarely has problems). The lever, the link, and the gear can all quite simply be replaced. They are available quite inexpensively at Amazon under Oster A5 Clipper parts (note that the one speed and the two speed take different bakelite gears, but the lever and the link are the same). If you were to replace parts such as these, remember that a good white lithium grease is recommended in light application for the gear and the shafts (lever and gear shafts and armature gear). Also, the gear shaft has a hole down its middle (and two small holes that lead to the outside of the shaft. The shaft should be filled with grease so that grease can get through those small holes to lubicate the inside of the bakelite bearing. The simple way to tell if you need to replace parts is to grip the blade end of the lever while all parts are in place and try to move it back and forth, as though it were running the blade. If there is any more than the slightest movement, replace the lever (replace that anyway if the part that contacts the blade is rounded off) link and gear.

So, hope this makes things more understandable. Good luck.

Posted on Sep 30, 2009

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Adjust the large screw on the side of the razor in or out.  Also oil it with a little WD40

Posted on Mar 13, 2009

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Solution 1 by Neil647 is like greek to me. Everywhere I look on the internet I don't understand my stupid clipper ?hinge assembly, metal posts, lever, gearwheel, new body, drive lever, signs of wear, tram lines...what the heck is all that language? Even the brief instructions that came with the Oster A5 mean absolutely nothing. Why is there not an instruction manual that starts from the beginning...a diagram of parts, some definitions, some step by step instructions on lubricating and when to do it. OMG this is like a secret society for clipper people

Posted on Sep 11, 2009

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Check the two screws holding the hinge assembly on make sure they havent worked loose, if the problem is with all your blades check for excess side to side movement on the metal posts holding the lever and gearwheel into position these may wobble as the clipper gets hot if so you need a new main body. The drive lever should be replaced regulary check the tip for signs of wear if this is the fault you will experiance tram lines on larger blades slow clipping.

Posted on Mar 15, 2009

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(1) first close the hinge, in close potion with your finger nail try to open the Hinge, if the hinge slightly open or opens loose the Hinge is worn. if the Hinge is good it will not open or move and your nail may just brake your nail.
Many of my customers run into this type of problem, and the problem can be solve easily by checking these parts first.
One more item I would mention here if replace the A5 Hinge make sure you get the A5 Hinge not the Oster 76 Hinge they are driferrent, The A5 Hinge has on the back two wire's sticking out that fit on the Oster Latch for the A5 Hinge, the Oster 76 Hinge would not have these wire's on the back. I recommend replacing the Latch when you replace the Hinge. I hope this helps any body that have a A5 Oster clipper or A Oster 76 Clipper.
I have over 20 years in the repair business of Sharpening & Clipper repair. Mannys Sharpening 323 263-4697

b61c252.jpgOster Hinge

d9c40e2.jpgA5 Latch 7d84845.jpg

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