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HOHNER Service Workshops:C02.1 - Assembly - YouTube
Channel: HohnerMusic
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hello and welcome to the Hohner
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harmonica workshops workshops co 2.1
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assembling the slide package
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the first step in reassembling your
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chromatic harmonica is to screw on the
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reed plates there are two things that
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one has to remember while doing this the
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first is that of course you have to have
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the long Reed's where the long slots are
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to be found on the comb a second thing
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is that the reedplate grooves have to be
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at the front on the outside and then you
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simply fit the screws through the holes
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the larger holes on the upper reed plate
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and screw them into the thread on the
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lower reedplate the first screws that
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are inserted are the outside screws at
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the bottom edges the back of the comb
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and these are slightly tightened into
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their threads on the other reed plate so
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that the replate stay in position after
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that the other screws are inserted
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starting in the middle and also just
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screwed in slightly they must be
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tightened they're simply locked into
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place so they stay in the hole and
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working from the middle of the reed
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plate outwards towards the sides all of
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the screws are inserted one after the
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other and only after they are all in
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place and locked into their respective
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threads does one start tightening them
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and you start tightening in the middle
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right yeah you start tightening in the
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middle and work outwards and you do this
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in stages because otherwise what can
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happen is the reedplate
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warps and then it won't be airtight when
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all the screws have been screwed into a
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point where the Hayes are about a
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millimeter or two millimeters above the
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reed plate you start to tighten them
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starting at the back in the middle and
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working outwards towards the ends of the
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reed plate with the screws at the back
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when these have all been tightened you
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then go to the front row of screws and
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once again starting in the middle work
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outwards towards the edges of the
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reedplate one thing that's really
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important to pay attention to when
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screwing in these reedplate screws is
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not to over tighten them if you over
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tighten reedplate screws you can cause
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the reedplate to warp and this will mean
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that the instrument is not airtight so
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don't tighten them as tight as they will
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go
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just tighten them until you meet with
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proper resistance but the screw head has
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reached the reedplate
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another thing that can happen should you
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over tighten the reedplate screws and
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warp the reedplate is due to the
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extremely narrow tolerances between read
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and sort this can cause the reed to clip
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the edge of the slot and this is
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something to be avoided at all costs so
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don't over tighten the reedplate screws
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it's impossible to say exactly how
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frequently the slide package of a
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chromatic harmonica should be
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disassembled and cleaned however is safe
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to say that if the slide is sticking or
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if the mouthpiece is loose and losing
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air then it's time to take a look at it
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afterwards you need to reassemble the
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slide package so that it functions
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optimally the only tool that you need to
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do this is the screwdriver one thing
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that it's important to remember when
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reassembling the slide package is that
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you have to put the reed plates firmly
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on to the comb first because they
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stabilize the comb and if you don't do
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this then the pressure of the slide
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assembly on the front of the comb may
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cause the comb to warp so the instrument
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won't be airtight it's an operation
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which only takes seconds when performed
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by professionals in the hona factory but
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it can be a daunting prospect if you
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only have to do it occasionally it's a
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matter of some controversy whether it's
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actually necessary to use slide
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lubricant actually for most people their
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saliva is all lubricant that they need
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but the composition of different
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people's saliva is different
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if you think that you need to use slide
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lubricant to get a smooth slide action
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use it extremely sparingly
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what garbey is going to do now is put a
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drop on each side of the slide a tiny
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drop as I'm sure you can see and then
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spread it with the forefinger and thumb
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evenly along the whole length you don't
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need to use any more than that and you
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need to avoid at all costs that it gets
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inside the instrument because if it gets
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onto your windsavers or into the reed
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slots then it's going to gum them up so
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use it sparingly the first step is to
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place the blank on the front of a comb
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assembly then the slide is placed on top
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of the blank and the slide spring is
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inserted through the appropriate hole in
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the slide correctly positioning the
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mouthpiece and tightening the screws is
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the most critical part of assembling the
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slide package start with the screw on
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the opposite side to the slide button
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here the buffer is slipped over the
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screw and then the screw is inserted
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into the hole in the front of the comb
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assembly when it's sitting firmly in
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place the screw is tightened likely a
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maximum of two turns no more you're not
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meant to screw it in now the mouthpiece
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screw on the slide button side of the
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mouthpiece is inserted into the hole
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from the front and the buffer is pushed
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over the screw from the other side it's
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a bit fiddly trying to get the screw and
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the buffer on the slide button side into
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the hole the best way to do this is to
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push the slide button in slightly as
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this then exposes the hole and permits
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you to slot the screw into the hole if
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you're unlucky at this stage then the
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slide spring may jump out of its
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position and you can also have the
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mischance that the buffer falls inside
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the instrument if this happens you have
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little alternative but to take the reed
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plates off and start again so be patient
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and
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good luck so if that went well both
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screws should now be in position and
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they can now be carefully tightened the
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next step is then to check the slide
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action to see how smoothly it moves as
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the mouthpiece screws haven't been fully
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tightened at this point the slide should
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move completely freely what we now do is
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tighten the screw on the opposite side
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to the slide button until you feel a
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clear resistance when pushing in the
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slide button then loosen the screw just
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a tiny bit and the action will be right
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and now this procedure is repeated on
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the other side where the button is held
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and like that the slide can move freely
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but the slide assembly is airtight now
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it's time to play the instrument through
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one time to make sure that everything is
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working all right
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all right and now with the slide button
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in
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wonderful so that's working again and
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it's airtight
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what we now do is insert the cover
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supports which you can just basically
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push back into the holes that they came
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from before one only needs really to
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press them in slightly it doesn't
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require any great strength and now it's
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time to put the covers back on again
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which is done fairly quickly and easily
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once again this can be a bit fiddly with
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full length covers because you need to
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make sure that they are really sitting
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exactly right otherwise you can't get
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the two screws to join up but it appears
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to have worked
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a voila completely reassembled
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you
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