Sebenza 21 disassembly question

South paw draw said:
Ok so I guess I'm so old school brother. I'm gonna give the slip and slide a try. I do the sandwich on damn near all my knives but benchmades and now that you bring this up I'm gonna add CRK to the list. I have cleaned all four the umnumzaan, inkosi and both 21's and out them back with the sandwich method. Never had a problem but I don't want a pinched washer on any of them. Not even a chance of one. So slip and slide it is.
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just a heads up, the slip method is only for the 21. The sandwich method is recommended for the Zaan and Inkosi
 
The reason for keeping the stop pin tight and sliding the assembly in is to prevent pinching the washers. It is a snug fit, but it does go in. If the stop pin is loose the washer can slide over the bushing when you insert the assembly, and when you tighten the pivot it will pinch the washer. Do whatever works for you, but CRK recommends doing it with a tightened stop pin.

I rarely take it completely apart - mostly just remove the blade/bushing/washers to clean and lube.

 
I have the original cleaning instructions that were on the CRK site and on BF in 2003 in PDF format if anyone is interested.
 
Don M said:
I have the original cleaning instructions that were on the CRK site and on BF in 2003 in PDF format if anyone is interested.
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Yes please
Rekozma at gmail. Com
If you could email that to me that would be awesome brother
 
Don M said:
The reason for keeping the stop pin tight and sliding the assembly in is to prevent pinching the washers. It is a snug fit, but it does go in. If the stop pin is loose the washer can slide over the bushing when you insert the assembly, and when you tighten the pivot it will pinch the washer. Do whatever works for you, but CRK recommends doing it with a tightened stop pin.

I rarely take it completely apart - mostly just remove the blade/bushing/washers to clean and lube.

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That does make sense however the pivot has to slip through all the way before you tighten down the pivot screw, so wouldn’t it all be seated after that pivot goes through fully?
 
Tony636 said:
That does make sense however the pivot has to slip through all the way before you tighten down the pivot screw, so wouldn’t it all be seated after that pivot goes through fully?
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Pretty much. Like I said cracking it loose a hair works great. It's still tight at the stop pin. Just not cranked down.

The bushing and washers are often hand lapped at the factory so it can vary how things fit together.

I dont know how folks have issues with these knives lol. Just dont get it. Unless too much alcohol is involved ;)
 
Yeah
BellaBlades said:
Pretty much. Like I said cracking it loose a hair works great. It's still tight at the stop pin. Just not cranked down.

The bushing and washers are often hand lapped at the factory so it can vary how things fit together.

I dont know how folks have issues with these knives lol. Just dont get it. Unless too much alcohol is involved ;)
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that’s exactly what I do I crack it loose then tighten it snug until I feel a bit of resistance then put the blade assembly in, put the pivot through, tighten the stop pin down then put the pivot screw in
 
Tony636 said:
That does make sense however the pivot has to slip through all the way before you tighten down the pivot screw, so wouldn’t it all be seated after that pivot goes through fully?
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The washer could still be pinched between the bushing and the scales with the pin all the way through.

Never had it happen though.
 
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Tony636 said:
Yeah

that’s exactly what I do I crack it loose then tighten it snug until I feel a bit of resistance then put the blade assembly in, put the pivot through, tighten the stop pin down then put the pivot screw in
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Exactly. It allows it to slip in just a tad easier but still snug enough to prevent a washer from coming off the bushing!

This works perfect. If you happen to have washers that were thinned out a tad too much you may not need to do this. I always prefer things to be tighter though. One of the many reasons I love the inkosi for adjustability and stagnant washers.
 
353 said:
The washer could still be piched between the bushing and the scales with the pin all the way through.

Never had it happen though.
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Yeah same, and every time I take it apart and go back together I always crack the stop pin loose a little.. always goes back together smoother than before and no play ever
 
rycen said:
Something I never quite understood was why the “sandwich” method for assembly is frowned upon. It seems that getting a pinched washer assembling this way would be impossible. I’m sure there’s a good reason and I’m sure it’s been discussed before.
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I always do the sandwich method. Seems much more precise to me than sliding the blade assembly in, possibly knocking a washer off the bushing and then you have a pinch. But one problem I've run into with the 21 (and maybe why they recommend sliding the blade in) is that the body pins can fall out mid assembly causing a little hickup. I usually use a small tear of painters tape to keep the female body screws in long enough for me to get a screw in on the top side.
 
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