Sebenza Maintenance

bhyde

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This thread is to inform about the takedown and reassembly of the Sebenza using the "sandwich" method. This method is meant to reduce the likelihood of pinched washers and is my preferred method.

Materials and area needed;

It's somewhat important to have a flat surface free of clutter to keep from losing components. While it's not the end of the world to lose a component, it may cost time and money to replace them. Some pieces, if lost, require that the knife be sent in to Chris Reeve Knives for replacement. i.e. Washers

Materials

These are the materials that I use- Feel free to modify as you see fit with what you have at your disposal.

1) Lube- usually provided by CRK. This is what I use and recommend. There are other products out there, but that is not what this tutorial is about.
2) 5/64 hex wrench- usually provide by CRK. A 2mm can be used in a pinch, but it's a bit tight in the fastener.
3) Lint free cloth- usually provided by CRK.
4) Cotton tipped swabs- This is what I use to clean between the scales when they are still semi-assembled. Air compressor also works if you have it.
5) Paper towel for cleaning or providing contrast between the individual parts. Makes them a bit harder to lose. Again- feel free not to use this. This is my method.

Let's get started!

In the tutorial below, the instructions will be followed by the pic they are referring to.

Loosen up the pivot fastener with the 5/64 hex wrench, and push the female side through the scale. We are trying to mostly keep the knife together at this point. Wrench is inserted into an adjacent hex, but you will be removing the pivot fastener.



You can see in the following picture, that I have left the two fasteners on the right, but removed the pivot fastener completely.
I use the 5/64 hex wrench to push the female fastener out of the scale using the long end of the hex wrench. Be careful and take your time. Sometimes, you may have to put slight pressure on the lockbar to relieve some tension on the blade-pivot assembly.



In the following picture, I have removed the blade-pivot assembly. If you are a righty, you can do this by grasping the blade by the thumbstud in your left hand and apply slight pressure to the lockbar with your right thumb and pull the whole assembly free of the scales. If you find resistance, the remaining fasteners need to be loosened just a little to allow the assembly to move freely. (be careful, the blade edge is likely sharp. If you are nervous about this, put some painters tape over the cutting edge of the blade before removal)



Note the position of the individual pieces in the assembly that you have pulled free of the scales. We will need to put them back in this order to replace them back into the scales. In the above pic, you will note that the large washer is on the opposite side of the lockbar. At this stage, you can pull the pieces apart and clean them. I usually just wipe everything down good with the lint free cloth. A light degreaser such as WD-40 also works to clean. Just make sure you wipe off as much as possible before reassembly. (avoid mixing any oils/greases that you may use)
Here, the components are clean and ready to be reassembled.



Applying some of the lube that was provide by CRK. Use this sparingly as it doesn't take much. The amount in the pic is probably a little much, but good for a visual on where I apply. The same goes for the following pic. The worst that happens is that it will be forced out of the pivot assembly when everything is tightened up.



Applying some lube to the pivot hole in the blade.



Pivot bushing inserted along with a little lube applied to the opposite side of the blade. Again, there is going to be variation.. You may choose to apply lube to the washers or the blade. Use what works best for you.



Putting the "sandwich" back together, remembering the order in which they came out. Here, I am trying not to touch the lube too much..but it happens. Not a big deal. Especially when I am trying to operate a camera and hold these items for clarity at the same time.



Sliding the cleaned and lubed blade-pivot assembly back into the scale assembly. This is just the reverse of how you removed them. Try to align the pivot hole the best you can and you will likely have to put a little pressure on the lockbar just to get it in the right spot to insert the fastener.



Female pivot fastener inserted from the opposite side and centered up. It will take some patience. The fastener is a nice slip fit into the scales. Once it starts through the blade-pivot assembly, it generally just goes through both scales with little effort. Again, putting light pressure on the lockbar helps while moving the blade-pivot assembly around just a little. It takes two hands despite the pic.



Almost done.
Start tightening down the fasteners a little at a time until snug, including the pivot fastener. Don't put undue pressure on them. Snug means until you meet resistance and nothing more. At this point, you can open and close the blade noting any resistance that was not there before. If all seems well, go ahead and tighten the fasteners just a bit. Open and close the blade again. At this point, you should see that it opens smooth. Make sure there is no lube on the lockbar face. If there is, use a bit of alcohol to clean it off. Open and close the knife. I have heard that some recommend a 1x wrist flick to seat the blade. Do this if you wish, I have never found a need.
The blade should be centered within reason when closed and very little to no resistance when you open.
If there is an issue, stop and take the blade-pivot assembly out again. If done right, you should not have pinched a washer or created any condition that wasn't there before you started.



That should be it.

If there are any modifications or additions, I can add them to the original post.
Before I sticky this, we will let the community look and see if editing needs to be done before I drop the other sticky.
More tutorials to follow as I get some time.
 
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I normally do not loosen anything other than the pivot screw. It is a more snug fit to remove and re-insert the assembly, but it also reduces the chances of a pinched washer. As a side note, the original instructions CRK had on their site said to not loosen the other screws, just have them "comfortably tight."

When you said sandwich method I thought you were referring to the method used for the 25 and Inkosi - put it together in order with layers, like building a sandwich.
 
Nice write up! I like to use the sandwich method myself, but this is a clear tutorial that many would benefit from!
 
I normally do not loosen anything other than the pivot screw. It is a more snug fit to remove and re-insert the assembly, but it also reduces the chances of a pinched washer. As a side note, the original instructions CRK had on their site said to not loosen the other screws, just have them "comfortably tight."

When you said sandwich method I thought you were referring to the method used for the 25 and Inkosi - put it together in order with layers, like building a sandwich.

I have found that I have had an issue at one point in time not loosening the other fasteners..since then, I have just done it out of habit.
It may or may not apply. It hasn't been an issue for me as described above.
Both methods, building up and the one described above have been in my repertoire.. Neither have been an any ill effects for me, but I can't say that about everyone's approach. Some could end up with a pinched washer taking the whole knife down and putting it back together. Certainly, I can see how it could happen if you were in a hurry, not really paying too much attention when tightening things back down. Either way you do it, if you just slow down and tighten the fasteners a bit at a time, swing the blade a little and move on, you typically won't end up with the pinched washer condition. Not from my experience anyway.

Please keep the suggestions coming..I will incorporate as much as possible to help others,..Kind of the point of this whole exercise :)
 
Thank you BHyde for this concise, thoughtful, and very generous work. An excellent resource for anyone new to CRK, or folks nervous about taking down their Sebenza. I hope it can be made 'sticky'.
 
Nice writeup.

I see now I must have misunderstood this all along. I thought the "sandwich" method was when you put the washers and blade on layer by layer, and finnished off with one of the two slabs(presentation side in my case).

So what's that called then? Anyway this is my preferred method because when you do it that way you get the grease exactly where it is supposed to be and nowhere else.
 
Nice writeup.

I see now I must have misunderstood this all along. I thought the "sandwich" method was when you put the washers and blade on layer by layer, and finnished off with one of the two slabs(presentation side in my case).

So what's that called then? Anyway this is my preferred method because when you do it that way you get the grease exactly where it is supposed to be and nowhere else.

I agree! I did the blade/pivot bushing insertion method and it got grease everywhere but where I wanted it! And it put a nice scratch on the inside of my handles. Well, CRK recommends the method above, but I still assemble mine in layers. This is not to take away from the great tutorial above though!
 
I agree! I did the blade/pivot bushing insertion method and it got grease everywhere but where I wanted it! And it put a nice scratch on the inside of my handles. Well, CRK recommends the method above, but I still assemble mine in layers. This is not to take away from the great tutorial above though!

Thanx buddy!
 
Excellent how-to. I did it just once, to clean gunk out of my 21. After losing one screw I degreased all the screws then reassembled with Loc-Tite. Now I just wash it with soapy water when required (food prep mostly), and lube the pivot with a tiny dab of BreakFree from time to time. Opens smooth as butter.
 
Let's call it the crunchy taco disassemble technique. Lol

Sent from my HTC6525LVW using Tapatalk
 
Awesome thread Bill, thanks for posting. We've needed one of these "how to's" for a while.
 
Thanks for the vote of confidence!

If it looks good, I will unsticky the previous version and sticky this a bit later today.
I plan on doing the Umnumzaan, Inkosi and the Ti-Lock. Unfortunately for the Ti-Lock. it will be somewhat unofficial.
 
Thanks for the vote of confidence!

If it looks good, I will unsticky the previous version and sticky this a bit later today.
I plan on doing the Umnumzaan, Inkosi and the Ti-Lock. Unfortunately for the Ti-Lock. it will be somewhat unofficial.

I'm definitely looking forward to more posts like this!
 
Well done bhyde! It took a little hunting to find good instructions the first time I took down my Sebenzas so new owners will no doubt appreciate these stickies. I haven't taken down my Inkosi yet but I will be looking forward to your tutorial. Thanks!
 
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