ZT 0300 late lock enganment

Joined
Nov 23, 2005
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154
I have two ZT 0300 and the NIB one I have has a great early lockup but the one Ive been carrying has the lock going almost all the way over. I've only had for 6 months is this normal wear and is there any trick to get it back.
 
I've fixed this by adjusting the alignment of the scales and the blade tension. Its one of those "after youve done it a couple times" things.

My Lahar was a bit tight to lock at all (low contact), so some minor adjustments and now its perfect.

You can always send it to Kershaw and they will fix it guaranteed!

Joe
 
Where did it originally lock up? Percentage wise, how much of the blade tang is being covered by the lock face?
 
rbp, I wouldn't worry about it. STR did a write up on this very issue a while back (framelocks moving over) and according to him, all its doing is adding more surface area to the blade tang, and therefore creating a stronger lock. My EDC MC TIZDP will go almost all the way over with a really tight grip, and its never given me a problem, even after a little over a year and a half.

If it bugs you, send it back to Kershaw. Or keep using it until it really bugs you, then send it back. Nice to have a lifetime warranty! :thumbup:
 
I've fixed this by adjusting the alignment of the scales and the blade tension. Its one of those "after youve done it a couple times" things.

My Lahar was a bit tight to lock at all (low contact), so some minor adjustments and now its perfect.

Do you have any additional info on this technique? I have a few older knives that I don't carry, due to liner-creep, and no company around to service them. (old Camillus CUDA knives)

Any tips would be appreciated.

Thanks,
DD
 
You loosen all of the scale screws and the blade bolt so everything will shift.

Then you push one side of the frame towards one end of the knife, while pulling the other side towards the other end of the knife, altering the alignment of the framelock a fraction. Think of the hand motion like how you fan a folded stack of money apart, thumb forward, fingers rearward.This will also alter your blade centering, so thats the part that takes a bit of trial and error. I typically use a vise and some wooden shims to hold the knife in position, then tighten the scales first, then the blade bolt. Sometimes it take 3-4 tries to get everything to jive, but Ive done it 4-5 times now and the adjustment lasts.
 
God technique J. On a Sebenza I have found that when putting it back together again, if I tighten the pivot fully tight first, then the two body screws, it will change the lockup. I also have rotated the stop pin sleeve a little when I do this, so in reality, it may not have much to do with tightening the pivot first as much as it has to do with the rotation of the stop pin.:D

Did try the same technique with my Umnumzaan and it did not change my lockup. Of course the Umnum has thumbstuds that act as the stop pin.

I think I'll try your technique J and see how it works on the Umnumzaan. I like to have about 25% to 30% lockup. Why? you ask. Because I'm an anal fart that don't no know better!:eek::)
 
rbp, I wouldn't worry about it. STR did a write up on this very issue a while back (framelocks moving over) and according to him, all its doing is adding more surface area to the blade tang, and therefore creating a stronger lock. My EDC MC TIZDP will go almost all the way over with a really tight grip, and its never given me a problem, even after a little over a year and a half.

If it bugs you, send it back to Kershaw. Or keep using it until it really bugs you, then send it back. Nice to have a lifetime warranty! :thumbup:

My first Kershaw knife was the Mini-Cyclone ZDP-189 in its new condition, the lock bar easily touched the other titanium handle.It didn't have any blade play but the lockbar was extremely easily to disengage the lockup of the blade with my index finger which quite frankly scaried me.I don't like nerve or tendon damage to my hand.

I posted my concerns in this subforum and on the urging of members of the kershaw forum,"Kershaw has the best customer service,Kershaw will take care of it,etc.... So I sent my knife in for service.When I received it back the lockup was better,openings were stronger and lightning fast because the torsion bar was greased up and pivot and washer were lubed,the blade's flat spot near the tip( received new that way) was sharpened out but now had a fine wire edge present,on blade and handle were a couple of gray smudges;I think from sharpening,and on the right side of the handle there were traces of red loctite on the ends of the screws.

A couple of weeks later,since there were gray smudges on the blade and handle I proceeded to disassembly for cleaning because I wanted to cut an orange up and peel an apple.During this is when I noticed that they have peened the cutout,used a punch near the edge of the lockbar and there's red loctite on the screws and on spots inside the handle.All I can say is Messy


After assembling it back and oiling the pivot and washers with some Nye machine oil that I had around the house,I discovered that the strong and lightning fast openings were gone.

But I did continued to use it to cut loose threads or open mail.A couple a weeks and after probably a couple hundred openings,I notice when I'm gripping the knife with my index finger in the guard that I notice an annoying creeking sound from the lockbar.I'm was not gripping very hard but as the week go past the lockbar engagement with blade's tang progressively got deeper.With my thumb pushing against the lockbar,I am able to push the lockbar closer to the other side to the point where it's like before

Presently the knife in my drawer seeing no use at all for the past 6 months.My Titanium Bump from the kershawguy, on the other hand is a completely another story.The lockup is rock solid even if I try to push the lockbar to the other side,it simply won't budge.I have since gone to several stores around to see Kershaw knives.Regardless if it's a liner or frame lock the lockup on every knife was rock solid and I have yet to see any liner or frame lock with the type of lockup like my Mini-cyclone.Make me wonder what going on at Kershaw's factory and repair department.
 
interesting story. i would contact thomas via email or PM and see if he will take a special interest in the knife for you. being discontinued and no more in the pipeline we need to make sure that all the MCTIZDPs are kept safe and in the highest working condition. see what he says when he writes back.
 
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