What have I missed?

[b4himdude]

Ok this has gone far enough. I gotta ask this question even though I've read it all in the archives , maybe I have a unique situation.( it's not a positive thing). Anyway, I've been experiencing hard shift lately on my 98 k5.,and I'm at my wits end. I just need to say all the things I've tried and what I now plan to do to allieviate my left halfs 1 down 4 up jonze. There's nothing( well maybe not nothing) worse than getting the accelleration of your bike shoved up your..... Ok I've also got to say( might be just a coincidence) but both my 95 and 98 k5's have started doing this hard shift thing. That would lead me to think we'll d**n it's something I'm running for tranny fluid. They didn't start doing this at the same time. It was like a two week " in between " period from when #1 starts having this issue till when #2 started it. #1 is the 98. For reference sake . So I've changed the clutch plates ( all this I've done on#1. Changed the clutch plates, clutch basket , clutch pressure plate clutch boss clutch housing clutch hub, clutch berating a , springs. That didn't change any thing SOOOO, I hanged the external shift mechanism. ( mind you all these things I changed  1 by 1 and out it back together to test each time). Ok external shift mechanism, then the gear drum as well and the whole stopper for the gear drum.and the shifter. I guess it's all considered the external shift mechanism . But I broke it down into 3 different parts. Shift lever, shift shaft , gear drum.each on its own I changed and no difference still. So I split the case. I changed it all to a different transmission in the first time I opened it. The second time I changed the shift drum the pins and the forks. This wasn't a "NEW"!transmission but the on both sets the dogs gears everything , there's no damage they're clean. The shift forks are good too. All 3 sets I have. Anyhow o dint change the output shaft bearing nor did I change the bearing inside the case the clutch shaft rests on. But they sound good( no sound at all, and smooth as smooth)... Then I went for atf type f after reading that whole thing. I thought at first it was helping. But it didn't do anything either. Anybody? Anybody?

[b4himdude]

Didn't mention that they are both running different tranny lube. Or were. So rebuild the gear sets in the tranny with new circlips and snaprings.? I have also read somewhere that often times a person will have to "shim" the gear sets . Dont exactly know where I would even begin to shim them. I assume it must be for taking up the free play back and forth inside the gearbox so they mesh right. But a gear set rebuild would do the same thing only correctly right? What's that consist of? All circlips and any damaged gear. Dogs are probably on that list too huh?

[sandblaster]

Things to measure and compare in your service manual:
Pin diameter on your shift forks.
The drum slot width's that the fork pins ride in.
Width of the fork arms where they ride in the gear groves.
The width of the gear slots for the shift forks to ride in.
The shift fork shaft diameters.
The straightness of the shift fork shafts.
What did yours measure?

[b4himdude]

Things to measure and compare in your service manual:
Pin diameter on your shift forks.
The drum slot width's that the fork pins ride in.
Width of the fork arms where they ride in the gear groves.
The width of the gear slots for the shift forks to ride in.
The shift fork shaft diameters.
The straightness of the shift fork shafts.
What did yours measure?

I guess when I break down and split the cases I'll have to get the calipers on em and compare. But , my amsoil motorcycle lube is on today . I'm not sure if I should try a quart of that in there first to see what happens. I had to have a local deisel repair shop comract their distributor in Idaho and bring down 3qts(which was all he had) when he came down for a car show last weekend. $13.00 /qt. I bought all 3 he had.

[kxpegger]

I'm running three 4 strokes right now and two 2 strokes. A couple of 450 SX-F KTM's and an RMZ450. I decided to standardize the transmission oil in the 4 strokes. I had been using Motorex 10W-50 Cross Power 4 full synthetic in the KTM's including my 250 SX 2 stroke since new and no problems. I had been running Honda GNC 4 stroke 10W-40 in the RMZ since 2005 and no problems. I switched the RMZ to the Motorex oil and within a few minutes of riding the clutch became so grabby and notchy that it was impossible to ride slow technical stuff. I'm on my second oil change and my third ride since going back to the Honda oil in my Zook and the clutch is returning to normal. The Zook does not like full synthetic Motorex!

I also put the Motorex in my KX500AF but haven't ridden yet. Hopefully the KX500AF will be happy with the Motorex full synthetic. If the same thing happens with the KX then I'll go back to the Maxima that I was using.

Was really hoping to standardize the oil I use in all my bikes but it's not happening! A least not with the Zook anyway!

[b4himdude]

to standardize the oil I use in all my bikes but it's not happening! A least not with the Zook anyway! ------- kx pegger:   That would be the way to elimanate one thing from the memory bank huh? That's too bad. Well yesterday I went out on #2 ( the 95). And not even once did I experience any hard shifting at all. Haven't changed a thing with the bike. Actually wait I lied about that. I did depressuriZe the monoshock air chamber. But that should have nothing t all to do with it. I just didn't want to lie. So I don't know. Getting ready to put a quart of the amsoil in # 1 and give her a spin. What the hell. I'll save the oil when I drain it to rip Er open again. Out of everything from top to bottom of these bikes there one thing I hate the worst.     ( other than spoking and unspoking rims) that is putting on the drugged exhaust pipe. Anymore I just double nut every hanger on it . That way I don't lose a bolt every time or ever wven. But it sure is a pain in the ass. Thanks  oh and when I use my phone to type the letters I, o , and u are too close to one another for my fat fingers to get the right one all the time. So sometimes "o" meant "I"and that's just how it is
Guys

[b4himdude]

I can't friggen believe it. AMSOIL 10/40 dirt motocross tranny lube is the shiznit. I'd pay $20 a quart for this stuff. Not one hard shift since going to it in both my clutch/ gearbox. SB, F4B you guys are absolutely dead on by recommending that oil. I'll never run anything else. I may still be near as far shift fork pin flTening spots and the shift drum groove could be more to the minor wear side between the groove banks. But you wouldn't know it by riding the bikes now. As a matter of fact  in a timeframe at the moment where nothing is wrong wrong with either bike. #2 needs a rear suspension rebuild but as long as I boost the shock pressure every week or so. Or at least check it before I go play I'm good. Sooner or later I'll have to get a shift drum and some shift forks. Or maybe just the forks or the drum. What a good feeling it is to jump on either bike and not have something irritating me during playtime. Thanks and appreciated.