Dt1yz clutch cam not engaging rod

[Freakshow]

Ok so it was working when i took it off to clean it ( was fitting a new barrel for next weeks races) any how put it all back together and the clutch is a smooth as, weird, but its not engaging the rod ?

So i check the cam and it drive out so its moving but it seems to take up the 10mm freeplay through it movment and then at full stretch touches the rod end, not actually pushing it.

Tried pushing the rod and it wouldnt desengage the clutch, so i pulled the rod out and cleaned it, nothing still, then i thought the ball beaing insid the basket had moved or fell out of place, pulled the clutch out and the BB is still in there so that fine ( but i cant force the rod to push on the pressure plate release, well at least i cant feel it move or it must be under a ton of pressure,

anyhow i check the cam again  and it still looks like it short in total lenght of travel ( freeplay) by about 5-10mm, the little threeded ajuster bolt is in and it looks like the "gap" may have been filled by something else, but whats the somthing ?  the parts book doesnt show a BB in the cam end just the clutch button side.

### so my question is is there supposed to be somthing in the cam on the other side of the adjuster bolt inside of the  hole ##  ( see photo )  the distance from the top of the cam to the internal end is 13mm can someone tell me is that right or is ther somthing else in there. 

I have fished around in the cleaning bucket and nothing but dirt,  ideas anyone whats changed ?

this was working perfectly before i cleaned it so it must be something simple.  if i move the cam over one notch to another tooth it will make the travel ( just on the edge of falling out) but it hits the sprocket so it cant fit like that, it must be an internal gap thats not right.

IDEas ? does yours look like the picture,  can you tell me if you have one is there somthing in there or can you just see the thread section where the adjuster comes in.  Failing that confirm is it 13mm down into there.

this one got me stuffed what changed 

[mx250]

[cyclegod]

Sounds like the ball bearing fell out when you removed the rod, it happened to me on my HT1.

[vandy010]

my RT1 has a ball bearing in that same place Freaky, i'm with CG, it probably fell out.

[Freakshow]

So there is a ball bearing inside number 21 ?  I'm thinking it should have something in there but the explodes didnt show it (nor does the one MX put up) and i know the one at 13 is there cause checked when i though maybe it got jammed or moved when i cleaned the rod. 

So Are you saying there is one both end's then ? why is it not in the explodes or is it part of the cam module.............

I looked around on the floor last night for hours when i was scratching my head and also in the petrol tin i washed it in, but i came up with no missing bits.

So your saying there should be a Ball bearing inside the cam sitting on the end of the adjuster bolt and mates up to the rod end ? what size BB is it ( in mm please ) so i can track one down.  thanks guys.

[mx250]

   214-16351-00-00   PLATE, PRESSURE

http://www.yamaha-motor.com/sport/parts/home.aspx

[mx250]

MX 250 , what is the part number for  pos 9  , this looks like XS 650  , is it the same ?

A lot of Yammy clutch look the same from trail, to mx, to road. Some do interchange, some parts interchange but there is many a trap for a young player. I've spent many an hour scratching my head with probs similar to what Freaky is facing at the mo. I'm facing a similar puzzle at the mo. I've got everything to fit and work but the clutch cover doesn't fit by about 10mm I'm playing mix and match with RT, TY amd YZ bits .

Freaky, I have a RT1 on the bunch at the mo. It didn't have it's left side cover on when I started to work on it so I'm not certain about the BB behind or included with the cam. I have my doubts (its not necessary; it only needs one BB to allow the pushrod to be steady and the clutch to spin ).

I would go back over your work and make sure nothing is 'hung up' during the assembly and everything is in the correct order. I know I've made mistakes in the past and it by doubting, checking and not forcing things I have averted disaster. 

[mx250]

BTW Freaky, to state the bleating obvious, you have included part #12

[jimg1au]

Part # = 214-16351-00-00
Part Description = PLATE,PRESSURE
Model Count = 30
DS7 1972 250 DS7 Street
DT1 1968 250 DT1 Dual Purpose
DT1B 1969 250 DT1 Dual Purpose
DT1C 1970 250 DT1 Dual Purpose
DT1C-MX 1970 250 DT1MX Dual Purpose
DT1E 1971 250 DT1 Dual Purpose
DT1MX 1971 250 DT1MX Dual Purpose
DT1S 1969 250 DT1S Dual Purpose
DT2 1973 250 DT2 Dual Purpose
DT2MX 1972 250 DT2MX Dual Purpose
DT3 1973 250 DT3 Dual Purpose
MX250A 1974 250 MX250 Off-Road
MX360A 1974 360 MX360 Off-Road
R5 1970 350 R5 Street
R5B 1971 350 R5 Street
R5C 1972 350 R5 Street
RD250 1973 250 RD250 Street
RD250A 1974 250 RD250 Street
RD250B 1975 250 RD250 Street
RD350 1973 350 RD350 Street
RD350A 1974 350 RD350 Street
RD350B 1975 350 RD350 Street
RT1 1970 360 RT1 Off-Road
RT1B 1971 360 RT1 Off-Road
RT1M 1970 360 RT1M Off-Road
RT1MX 1971 360 RT1MX Off-Road
RT2 1973 360 RT2 Off-Road
RT2MX 1972 360 RT2MX Off-Road
RT3 1973 360 RT3 Off-Road
TY250A 1974 250 TY250 Trials

[Freakshow]

YEp part 12 is there , i know cause the problem was there before i thought about the  BB on theother side of the rod ( thoughit may have tangled up or moved) so i pull the pressure plate apart and saw the bearing a top the rod, even pulled it out to check using grease on no 12 to pull it out, so all the bits are there and i never touched the clutch side till i noticed it didnt work.

what evers happening is on the cam side.  the rod is in the right distance as i can see the seal wear marks on the shaft line up when its home, the fact that it seems short to the cam inside make me think there is somthing missing in that bloody cam, i pissed about with it for an hour with the cam in my hand watching it move out so it rotate up and out

Can some one confirm the distance inside the cam is 13mm in the hole from the top to the inner bolt ? that will tell me if there is somting missing in there.  i suspect its a BB or something about 5mm in size.

Like i said all i did was clean it and when i went to put it back on later its not hitting the rod at static, or pushing it in.  it probally short that 5mm, its got me stuffed ? as it was working fine before.

[Freakshow]

na , there every where, reackon i have abouot 5 in the shed.

VAndy did you confirm a BB goes in the cam  thingy end ?

[torm92]

Here is a thought , the outer pressure plate is sitting correctly on the centre hub. Take note of the arrows to make sure they alighn with the correct teeth . on some clutches there is only one way that they seat correctly.

[vandy010]

rodger that confirmation Freaky,
over.
basically, it's not shown in the exploded view but mine definately has a ball bearing inside that worm drive thingy. how do i know? because i've fallen victim to the same problem,
over...

[Freakshow]

Thanks vandy,  i can see the indent in the end of the rod and the adjuster where the BB would sit, so im with you it has to be in there,

Fn where i lost this one, just need to know the size of this BB now any idea ?

foot  note : i used a 6 mm BB and it did work, but i think it needs to be a 8mm as its just short of working properly.  Not sure what that is in imperial, so ill have to take some verniers with me when i go looking for some in the shops.

[Freakshow]

OK mental note for next time , size is 5/16 ball , same as the other side of rod.  ( go figure) 

wonder why it never made it to the parts book, meh must be part of the assembly itself.

Ohh well mystery solve thanks Vandy and guys.