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Post by jonisingt35r on Sept 4, 2016 17:10:57 GMT
Sorry to clutter up this forum, Got my drive shaft in and the gear shaft in but
I'm not sure if they are aligning up properly on my gear shaft ive got two spacers for some reason in the haynez book there is only one. If I take one out the whole cluster looks really loose.
It looks like gear 3 is aligned properly but 4th looks kind of off centre.
Should the two washers be on the back of gear 4 I've got them one one on either end of the gears really stuck.
Thank you
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Post by doulsy on Sept 4, 2016 17:29:57 GMT
Stick some pictures up, it might help my memory, its been 8 month sinceb my rebuild,i remember a spacer on clutch side after the cases are together
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Post by jonisingt35r on Sept 4, 2016 17:43:08 GMT
1drv.ms/f/s!ApXeX3nVMpWN9ASR_x4dn_gj1Bfg Not sure if you can make much sense.
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Post by henri on Sept 4, 2016 17:46:21 GMT
right , early single circlip shafts have only 1 thrust washer on the selecter box end .later efl 2 circlip shafts have 2 thrust washers ,1 at each end of the shaft nxt to circlips ok . are you sure you havent got 4th gear on back to front .H
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Post by jonisingt35r on Sept 4, 2016 18:02:04 GMT
I'll remove the shaft again and lay out the gears as I've got them installed it does look like it's in the manual Here you are this how I've got it set up 1drv.ms/i/s!ApXeX3nVMpWN9AVDCrv2AFRUXQS4
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Post by vespasco on Sept 4, 2016 18:43:27 GMT
No pictutre
If you're taking out the driveshaft....
You can leave the cruxifom in place. Fit the circlip closest to the rear wheel. Followed by one of the thrust washers/shims...which should be 1.0mm if they are stock. Fit 4th gear. The flatter side goes towards the circlip and shim. The centre of one side of this cog has an upstand. This goes towards the gear selector.
Lift the cruxiform on top of the 4th gear. Fit 3rd. Check to see the gears spin on this centre upstand (as mentioned above). There's not much space there for the crux but it's enough. There's not much space between the edge of the cogs either.
Fit 2nd in the same way but this time there will be a bigger gap between the edge of the cogs
1st is similar to 4th, where the flatter side goes towards the circlip and shim
Fit the second shim. Then the circlip.
There is a way of checking these are up to Piaggio specs, to see if the gears are too loose or not.
Assemble all the gears and circlips and shims and measure the tolerance between 1st gear and the shim. There is a special tool to do this but you can use 2 x feeler gauges just as well. The tolerance on assembly should be between 0.15mm - 0.40mm, where 0.15mm would be ideal. If it's more than that you can buy the next sized shim which is either 1.1mm or 1.2mm, I can't recall which.
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Post by jonisingt35r on Sept 4, 2016 18:54:51 GMT
C
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Post by vespasco on Sept 4, 2016 19:03:24 GMT
sorry i still can't see your pics.
I'm not sure but I think you need to use photobucket or something similar to upload pics on this forum.
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Post by jonisingt35r on Sept 4, 2016 19:03:44 GMT
C
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Post by vespasco on Sept 4, 2016 19:06:08 GMT
sorry no thats the same link that does not appear to work on this forum
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Post by jonisingt35r on Sept 4, 2016 19:14:31 GMT
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Post by doulsy on Sept 4, 2016 19:32:44 GMT
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Post by jonisingt35r on Sept 5, 2016 10:53:42 GMT
Wonder if somebody could tell me if gears are in properly I have one washer 1.1mm ish on the back of grear1, and a larger 1.6 ish washer on the back of gear 4 I'm sure it is setup as the manual the gap between gear 2 and 3 does look a bit big? But if I look straight at the gears they doo sort of line up except for gear 4 which seems to be slightly off the opposit cog? Is it all systems go? I can see the 4th gear and both cogs are slightly overlapping a small fracrion, so I'm thinking they all are a little bit, thats when the input shaft is place.
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Post by doulsy on Sept 5, 2016 15:14:05 GMT
Will upload a picture of mine when i get home
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Post by jonisingt35r on Sept 5, 2016 15:52:01 GMT
Thank you.
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Post by doulsy on Sept 5, 2016 17:33:00 GMT
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Post by vespasco on Sept 5, 2016 18:16:04 GMT
That does look correct to me jonising Do also check your gears spin freely with the cruxiform inbetween them.
The smaller shim will go towards the rear wheel side, the over sized shim will go to the gear selector side. Check the tolerane, inbetween 0.15mm - 0.4mm
Thats the old style gearbox there Doulsy not much difference in the gaps but O.P. gearbox is a late type.
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Post by jonisingt35r on Sept 5, 2016 19:13:24 GMT
Thank you for that mated both caseings together sort of ran smooth ish and does spin when gear selector is between gears.
So I'll go with that I think
Cheers
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Post by doulsy on Sept 5, 2016 20:46:47 GMT
That does look correct to me jonising Do also check your gears spin freely with the cruxiform inbetween them. The smaller shim will go towards the rear wheel side, the over sized shim will go to the gear selector side. Check the tolerane, inbetween 0.15mm - 0.4mm Thats the old style gearbox there Doulsy not much difference in the gaps but O.P. gearbox is a late type. think i only have one shim, would that be right?
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Post by vespasco on Sept 6, 2016 16:20:45 GMT
One shim is correct for you Doulsy. Fitted towards the gear selector side with the circlip. Yours is the old style gearbox with a large 'collar' on the drive shaft rather than a circlip and shim as on the later type. I think yours has the same tolerances Doulsy... 0.15 - 0.40mm Worth checking if you have it on the bench.
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Post by doulsy on Sept 7, 2016 20:25:21 GMT
One shim is correct for you Doulsy. Fitted towards the gear selector side with the circlip. Yours is the old style gearbox with a large 'collar' on the drive shaft rather than a circlip and shim as on the later type. I think yours has the same tolerances Doulsy... 0.15 - 0.40mm Worth checking if you have it on the bench. Engine was built up in the winter and is now run in, think i might of checked it with the guys on here, checked everthing else lol
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Post by henri on Sept 8, 2016 5:48:56 GMT
if it aint broke ,dont try to fix it til it is . H
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