Here are a couple of photos, when I look at primary gears online it looks like mine is missing something on the outside near the oil holes? Also my casing is chewed a little as seen, will this be an issue?
Cheers,
Steve
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| 998 primary gear 1968 model https://www.ausmini.com/forums/viewtopic.php?f=2&t=91381 |
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| Author: | mooman10_0 [ Mon Dec 28, 2015 8:18 am ] |
| Post subject: | 998 primary gear 1968 model |
Hi everyone, Just looking through the engine and although the primary gear doesnt seam to have any play on the crank, on the outer side where the primary gear makes contact with the primary gear seal (about where the oil holes are) it is not flat, it s concave, when I run my finger across it it is definately not flat, it is meant to be? Just wondering if i should replace or not. Cheers, Steve |
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| Author: | mooman10_0 [ Mon Dec 28, 2015 9:07 am ] |
| Post subject: | Re: 998 primary gear 1968 model |
Here are a couple of photos, when I look at primary gears online it looks like mine is missing something on the outside near the oil holes? Also my casing is chewed a little as seen, will this be an issue? Cheers, Steve |
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| Author: | drmini in aust [ Mon Dec 28, 2015 9:40 am ] |
| Post subject: | Re: 998 primary gear 1968 model |
That's NBG, go find a less worn one. 998/1098 ones are common. Yours is missing the slinger too (if it had one). |
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| Author: | mooman10_0 [ Mon Dec 28, 2015 10:04 am ] |
| Post subject: | Re: 998 primary gear 1968 model |
Thanks for that, does is matter about the wear on the vlutch housing? Cheers, steve |
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| Author: | drmini in aust [ Mon Dec 28, 2015 11:12 am ] |
| Post subject: | Re: 998 primary gear 1968 model |
mooman10_0 wrote: Thanks for that, does is matter about the wear on the vlutch housing? Cheers, steve You will need thicker thrust washers, assemble the cover to the gearbox BEFORE you bolt the motor on, set idler gear endfloat around .004" - .006". Note you can get gaskets in various thickness, I've seen some down to .022" thick. Common ones are .033" approx. If you can't get thick enough washers, get a machine shop to mill the gasket face down by the amount of wear step at the thrust washer boss measureed with a depth micrometer or vernier caliper. You can go .005 or so more, thin thrust washers are easier to find than thickest ones. EDITED after checking a housing. |
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| Author: | mooman10_0 [ Mon Dec 28, 2015 11:33 am ] |
| Post subject: | Re: 998 primary gear 1968 model |
Thanks for that 
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| Author: | mooman10_0 [ Mon Dec 28, 2015 12:18 pm ] |
| Post subject: | Re: 998 primary gear 1968 model |
looking around all the usual sites and no one tends to have new idler thrust washers, do they not make these any more? Cheers, Steve |
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| Author: | drmini in aust [ Mon Dec 28, 2015 12:35 pm ] |
| Post subject: | Re: 998 primary gear 1968 model |
mooman10_0 wrote: looking around all the usual sites and no one tends to have new idler thrust washers, do they not make these any more? Cheers, Steve NOTE my edit to post above. Not easy to find new but I have ALL the local Mini shop's stock of s/h ones. Let me know what you need. Thickest I have are .136" I think. I can surface grind down to whatever you need. |
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| Author: | mooman10_0 [ Mon Dec 28, 2015 12:38 pm ] |
| Post subject: | Re: 998 primary gear 1968 model |
Awesome, thanks for that. Will contact when im up to putting it back together
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| Author: | TheMiniMan [ Mon Dec 28, 2015 12:58 pm ] |
| Post subject: | Re: 998 primary gear 1968 model |
I would be checking that you have both the dowels in the "Block to box" & the correct dowels for the "primary case to gearbox" looks like the "primary case" doesn`t line up correctly with the crank center line to me i`d be looking carefully at all those alignment & centering issues to be honest going by the offset shown with the gouging in the primary case from attempting to remove the primary gear |
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| Author: | mooman10_0 [ Mon Dec 28, 2015 1:22 pm ] |
| Post subject: | Re: 998 primary gear 1968 model |
Will definately check it all when its time to put back together
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| Author: | drmini in aust [ Mon Dec 28, 2015 1:42 pm ] |
| Post subject: | Re: 998 primary gear 1968 model |
I agree with Matt, something is not quite right in the alignment. |
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| Author: | mooman10_0 [ Mon Dec 28, 2015 1:55 pm ] |
| Post subject: | Re: 998 primary gear 1968 model |
Could it be anything to do with idler bearings? Both getting replaced as were in poor shape. |
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| Author: | mooman10_0 [ Mon Dec 28, 2015 2:27 pm ] |
| Post subject: | Re: 998 primary gear 1968 model |
I checked block, pins are non existant or nt long enough as is one on the housing. Are these still available ( name of item)? How hard to put in/ take out? Cheers, Steve |
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| Author: | drmini in aust [ Mon Dec 28, 2015 2:39 pm ] |
| Post subject: | Re: 998 primary gear 1968 model |
Matt would have some, new or s/h. Both dowels are in the gearbox, not the block. |
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