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Craftsman lawn mower scalps lawn- need advice

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Craftsman lawn mower scalps lawn- need advice George Abbot 05-26-2008
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Posted by George Abbot on May 30, 2008, 7:48 am
dpb wrote:
> George Abbot wrote:
> ...
>
>> So how do you get the mandrel and ball bearing unit out of the collar
>> so only the mandrel needs to be replaced? Be nice to have a spare.
>
> Best would be to see a picture so can tell how it's put together. W/O
> seeing, no great ideas other than it possibly will require a press.
>
> --

Thanks for the reply.

The IPB shows the mandel, collar and bearing assembly so the mandrel goes into
the collar and the bearing
assembly is at the top of the shaft in the collar. Fairly simple so it probably
is a press issue. I do not see
any clips, keys or anything else to keep the shaft of the mandrel in the collar.

GA

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Posted by dpb on May 30, 2008, 12:39 pm
George Abbot wrote:
> dpb wrote:
>> George Abbot wrote:
>> ...
>>
>>> So how do you get the mandrel and ball bearing unit out of the collar
>>> so only the mandrel needs to be replaced? Be nice to have a spare.
>>
>> Best would be to see a picture so can tell how it's put together. W/O
>> seeing, no great ideas other than it possibly will require a press.
>>
>> --
>
> Thanks for the reply.
>
> The IPB shows the mandel, collar and bearing assembly so the mandrel
> goes into the collar and the bearing assembly is at the top of the shaft
> in the collar. Fairly simple so it probably is a press issue. I do not
> see any clips, keys or anything else to keep the shaft of the mandrel in
> the collar.

What shape is the shaft in? Shine it up so don't have extra crap to put
thru the bearing and use some good penetrating oil--something other than
WD40 that will actually have a chance of getting wicked in.

Then, if you don't care about possibly wiping the bearings, a bigger
hammer is the tool if don't have press or can't cobble up something out
of the scrap pile to use w/ a hand jack or don't want to take it to a
machine shop.

--

Posted by dpb on May 30, 2008, 3:29 pm
dpb wrote:
...
> Then, if you don't care about possibly wiping the bearings, a bigger
> hammer is the tool if don't have press or can't cobble up something out
> of the scrap pile to use w/ a hand jack or don't want to take it to a
> machine shop.

One last note -- depending on the shape, it is sometimes possible to
pull the bearing off a shaft instead of pressing driving the shaft out
of the bearing if you can somehow find a way to get a purchase w/ the
puller legs and press against the shaft end from the right direction.

--

Posted by George Abbot on May 31, 2008, 7:19 am
dpb wrote:
> dpb wrote:
> ...
>> Then, if you don't care about possibly wiping the bearings, a bigger
>> hammer is the tool if don't have press or can't cobble up something
>> out of the scrap pile to use w/ a hand jack or don't want to take it
>> to a machine shop.
>
> One last note -- depending on the shape, it is sometimes possible to
> pull the bearing off a shaft instead of pressing driving the shaft out
> of the bearing if you can somehow find a way to get a purchase w/ the
> puller legs and press against the shaft end from the right direction.
>
> --

Thanks for the help.

GA

Posted by dpb on May 31, 2008, 8:27 am
George Abbot wrote:
> dpb wrote:
>> dpb wrote:
>> ...
>>> Then, if you don't care about possibly wiping the bearings, a bigger
>>> hammer is the tool if don't have press ...
...
> Thanks for the help.
>
> GA

No problem...of course, if you choose this route, remember the hardwood
or brass block, not the hammer directly on the shaft. Of course, this
shaft is toast anyway, but in general...

--

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