On 4/18/2024 8:48 PM, micky wrote:
> In alt.home.repair, on Wed, 17 Apr 2024 16:11:03 -0700, Bob F
> <bobnospam@gmail.com> wrote:
>
>> On 4/17/2024 2:37 PM, micky wrote:
>>> In alt.home.repair, on Wed, 17 Apr 2024 12:24:34 -0400,
>>> hubops@ccanoemail.com wrote:
>>>
>>>> On Mon, 15 Apr 2024 20:18:22 -0400, Clare Snyder <clare@snyder.on.ca>
>>>> wrote:
>>>>
>>>>> On Mon, 15 Apr 2024 12:12:52 -0400, hubops@ccanoemail.com wrote:
>>>>>
>>>>>> Just found these screws loose & missing
>>>>>> when changing over to summer tires -
>>>>>>
>>>>>> - I don't even know what they do ..
>>>>>> .. nor what they're called ? so I can look them up.
>>>>>>
>>>>>> https://imgur.com/a/xem0IO9
>>>>>>
>>>>>> John T.
>>>>> They keep the rotor or drum from falling off on the assembly line.
>>>>> Not a bad idea to keep them in place but they are not at all critical
>>>>>
>>>>
>>>> My brother raised the question - could a backed-out screw
>>>> interfere / affect the wheel seating flat against the disc ?
>>>> .. it seems possible - I'll need to check that, next time I have
>>>> a wheel off ..
>>>
>>> It does sound important. I'll check too, next time I have a screw
>>> loose.
>>>
>>
>> It is not really fair to give us such a straight line.... How can we
>> not bite?
>
> I did my part.

On Mon, 15 Apr 2024 20:21:23 -0400, Clare Snyder posted for all of us to
digest...

>
> On Mon, 15 Apr 2024 16:08:44 -0400, hubops@ccanoemail.com wrote:
>
> >On Mon, 15 Apr 2024 11:45:28 -0700, Bob F <bobnospam@gmail.com> wrote:
> >
> >>On 4/15/2024 9:12 AM, hubops@ccanoemail.com wrote:
> >>> Just found these screws loose & missing
> >>> when changing over to summer tires -
> >>>
> >>> - I don't even know what they do ..
> >>> .. nor what they're called ? so I can look them up.
> >>>
> >>> https://imgur.com/a/xem0IO9
> >>>
> >>> John T.
> >>
> >>You use screw bolts into those holes to remove the drum from the parking
> >>brakes if you cannot release the shoes sufficiently to allow it to be
> >>easily pulled off.
> >>
> >
> > Ha. Ha. Ha.
> >Any serious answers are appreciated.
> > John T.
> Actually on SOME drums the hole in the drum WAS threaded - on Japanese
> cars thery were M8. On those vehicles they WERE a built-in drum
> puller. However, on the picture shown they are NOT threaded, and the
> holes are countersunk, and they ARE just a fixture to hold the
> rotors/drums on the hub on the assembly line

+1 True

--
Hiram

On 4/15/2024 8:04 PM, Xeno wrote:
> On 16/4/2024 10:58 am, Bob F wrote:
>> On 4/15/2024 5:21 PM, hubops@ccanoemail.com wrote:
>>> On Mon, 15 Apr 2024 16:45:31 -0700, Bob F <bobnospam@gmail.com> wrote:
>>>
>>>> On 4/15/2024 3:36 PM, hubops@ccanoemail.com wrote:
>>>>> On Mon, 15 Apr 2024 18:28:29 -0400, micky <NONONOmisc07@fmguy.com>
>>>>> wrote:
>>>>>
>>>>>> In alt.home.repair, on Mon, 15 Apr 2024 16:08:44 -0400,
>>>>>> hubops@ccanoemail.com wrote:
>>>>>>
>>>>>>> On Mon, 15 Apr 2024 11:45:28 -0700, Bob F <bobnospam@gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> On 4/15/2024 9:12 AM, hubops@ccanoemail.com wrote:
>>>>>>>>> Just found these screws   loose  &  missing
>>>>>>>>> when changing over to summer tires  -
>>>>>>>>>
>>>>>>>>> -  I don't even know what they do   ..
>>>>>>>>> ..  nor  what they're called ? so I can look them up.
>>>>>>>>>
>>>>>>>>> https://imgur.com/a/xem0IO9
>>>>>>>>>
>>>>>>>>>       John T.
>>>>>>>>
>>>>>>>> You use screw bolts into those holes to remove the drum from the
>>>>>>>> parking
>>>>>>>> brakes if you cannot release the shoes sufficiently to allow it
>>>>>>>> to be
>>>>>>>> easily pulled off.
>>>>>>>>
>>>>>>>
>>>>>>>    Ha.  Ha.  Ha.
>>>>>>> Any serious answers are appreciated.
>>>>>>>     John T.
>>>>>>
>>>>>> Bob has a great sense of humor, however this time it was
>>>>>> misplaced.  The
>>>>>> screws that go there press the brake disk against the inner half
>>>>>> off the
>>>>>> caliper.  Without them, the brakes may not work.  Please get it fixed
>>>>>> soon.
>>>>>>
>>>>>
>>>>> Sheeesh.
>>>>>     John T.
>>>>
>>>> Have you looked at the video in my last reply?
>>>>
>>>
>>>   Yep.  It seems to deal with  drum brakes.
>>>     John T.
>>
>> Or disk/drums like my 04 Sienna rear brakes, or like yours. I can see
>> the parking brake cable coming in behind the disk at 4 o'clock in your
>> pic. If the holes are not threaded, I guess Clare is right.
>
> I saw the countersink but, on my small screen, couldn't tell if the
> holes were threaded. Eyesight isn't what it used to be!  :-(
>

AS a general rule "jack screw" holes are not countersunk . And
retainer screws always line up with a threaded hole in the axle flange .
At least that's been my experience in nearly 60 years of maintaining my
own vehicles . YMMV .
--
Snag
"They may take our lives but
they'll never take our freedom."
William Wallace