Bob,
The dial test indicator's tip rests on the outside face of the long nut.
Cheers,
Bob Haskell
AHCA 3000 MkI registrar
http://www.ciahc.org/registry_3000mk1.php
On 08/23/2017 12:00 PM, Bob Spidell wrote:
> '... I made a long "nut", replacing the castellated axle nut, that
> sticks out the hub.'
>
> Why? The 'stock' nut is easy enough to get a socket on.
>
> Bob
>
>
> On 8/23/2017 2:59 AM, Bob Haskell wrote:
>> After seating the bearings, I'll put too many shims in and measure the
>> end float with a dial indicator mounted on the brake rotor with a
>> magnetic base. I made a long "nut", replacing the castellated axle
>> nut, that sticks out the hub.
>>
>> Cheers,
>>
>> Bob Haskell
>> AHCA 3000 MkI registrar
>> http://www.ciahc.org/registry_3000mk1.php
>>
>> On 08/23/2017 12:30 AM, Bob Spidell wrote:
>>> OK, I finally got off my duff and RTFM'd the Bentley manual; you are
>>> correct that there should be no end float (don't know where I got the
>>> 0.003"). Thanks for pointing this out.
>>>
>>> Bob
>>>
>>>
>>> On 8/22/2017 6:06 PM, Mirek Sharp wrote:
>>>>
>>>> For sure a Fairchild A10 would be a blast, but I would need a bigger
>>>> garage.
>>>>
>>>> There should be no perceptible end-float in the front hub assemble.
>>>> Follow the factory workshop, or Norm Nock?s guidance if you have his
>>>> tech tips. Set the end-float without any grease in the bearings
>>>> (and therefore leave the oil seal off). I spray a little WD-40 or
>>>> equivalent on the bearing as I can?t bear to spin them when dry, but
>>>> the WD-40 does not interfere with the feel you need to get no
>>>> end-play. On first assembly, leave the shims out and tighten the
>>>> nut while spinning the hub until there is noticeable drag. I like
>>>> to get quite a bit of drag, but without locking it up. This seats
>>>> the bearings. Then disassemble and reassemble, adding and
>>>> subtracting shims until there is no perceptible end-float, but no
>>>> drag. For those of us who do not do it for a living, be patient and
>>>> go over it several times until you are convinced you have it
>>>> right. Then, take it apart, pack the bearings, put the seal in and
>>>> re-assemble it. The nut gets torqued to between 40 and 70 lb/ft (at
>>>> least for a BT7). I always spin the hub while tightening. This
>>>> will lock the inner bearing races, spacer, and shims in compression
>>>> to the swivel axle (I think I mis-spoke and said hub in my previous
>>>> text). The oil seal does not get affected as it is in the hub and
>>>> turns on the polished boss on the swivel axle, not the spacer (which
>>>> would tear it to bits in a few miles).
>>>>
>>>> Now I want to go searching for Warthog videos.
>>>>
>>>> Cheers,
>>>>
>>>> Mirek
>>>>
>>>> *From:*Healeys [mailto:healeys-bounces at autox.team.net] *On Behalf Of
>>>> *Bob Spidell
>>>> *Sent:* August-22-17 10:43 AM
>>>> *To:* healeys at autox.team.net
>>>> *Subject:* Re: [Healeys] Shims
>>>>
>>>> Couple things:
>>>>
>>>> 1) I'm too lazy to fetch my Bentley (manual), but I think the spec
>>>> is 0.003"--i.e. just a smidge--of end float on the stub axles, to
>>>> allow for expansion of the bearings when warm. Please correct me if
>>>> I'm wrong as I'm going into my axles soon.
>>>>
>>>> 2) putting all in compression--a lot of compression--also locks the
>>>> inner spacer--the one the seal rides on, lest it spin
>>>>
>>>> 3) I would love to have a Warthog (A-10)*
>>>>
>>>> Bob
>>>>
>>>> * Many years ago, I was preparing to depart Burbank airport in my
>>>> Cherokee, there was a couple of spotless, sparkling Warthogs,
>>>> resplendent in an (almost) BRG paint, parked on the ramp, with
>>>> canopies up and flight ladder extended (pre 9/11, of course). They
>>>> must have been coming from or going to a nearby airshow. I'm
>>>> thinking, 'Gee, I wonder if they left the keys in ...'
>>>>
>>>> On 8/21/2017 9:03 PM, Mirek Sharp wrote:
>>>>
>>>> ?Only? somewhat technical packing pieces? Don?t under-estimate
>>>> their importance. When fully tightened with zero end-float, the
>>>> ?tube? created around the stub axle created by putting, inner
>>>> races, spacer, shims, washer and nut into compression against the
>>>> hub act as a structural member and take some of the load off of
>>>> the stub axle, which is prone to cracking if the correct procedure
>>>> is not followed, as we all know.
>>>>
>>>> If I do not have the correct new shim that I need to hand, I will
>>>> re-use old ones providing they have not been battered or
>>>> creased. Also, I try to use the combination of thickest shims I
>>>> can to
>>>> remove end-float. It should not matter as they are in
>>>> compression, but I had a crank shim in my BSA Road Rocket break up
>>>> once with dire consequences. In that application, the
>>>> engineering, in my opinion, is a bit dodgy as the shims were used
>>>> to set end-float on the crank, which I seem to recall was 0.002?.
>>>> I had included a thin shim in the combination and that small
>>>> amount of movement, at engine speeds, was enough to pound the
>>>> thing to pieces. When I rebuild it I worked out the thickness of
>>>> shims needed and had a machinist surface grind one thick shim for
>>>> me. Not necessary for the Healey wheel bearings, but if any of
>>>> you have an A10 ?.
>>>>
>>>> Mirek
>>>>
>>>> *From:*Healeys [mailto:healeys-bounces at autox.team.net] *On Behalf
>>>> Of *Simon Lachlan
>>>> *Sent:* August-21-17 6:49 AM
>>>> *Subject:* [Healeys] Shims
>>>>
>>>> Hi,
>>>>
>>>> With reference to front wheel bearing shims, I shall be replacing
>>>> the bearings in my MkII?s front RHS when winter has set in. (Won?t
>>>> be long!)
>>>>
>>>> Anyhow, I?ve half a pack of unused shims left and there will be
>>>> others in the hub. Is there any reason why I can?t reuse some/all
>>>> of the old ones &/or mix and match them with some of the new ones?
>>>>
>>>> As I see it, we use the shims to get the correct end float so,
>>>> provided the shims? metallurgy(?) was correct in the first place,
>>>> the old one will still be good to go??? They?re only somewhat
>>>> technical packing pieces???
>>>>
>>>> As ever, I stand ready to be corrected.
>>>>
>>>> Simon
>>>>
>>>>
>>>>
>>>
>>>
>>>
>
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