[JAGNUTS] FW: Help Requested

[Bob]

-----Original Message-----
From: Howard Jesse [mailto:howard.jesse at sasktel.net] 
Sent: April 13, 2013 11:36 AM
To: Bob
Subject: Re: [JAGNUTS] Help Requested

Bob thanks for posting my inquiry: Ed and Chris:  Thank you for your
responses.  Indeed, I should have provided more detail on the circumstances
that cause the noise.  From the first drive in 2007 after the body off resto
the noise has been present.  When I did the original rebuild of the rear end
all components were removed and replaced including the trunion arm bushings,
both seals, bearings and all new ujoints.  The rear diff was evaluated by a
mechanic  and deemed in great shape -- the seals were replaced.  The noise
is not apparent under acceleration, only deceleration and seems not to be
any worse while cornering.  I have replaced the ujoints twice since, I I had
a challenge with the extended grease nipples snapping off during
installation and replaced them with a short nipple making any lube very
difficult.  The nipples are not binding.  I did not change the axels in the
initial rebuild although I detected wear on the shaft from the inner race
bearing -- I am told this is common, however I regret ignoring the advice to
change the axels.  Could this sound be caused by the bearing?  It does not
sound like a bearing although it may be resonating through the axel itself?
I have ordered new axels and will replace along with all new bearing
inner/outer and new u joints.  I am guessing one of the axles my be bent
which I surmise would cause the ujoints to run out and either throw the
joint or cause the knocking noise due to binding.  I have also found some
replacement yokes sensing they may also be bent or have been damaged if the
axels are bent.  I will proceed with the complete rebuild including all the
ujoints and verify if they are moving inside the yoke.  Any mechanics out
there with experience in this area interested in the job.  Also I need to
rent or borrow the hub puller ( I am told unique to the Spitfire) I pressed
the hubs off during the initial resto which may have also caused damage to
the axels.  Appreciate your help will join you for one of the coffee dates.




On 2013-04-12, at 7:54 AM, Bob wrote:

> 
> 
> -----Original Message-----
> From: jagnuts-bounces at autox.team.net 
> [mailto:jagnuts-bounces at autox.team.net]
> On Behalf Of EdB
> Sent: April 12, 2013 12:23 AM
> To: JAGNUTS Regina
> Subject: Re: [JAGNUTS] Help Requested
> 
> Chris:
> 
> Howard should have given information on what happens under 
> acceleration, or deceleration, breaking and cornering.  Does the noise 
> remain the same?  Is there noise on one side or both sides?
> 
> Generally, if the  noise is a knock or rattle on deceleration, but not 
> on acceleration,  it is probably u-joint noise which can be caused by 
> wear of the u-joint itself, but can also be a loose fit of the yoke 
> flange circlips, causing end float in the u-joint.  If it is end float
shimming could fix it.
> 
> Continuous noise, with no change on either acceleration or 
> deceleration, but is louder on one side of the car is a possible wheel
bearing noise.
> 
> Continuous noise, but, loudest on acceleration could be a differential 
> problem, but knocking, vibration or a rattle are usually NOT caused by 
> the differential.
> 
> Ed Bratt
> Regina
> 
> 
> ----- Original Message -----
> From: "Chris" <chris.treecutter at gmail.com>
> To: "JAGNUTS Regina" <jagnuts at autox.team.net>
> Sent: Thursday, April 11, 2013 11:29 PM
> Subject: Re: [JAGNUTS] Help Requested
> 
> 
>> Radius arm bushings, or a stressed brake line. Unlikely a bearing 
>> would "knock"
>> 
>> 
>> 
>> On 2013-04-11, at 8:55 PM, "Bob" <bob at jagnuts.ca> wrote:
>> 
>>> I received the following note from a reader of the Jagnuts website.  
>>> Can anyone help Howard out?
>>> 
>>> 
>>> 
>>> Ii have totally restored a 78 spitfire and have a constant noise in 
>>> the
>> rear
>>> -- i think it is an axle joint issue.  During the restore i 
>>> completely rebuilt the rear end with the exception of new axles, 
>>> they are prone to
>> wear
>>> due the undersized inner bearing.  I have since changed the ujoints 
>>> but the knock persists.  I have ordered new axles, bearings and 
>>> seals and would
>> like
>>> to know if you have any insight into club members or local mechanics 
>>> who are knowledgable in this area.  I would like to get a mechanic 
>>> to help me with this rebuild to get it right this time.  i hope to 
>>> meet up with you or other club members and will follow your events 
>>> calendar. I would appreciate any advice at your earliest 
>>> convenience.
>>> 
>>> Howard Jesse
>>> 
>>> howard.jesse at sasktel.net
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>> 
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Howard Jesse
howard.jesse at sasktel.net