Clutch and thrust bearing

G

Guest

Guest
Hi all,
A rattly noise has started to emanate from the bellhousing of my 1997 80
series GX manual. I therefore suspect that the clutch thrust bearing is
dying and so it's time to change it and the clutch.
Forgive the naive question, but do I really need to remove the
driveshafts and drop out the gearbox and transfer box in order to change
the clutch and the thrust bearing?? It seems quite a major task to do
such a 'normal' service.
Thanks :)
Andy Bell
1997 GX Manual UK Spec
 
G

Guest

Guest
Does the noise go when there's some pressure on the clutch pedal? That's
another thrust bearing indicator.
Yes, you do have to separate the gearbox from the engine unfortunately.
Best regards,
Jon.
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Andy Bell
Sent: 26 October 2005 13:58
To: [Email address removed]
Cc: [Email address removed]
Subject: [ELCO] Clutch and thrust bearing
Hi all,
A rattly noise has started to emanate from the bellhousing of my 1997 80
series GX manual. I therefore suspect that the clutch thrust bearing is
dying and so it's time to change it and the clutch.
Forgive the naive question, but do I really need to remove the
driveshafts and drop out the gearbox and transfer box in order to change
the clutch and the thrust bearing?? It seems quite a major task to do
such a 'normal' service.
Thanks :)
Andy Bell
1997 GX Manual UK Spec
 
G

Guest

Guest
Hi Andy,
Does the noise quieten down when you put your foot on the clutch?
Unfortunately you do - I am sure that someone has managed to do it without
dropping the gearbox, but I can't see how and it will most likely be a case
that they could probably have done it in half the time if they had dropped
the box.
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
G

Guest

Guest
Hi Andy,
Does the noise quieten down when you put your foot on the clutch?
Unfortunately you do - I am sure that someone has managed to do it without
dropping the gearbox, but I can't see how and it will most likely be a case
that they could probably have done it in half the time if they had dropped
the box.
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
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G

Guest

Guest
Hi all - yes, the noise changes when you depress the clutch. The rattle
is quite marked when you lie under the car - almost like a really badly
adjusted valve - but a bit more intermittent.
Has anyone here ever taken their gearbox out before? If so, any
tips/essential equipment??
Cheers,
Andy
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Julian Voelcker
Sent: 26 October 2005 16:00
To: [Email address removed]
Subject: Re: [ELCO] Clutch and thrust bearing
Hi Andy,
80
is
Does the noise quieten down when you put your foot on the clutch?
change
Unfortunately you do - I am sure that someone has managed to do it
without
dropping the gearbox, but I can't see how and it will most likely be a
case
that they could probably have done it in half the time if they had
dropped
the box.
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
G

Guest

Guest
I've not dropped an LC box but they're all much the same. It will be
very heavy so you need a helper to pull it off. Make sure it's well
supported when you get it onto the jack. The transfer box will also be
heavy and is offset so keeping it all stable may be 'interesting'. To do
the thrust bearing you can leave the box on the floor under the car, or
on the jack and just move it back/down far enough to get into the bell
housing comfortably.
Do you have the FSM? I can send you the 6 scanned pages for box removal
and installation if not.
Best regards,
Jon.
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Andy Bell
Sent: 26 October 2005 16:10
To: [Email address removed]
Subject: RE: [ELCO] Clutch and thrust bearing
Hi all - yes, the noise changes when you depress the clutch. The rattle
is quite marked when you lie under the car - almost like a really badly
adjusted valve - but a bit more intermittent.
Has anyone here ever taken their gearbox out before? If so, any
tips/essential equipment??
Cheers,
Andy
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Julian Voelcker
Sent: 26 October 2005 16:00
To: [Email address removed]
Subject: Re: [ELCO] Clutch and thrust bearing
Hi Andy,
80
is
Does the noise quieten down when you put your foot on the clutch?
change
Unfortunately you do - I am sure that someone has managed to do it
without
dropping the gearbox, but I can't see how and it will most likely be a
case
that they could probably have done it in half the time if they had
dropped
the box.
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
G

Guest

Guest
Hi Jon,
I only have the engine manual at the moment. It would be REALLY helpful
if you could send the box removal/installation pages over. Thanks :)
Andy
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Jon Wildsmith
Sent: 26 October 2005 16:25
To: [Email address removed]
Subject: RE: [ELCO] Clutch and thrust bearing
I've not dropped an LC box but they're all much the same. It will be
very heavy so you need a helper to pull it off. Make sure it's well
supported when you get it onto the jack. The transfer box will also be
heavy and is offset so keeping it all stable may be 'interesting'. To do
the thrust bearing you can leave the box on the floor under the car, or
on the jack and just move it back/down far enough to get into the bell
housing comfortably.
Do you have the FSM? I can send you the 6 scanned pages for box removal
and installation if not.
Best regards,
Jon.
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Andy Bell
Sent: 26 October 2005 16:10
To: [Email address removed]
Subject: RE: [ELCO] Clutch and thrust bearing
Hi all - yes, the noise changes when you depress the clutch. The rattle
is quite marked when you lie under the car - almost like a really badly
adjusted valve - but a bit more intermittent.
Has anyone here ever taken their gearbox out before? If so, any
tips/essential equipment??
Cheers,
Andy
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Julian Voelcker
Sent: 26 October 2005 16:00
To: [Email address removed]
Subject: Re: [ELCO] Clutch and thrust bearing
Hi Andy,
80
is
Does the noise quieten down when you put your foot on the clutch?
change
Unfortunately you do - I am sure that someone has managed to do it
without
dropping the gearbox, but I can't see how and it will most likely be a
case
that they could probably have done it in half the time if they had
dropped
the box.
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
G

Guest

Guest
PM sent.
Best regards,
Jon.
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Andy Bell
Sent: 27 October 2005 08:16
To: [Email address removed]
Subject: RE: [ELCO] Clutch and thrust bearing
Hi Jon,
I only have the engine manual at the moment. It would be REALLY helpful
if you could send the box removal/installation pages over. Thanks :)
Andy
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Jon Wildsmith
Sent: 26 October 2005 16:25
To: [Email address removed]
Subject: RE: [ELCO] Clutch and thrust bearing
I've not dropped an LC box but they're all much the same. It will be
very heavy so you need a helper to pull it off. Make sure it's well
supported when you get it onto the jack. The transfer box will also be
heavy and is offset so keeping it all stable may be 'interesting'. To do
the thrust bearing you can leave the box on the floor under the car, or
on the jack and just move it back/down far enough to get into the bell
housing comfortably.
Do you have the FSM? I can send you the 6 scanned pages for box removal
and installation if not.
Best regards,
Jon.
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Andy Bell
Sent: 26 October 2005 16:10
To: [Email address removed]
Subject: RE: [ELCO] Clutch and thrust bearing
Hi all - yes, the noise changes when you depress the clutch. The rattle
is quite marked when you lie under the car - almost like a really badly
adjusted valve - but a bit more intermittent.
Has anyone here ever taken their gearbox out before? If so, any
tips/essential equipment??
Cheers,
Andy
-----Original Message-----
From: [Email address removed] [mailto:[Email address removed]]
On Behalf Of Julian Voelcker
Sent: 26 October 2005 16:00
To: [Email address removed]
Subject: Re: [ELCO] Clutch and thrust bearing
Hi Andy,
80
is
Does the noise quieten down when you put your foot on the clutch?
change
Unfortunately you do - I am sure that someone has managed to do it
without
dropping the gearbox, but I can't see how and it will most likely be a
case
that they could probably have done it in half the time if they had
dropped
the box.
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
G

Guest

Guest
Andy wrote...
Hi all - yes, the noise changes when you depress the clutch. The rattle
is quite marked when you lie under the car - almost like a really badly
adjusted valve - but a bit more intermittent.
Has anyone here ever taken their gearbox out before? If so, any
tips/essential equipment??
SNIP
Hold on Andy, it may not be the thrust bearing.
OK, I have not had one go in an 80, so have never heard a dodgy one. But
have had layshaft bearings let go. And I have done plenty of clutches in my
time from Mini's to combine harvesters. If you hear an intermittent rattle
which disappears when you depress the clutch, think that a bad thrust
bearing will make a noise when the clutch is depressed but not when the
pedal is let out. After all, the thrust bearing should not be in contact
with the pressure plate fingers and should be at rest and not rotating when
its standing at tickover. Though I admit a noise could come from the pilot
bearing in the middle of the flywheel, but that is usually a dry screetch
when it goes. Usually if the thrust bearing makes noises then the
performance of the clutch is pretty bad too, unless a clutch has been
replaced without a new thrust bearing. How is your clutch ?
So try something else. Drive with the passenger window wound down and
choose a quiet road with an Armco barrier alongside it or a long brick or
drystone wall. See if you can hear the same rattle reflected from the wall
when you are travelling. Go through the gears, and particularly notice if
it ceases in fourth gear but starts again when in fifth. In fourth the
drive train is straight through the mainshaft and the layshaft is
disconnected, so the bearings don't rattle, but they do in 1st, 2nd, 3rd & 5th.
Yes, if its quiet in fourth then suspect the layshaft bearings are on their
way out. You will have to change the clutch anyway if you have the gearbox
out, if only cos you don't want the expense and hassle again in the near
future. So at that time I would get someone to look at the box. A temporary
fix can be a replacement rear bearing which can be done with the gearbox in
the truck if you can get an expert to diagnose the problem before splitting
it all - it was done on mine anyway. But you need to do all of the bearings
whilst you are at it if the box is out.
I need to get my front layshaft bearing done, so if you find a good gearbox
man then please let us all know. But didn't one of you Devon boys write
some while ago that there was a good Toy gearbox place in Exeter somewhere?
Has that made sense everyone? I have not had a glassful tonight yet I
promise ;o)
Cheers
Jon
Grand Union Canal
'92 HZJ80 ex UN surplus from Bosnia
 
G

Guest

Guest
Hi Jon,
Thanks very much for the mighty gearbox missive. It makes a lot of
sense and I will mostly be out looking for a long stone wall this
weekend to drive along!
As you say, I think the best bet is to get an expert opinion. I am
therefore going to take it to an agricultural/4x4 gearbox specialist in
Blackburn as soon as I can. I will report back on the list as to what
they are like, and what the problem turned out to be.
Cheers for now,
Andy
 
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