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#Post#: 102335--------------------------------------------------
Bit of help diagnosing rear axle problem
By: pintofale Date: June 13, 2017, 7:42 am
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I lost drive on the way to work this morning - had to put it in
four wheel drive to get going. When I got to work I was able to
spin the rear propshaft freely with my hands. I drove home with
front wheel drive and jacked up the back end. With the engine
running in normal drive mode (i.e. rear wheels) the propshaft
turns but there is no drive to the wheels. With the engine off,
if I spin a wheel I can see the propshaft turn occasionally but
usually it doesn't. This is the same for both wheels.
Anyone want to have a guess what's going on? Is there some more
testing I can do? My next move is to take out the halfshafts
and check them, but I am limited for time at the weekend so if
someone can point me in the right direction it would be
appreciated - also would give me time to buy in the right part.
Thanks!
#Post#: 102336--------------------------------------------------
Re: Bit of help diagnosing rear axle problem
By: kev Date: June 13, 2017, 8:22 am
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Pull the shafts out, it's easy and you can do it without jacking
it up.
If you've bust one (prolly the short one) you'll need to have
the diff out and clean out all the swarf and the broken end.
#Post#: 102337--------------------------------------------------
Re: Bit of help diagnosing rear axle problem
By: pintofale Date: June 13, 2017, 9:11 am
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Ok, thanks Kev, was just wondering if there was anything else I
could do to confirm its a halfshaft first. I will whip the short
one out tonight if I get chance.
Any reason why the shorter one tends to break? Something to do
with roundabouts? :)
#Post#: 102338--------------------------------------------------
Re: Bit of help diagnosing rear axle problem
By: pintofale Date: June 13, 2017, 11:07 am
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I have just had a look at this, the bad news is the short one
will not come out. It budges about 1/4 inch, no more. I got a
rope round it and hauled it, no joy. It rotates right round
though. I had to give up and bolt it back up. Tried the other
side and it came out dead easy, and it looks ok. What do I do
now?
#Post#: 102340--------------------------------------------------
Re: Bit of help diagnosing rear axle problem
By: kev Date: June 13, 2017, 1:16 pm
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If you can get hold of a suitable sized stout iron bar, take out
the long halfshaft, and try and bash the broken one out from the
other side.
As for the reason the short shafts seem to break easier, I think
it's the fact that the longer shafts have enough length to be
able to twist and flex under load, whereas the shorties just
bust.
I dunno about roundabouts, have you been driving over them
instead of around? ;D
#Post#: 102341--------------------------------------------------
Re: Bit of help diagnosing rear axle problem
By: pintofale Date: June 13, 2017, 2:05 pm
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Is the bar/bash idea going to work? Surely there's a diff in the
middle? Also I don't understand why it wouldn't just come out if
it was snapped, seems more like it's jammed in the diff and it's
the diff that's knackered. What do you reckon?
#Post#: 102342--------------------------------------------------
Re: Bit of help diagnosing rear axle problem
By: kev Date: June 13, 2017, 2:16 pm
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Well, thats how I've done it in the past.
You can try and take out the diff first, it'll need taking off
anyroad, - see how you get on. :)
#Post#: 102343--------------------------------------------------
Re: Bit of help diagnosing rear axle problem
By: pintofale Date: June 13, 2017, 3:40 pm
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Ok thanks Kev, I will have another go at getting the shaft out.
Not going to be poking the diff too much as it looks like
replacements are not available. Still a bit mystified as to
what is going on in there but I will find out eventually!
#Post#: 102344--------------------------------------------------
Re: Bit of help diagnosing rear axle problem
By: hippydave Date: June 13, 2017, 4:22 pm
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You cant drop the diff till the half shaft is out. As Kev has
said twat it through from the other side, i have had this happen
to me and couldnt get the shaft out so ran it for a wee while
till the diff exploded because of the bit working loose and
jamming the sun gear and locking up the rear axle :haha:.
#Post#: 102345--------------------------------------------------
Re: Bit of help diagnosing rear axle problem
By: pintofale Date: June 14, 2017, 2:33 am
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I don't think the explosion thing is going to happen, driven in
to work again today with it. I don't understand how I can drive
miles spinning the back wheels but that shaft won't come loose.
Will have another look at the weekend, mebbe it will be a bit
more forthcoming then. I am wondering now if it is just a
simple broken shaft and the jam is at the hub end somehow. This
is the first time I have even tried to take that short halfshaft
out in the 25 years I've owned it!
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