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Old 08-06-2005, 20:01   #1 (permalink)
newtovolvo
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740 strut tube disassembly - please help!

I am working on my 740, a sedan, 1990. I have the strut out, the spring
off, and want to get the old strut parts out to put in a new insert.

The so called "nut" on the top of the tube is simply not coming off for me.
I am following the directions on brickboard,com which have been
rather helpful so far. I found the slip joint pliers to not work for me.
I tried the pipe wrench approach and have got no progress. A hammer and a
punch, not able to move it. Used penitrating oil with no success. I don't
have oxy-acetlene, but I have tried a propane torch to heat it up some, and
have not made it work with that either. I looked at the base and do not see
anything that resembles a snap ring to try to get it out from the bottom as
directions on brickboard suggest is possible. The tube appears to be a
press fit in to the casting at the bottom where the caliper, ball joint,
tie rod all attach, can anyone confirm that it is pressed in place?


My remaining concern is to not get so physical with the tube to the point
that it changes shape and becomes not useable. the nut is not exactly in
it's original shape anymore, since the insert came with a new nut, I only
care enough about the old nut to get it off. Don't know why it is called a
nut, it has threads on the outside!

I would be interested in hearing from anyone who has been there and how you
did it.
Thanks so much for any help.

(naturally I expected this to go a little more smoothly than it has and
my primary transportaion is a bit tied up right now.)
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Old 08-06-2005, 22:01   #2 (permalink)
James Sweet
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Posts: n/a
Re: 740 strut tube disassembly - please help!


"newtovolvo" <newtovolvo@nospam.com> wrote in message
news:20050806221915.449$Od@news.newsreader.com...
> I am working on my 740, a sedan, 1990. I have the strut out, the spring
> off, and want to get the old strut parts out to put in a new insert.
>
> The so called "nut" on the top of the tube is simply not coming off for

me.
> I am following the directions on brickboard,com which have been
> rather helpful so far. I found the slip joint pliers to not work for me.
> I tried the pipe wrench approach and have got no progress. A hammer and a
> punch, not able to move it. Used penitrating oil with no success. I don't
> have oxy-acetlene, but I have tried a propane torch to heat it up some,

and
> have not made it work with that either. I looked at the base and do not

see
> anything that resembles a snap ring to try to get it out from the bottom

as
> directions on brickboard suggest is possible. The tube appears to be a
> press fit in to the casting at the bottom where the caliper, ball joint,
> tie rod all attach, can anyone confirm that it is pressed in place?
>
>
> My remaining concern is to not get so physical with the tube to the point
> that it changes shape and becomes not useable. the nut is not exactly in
> it's original shape anymore, since the insert came with a new nut, I only
> care enough about the old nut to get it off. Don't know why it is called a
> nut, it has threads on the outside!
>
> I would be interested in hearing from anyone who has been there and how

you
> did it.
> Thanks so much for any help.
>
> (naturally I expected this to go a little more smoothly than it has and
> my primary transportaion is a bit tied up right now.)



The only way I've ever been able to get these off is with an impact wrench,
that makes quick work of it.


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Old 08-06-2005, 22:01   #3 (permalink)
Randy G.
Guest
 
Posts: n/a
Re: 740 strut tube disassembly - please help!

newtovolvo <newtovolvo@nospam.com> wrote:

>I am working on my 740, a sedan, 1990. I have the strut out, the spring
>off, and want to get the old strut parts out to put in a new insert.
>
>The so called "nut" on the top of the tube is simply not coming off for me.
>I am following the directions on brickboard,com which have been
>rather helpful so far. I found the slip joint pliers to not work for me.
>I tried the pipe wrench approach and have got no progress........[snip]


First, are you using a big vise? One key it to keep the tube
stationary otherwise the effort is just going into moving the tube
about instead of moving the nut.

As I remember, I used a very large pipe wrench, pulling on it while
tightening the vise until the nut gave way.

It could be your efforts have actially compressed the nut enough to
actually make it toghter. If things get desperate, there is always the
Dremel and a cut-off wheel. Cut about 2/3 the way through the nut
(possibly in more than one place) and then use a good, sharp chisel in
the groove to break it off. You could also gring through the top edge,
all around the nut, so that the top of it falls off, then remove the
cartridge and deal with the rest of the nut.

As you stated, since you have replace nuts, destroying the existing
nut seems like the way to go.



__ __
Randy & \ \/ /alerie's
\__/olvos
'90 245 Estate - '93 965 Estate
"Shelby" & "Kate"
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Old 08-07-2005, 00:01   #4 (permalink)
bert@ernies.com
Guest
 
Posts: n/a
Re: 740 strut tube disassembly - please help!

On 07 Aug 2005 02:19:15 GMT, newtovolvo <newtovolvo@nospam.com> wrote:

>
>I am working on my 740, a sedan, 1990. I have the strut out, the spring
>off, and want to get the old strut parts out to put in a new insert.
>
>The so called "nut" on the top of the tube is simply not coming off for me.
>I am following the directions on brickboard,com which have been
>rather helpful so far. I found the slip joint pliers to not work for me.
>I tried the pipe wrench approach and have got no progress. A hammer and a
>punch, not able to move it. Used penitrating oil with no success. I don't
>have oxy-acetlene, but I have tried a propane torch to heat it up some, and
>have not made it work with that either. I looked at the base and do not see
>anything that resembles a snap ring to try to get it out from the bottom as
>directions on brickboard suggest is possible. The tube appears to be a
>press fit in to the casting at the bottom where the caliper, ball joint,
>tie rod all attach, can anyone confirm that it is pressed in place?
>
>
>My remaining concern is to not get so physical with the tube to the point
>that it changes shape and becomes not useable. the nut is not exactly in
>it's original shape anymore, since the insert came with a new nut, I only
>care enough about the old nut to get it off. Don't know why it is called a
>nut, it has threads on the outside!
>
>I would be interested in hearing from anyone who has been there and how you
>did it.
>Thanks so much for any help.
>
>(naturally I expected this to go a little more smoothly than it has and
>my primary transportaion is a bit tied up right now.)


I used a mig welder and welded a large nut, 1" to the top of the gland
nut. Just the heat from welding the nut broke the bead and the nut
came off easily.

On another note, I got a strut insert from Volvo dealer and a gland
nut wasn't included. Anyone know these gland nuts can be found?

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Old 08-07-2005, 09:01   #5 (permalink)
newtovolvo
Guest
 
Posts: n/a
Re: 740 strut tube disassembly - please help!

"Randy G." <frcn@DESPAMMOcncnet.com> wrote in
news:k44bf1h8sh6drru2u5fs238ael2suu3j0k@4ax.com:

> newtovolvo <newtovolvo@nospam.com> wrote:
>
>>I am working on my 740, a sedan, 1990. I have the strut out, the
>>spring off, and want to get the old strut parts out to put in a new
>>insert.
>>
>>The so called "nut" on the top of the tube is simply not coming off
>>for me. I am following the directions on brickboard,com which have
>>been rather helpful so far. I found the slip joint pliers to not work
>>for me. I tried the pipe wrench approach and have got no
>>progress........[snip]

>
> First, are you using a big vise? One key it to keep the tube
> stationary otherwise the effort is just going into moving the tube
> about instead of moving the nut.
>
> As I remember, I used a very large pipe wrench, pulling on it while
> tightening the vise until the nut gave way.
>
> It could be your efforts have actially compressed the nut enough to
> actually make it toghter. If things get desperate, there is always the
> Dremel and a cut-off wheel. Cut about 2/3 the way through the nut
> (possibly in more than one place) and then use a good, sharp chisel in
> the groove to break it off. You could also gring through the top edge,
> all around the nut, so that the top of it falls off, then remove the
> cartridge and deal with the rest of the nut.
>
> As you stated, since you have replace nuts, destroying the existing
> nut seems like the way to go.
>
>
>
> __ __
> Randy & \ \/ /alerie's
> \__/olvos
> '90 245 Estate - '93 965 Estate
> "Shelby" & "Kate"


I have a medium size vise , 4" as I recall. It is burried but I will
unearth it and give it a try. I realized it was difficult for my helper to
hold it steady while I used 2 pipe wrenches. I have an 18" pipe wrench and
a tube I can add for a bit of extra lever arm.

I don't have a high opinion of my skills with a dremel tool, I may get
experienced if it comes to that.

Thank you for your reply!
Open to other suggestions/ideas too
  Reply With Quote
Old 08-07-2005, 09:01   #6 (permalink)
newtovolvo
Guest
 
Posts: n/a
Re: 740 strut tube disassembly - please help!

"James Sweet" <jamessweet@hotmail.com> wrote in
news:KyfJe.7634$sv.3781@trnddc08:

>
> "newtovolvo" <newtovolvo@nospam.com> wrote in message
> news:20050806221915.449$Od@news.newsreader.com...
>> I am working on my 740, a sedan, 1990. I have the strut out, the
>> spring off, and want to get the old strut parts out to put in a new
>> insert.
>>
>> The so called "nut" on the top of the tube is simply not coming off
>> for me.


>>snip


>> The tube appears to be
>> a press fit in to the casting at the bottom where the caliper, ball
>> joint, tie rod all attach, can anyone confirm that it is pressed in
>> place?
>>
>>
>> My remaining concern is to not get so physical with the tube to the
>> point that it changes shape and becomes not useable. the nut is not
>> exactly in it's original shape anymore, since the insert came with a
>> new nut, I only care enough about the old nut to get it off.


>> Don't know why it is called a nut, it has threads on the outside!
>>
>> I would be interested in hearing from anyone who has been there and
>> how you did it.
>> Thanks so much for any help.
>>
>> (naturally I expected this to go a little more smoothly than it has
>> and my primary transportaion is a bit tied up right now.)

>
>
> The only way I've ever been able to get these off is with an impact
> wrench, that makes quick work of it.
>
>


I wonder what the tool that fits on the impact wrench looks like for this
"nut"? The nut is about 2" in diameter, and has 4 small notches at 0,
90,180, & 270 degrees and there is the center pin from the strut sticking
out of the middle of this "nut" about 4". Is your suggestion refering to a
nut the fits this description?

Thank you for your reply also
Open to other suggestions/ideas too
  Reply With Quote
Old 08-07-2005, 09:01   #7 (permalink)
newtovolvo
Guest
 
Posts: n/a
Re: 740 strut tube disassembly - please help!

bert@ernies.com wrote in
news:tv7bf1dp9febkqhtpt0jvrrij303qljvba@4ax.com:

> On 07 Aug 2005 02:19:15 GMT, newtovolvo <newtovolvo@nospam.com> wrote:
>
>>
>>I am working on my 740, a sedan, 1990. I have the strut out, the
>>spring off, and want to get the old strut parts out to put in a new
>>insert.
>>
>>The so called "nut" on the top of the tube is simply not coming off
>>for me. I am following the directions on brickboard,com which have
>>been rather helpful so far. I found the slip joint pliers to not work
>>for me. I tried the pipe wrench approach and have got no progress. A
>>hammer and a punch, not able to move it. Used penitrating oil with no
>>success. I don't have oxy-acetlene, but I have tried a propane torch
>>to heat it up some, and have not made it work with that either. I
>>looked at the base and do not see anything that resembles a snap ring
>>to try to get it out from the bottom as directions on brickboard
>>suggest is possible. The tube appears to be a press fit in to the
>>casting at the bottom where the caliper, ball joint, tie rod all
>>attach, can anyone confirm that it is pressed in place?
>>
>>
>>My remaining concern is to not get so physical with the tube to the
>>point that it changes shape and becomes not useable. the nut is not
>>exactly in it's original shape anymore, since the insert came with a
>>new nut, I only care enough about the old nut to get it off. Don't
>>know why it is called a nut, it has threads on the outside!
>>
>>I would be interested in hearing from anyone who has been there and
>>how you did it.
>>Thanks so much for any help.
>>
>>(naturally I expected this to go a little more smoothly than it has
>>and my primary transportaion is a bit tied up right now.)

>
> I used a mig welder and welded a large nut, 1" to the top of the gland
> nut. Just the heat from welding the nut broke the bead and the nut
> came off easily.
>
> On another note, I got a strut insert from Volvo dealer and a gland
> nut wasn't included. Anyone know these gland nuts can be found?
>


You are the second person who has told of the vast benifits of having and
using a welder to solve this problem!
I do like your idea of a large conventional nut welded to the existing
"nut". I could cut down the length the center rod of the strut to make it
possible for a deep impact socket to grab the added nut and use an electric
impact that I have to take this odd congomeration of nuts off.

Regarding the need for a replacement nut, I would sure try the dealer and
make sure you speak to the most expierenced parts person you can, Maybe
call more than one dealer. I would expect that they can order them, sure
hope so. I purchased inserts made by sachs. They are from germany and
included the nut. They muct know by the time you get the old nut off you
will not want to, or not be able to put it back on.

Thank you for your reply as well!
Open to other suggestions/ideas too
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Old 08-07-2005, 09:01   #8 (permalink)
Randy G.
Guest
 
Posts: n/a
Re: 740 strut tube disassembly - please help!

newtovolvo <newtovolvo@nospam.com> wrote:

>I have a medium size vise , 4" as I recall. It is burried but I will
>unearth it and give it a try. I realized it was difficult for my helper to
>hold it steady while I used 2 pipe wrenches. I have an 18" pipe wrench and
>a tube I can add for a bit of extra lever arm.
>
>I don't have a high opinion of my skills with a dremel tool, I may get
>experienced if it comes to that.
>
>Thank you for your reply!
>Open to other suggestions/ideas too
>


My cousin use to own a Honda car repair shop. The Hondas had sealed
struts that were one piece- that is, the strut tube WAS the shock, and
when it needed replacement you had to buy an entire strut. Koni (and
others, I suppose) came up with a replacement cartridge like you are
installing, but to use it you had to remove the guts of the old strut.
Becasue the internals were under spring tension, the way they did it
was to position a garbage can under a bench grinder. The mechanic
would aim the strut towards the can while grinding the end of the
strut off (where your nut is). Eventually enough of the strut end was
removed that WHAM, the end of the strut popped off and all the guts
(spring, valves, oil) would be expelled with great force into the
trash can. It was exciting to watch.


__ __
Randy & \ \/ /alerie's
\__/olvos
'90 245 Estate - '93 965 Estate
"Shelby" & "Kate"
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Old 08-07-2005, 10:01   #9 (permalink)
newtovolvo
Guest
 
Posts: n/a
Re: 740 strut tube disassembly - please help!

"Randy G." <frcn@DESPAMMOcncnet.com> wrote in
news:rcacf1d3slmontmp3m7alkie0iumsvdbhg@4ax.com:

> newtovolvo <newtovolvo@nospam.com> wrote:
>
>>I have a medium size vise , 4" as I recall. It is burried but I will
>>unearth it and give it a try. I realized it was difficult for my
>>helper to hold it steady while I used 2 pipe wrenches. I have an 18"
>>pipe wrench and a tube I can add for a bit of extra lever arm.
>>
>>I don't have a high opinion of my skills with a dremel tool, I may get
>>experienced if it comes to that.
>>
>>Thank you for your reply!
>>Open to other suggestions/ideas too
>>

>
> My cousin use to own a Honda car repair shop. The Hondas had sealed
> struts that were one piece- that is, the strut tube WAS the shock, and
> when it needed replacement you had to buy an entire strut. Koni (and
> others, I suppose) came up with a replacement cartridge like you are
> installing, but to use it you had to remove the guts of the old strut.
> Becasue the internals were under spring tension, the way they did it
> was to position a garbage can under a bench grinder. The mechanic
> would aim the strut towards the can while grinding the end of the
> strut off (where your nut is). Eventually enough of the strut end was
> removed that WHAM, the end of the strut popped off and all the guts
> (spring, valves, oil) would be expelled with great force into the
> trash can. It was exciting to watch.
>
>
> __ __
> Randy & \ \/ /alerie's
> \__/olvos
> '90 245 Estate - '93 965 Estate
> "Shelby" & "Kate"
>


Funny you bring this up, The first strut I am working on has no pressure
left, much oil has been forced out, some on my brake caliper and flexible
lines - which I will do what I can to clean up.

I am wondering about the other side which has not leaked. Did Volvo in the
old days put an insert in the strut tube or did they simply build the
parts right in the tube as you point out that honda did? I ask as I am
wondering the best way to handle the strut that is pressureized as it will
be next?

I would think from a manufacturing and repair point of view the insert
would be simpler, but may cost a bit more in the begining.

thanks again
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Old 08-07-2005, 10:01   #10 (permalink)
Randy G.
Guest
 
Posts: n/a
Re: 740 strut tube disassembly - please help!

newtovolvo <newtovolvo@nospam.com> wrote:

>
>I wonder what the tool that fits on the impact wrench looks like for this
>"nut"? The nut is about 2" in diameter, and has 4 small notches at 0,
>90,180, & 270 degrees and there is the center pin from the strut sticking
>out of the middle of this "nut" about 4". Is your suggestion refering to a
>nut the fits this description?
>

There's always the "Moron's Impact Wrench." Lock the tube in the vise.
Attach a large vice grip to the nut. Hit Vice Grip with large deadblow
hammer. For holding the tube in a vice- wrap it tightly with a towel,
and tighten slowly until it is held enough to not turn. You may even
be able to place the tube so that some stornr protrudence on the tube
locks it on the bench to keep it from turning, and use an assistant
with a strap wrench to further hold it from spinning in the vice... Or
take it to a suspension shop and pay them to remove the nuts....


__ __
Randy & \ \/ /alerie's
\__/olvos
'90 245 Estate - '93 965 Estate
"Shelby" & "Kate"
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