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Old 12-23-2006, 09:05 PM   #1 (permalink)
hizark21@yahoo.com
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Fork clutch spring keeps coming off....??

I replaced the clutch in my 1997 4runner 4 cylinder engine. The problem
is that the fork clutch spring (spring that attaches to the throw out
bearing) keeps coming off. The clip is a U-shaped wire clip. This
spring seems secure, but when install the transmission it comes off at
the slightest touch. I noticed in the Chilton's manual that there is
another flat spring that they show. This really annoying I have had to
remove the transmission twice because of this issue. I can't believe
the auto industry has not come up with a better way. I am almost
tempted to install some small bolts.

 
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Old 12-23-2006, 10:08 PM   #2 (permalink)
Ray O
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Re: Fork clutch spring keeps coming off....??


<hizark21@yahoo.com> wrote in message
news:1166929552.163933.9490@48g2000cwx.googlegroups.com...[color=blue]
>I replaced the clutch in my 1997 4runner 4 cylinder engine. The problem
> is that the fork clutch spring (spring that attaches to the throw out
> bearing) keeps coming off. The clip is a U-shaped wire clip. This
> spring seems secure, but when install the transmission it comes off at
> the slightest touch. I noticed in the Chilton's manual that there is
> another flat spring that they show. This really annoying I have had to
> remove the transmission twice because of this issue. I can't believe
> the auto industry has not come up with a better way. I am almost
> tempted to install some small bolts.
>[/color]

I have never heard of the problem you are describing, so I suspect that the
auto industry has already come up with a better way ;-)

Perhaps you can post a link to a picture of the linkage in question or a
better description of what is happening. Does the clip come completely off
of the throwout bearing or does it disconnect from one or both of the fork
tips and hang there? Is there a long wire spring inside the fork that hooks
to the ends of the U-clip to hold the U-clip in place?

IIRC, you are supposed to install the throwout bearing to the fork and then
place them together in the bell housing. If you actuator cylinder is off
the housing, you should be able to move the fork "handle" fore and aft to
see if the springs and clips stay in place before you re-install the
transmission.
--

Ray O
(correct punctuation to reply)


 
Old 12-23-2006, 11:20 PM   #3 (permalink)
hizark21@yahoo.com
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Re: Fork clutch spring keeps coming off....??


Ray O wrote:[color=blue]
> <hizark21@yahoo.com> wrote in message
> news:1166929552.163933.9490@48g2000cwx.googlegroups.com...[color=green]
> >I replaced the clutch in my 1997 4runner 4 cylinder engine. The problem
> > is that the fork clutch spring (spring that attaches to the throw out
> > bearing) keeps coming off. The clip is a U-shaped wire clip. This
> > spring seems secure, but when install the transmission it comes off at
> > the slightest touch. I noticed in the Chilton's manual that there is
> > another flat spring that they show. This really annoying I have had to
> > remove the transmission twice because of this issue. I can't believe
> > the auto industry has not come up with a better way. I am almost
> > tempted to install some small bolts.
> >[/color]
>
> I have never heard of the problem you are describing, so I suspect that the
> auto industry has already come up with a better way ;-)[/color]

The clip comes off the tips of the fork. Yes there is a long spring,
but is used to attach the fork to the pivot bolt. The spring does not
connect to the U-clip. The spring stays on fore and aft, but it seems
to keep coming loose for some reason.
[color=blue]
> Perhaps you can post a link to a picture of the linkage in question or a
> better description of what is happening. Does the clip come completely off
> of the throwout bearing or does it disconnect from one or both of the fork
> tips and hang there? Is there a long wire spring inside the fork that hooks
> to the ends of the U-clip to hold the U-clip in place?
>
> IIRC, you are supposed to install the throwout bearing to the fork and then
> place them together in the bell housing. If you actuator cylinder is off
> the housing, you should be able to move the fork "handle" fore and aft to
> see if the springs and clips stay in place before you re-install the
> transmission.
> --
>
> Ray O
> (correct punctuation to reply)[/color]

 
Old 12-24-2006, 12:36 AM   #4 (permalink)
Ray O
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Re: Fork clutch spring keeps coming off....??


<hizark21@yahoo.com> wrote in message
news:1166937627.794682.205710@42g2000cwt.googlegroups.com...[color=blue]
>
> Ray O wrote:[color=green]
>> <hizark21@yahoo.com> wrote in message
>> news:1166929552.163933.9490@48g2000cwx.googlegroups.com...[color=darkred]
>> >I replaced the clutch in my 1997 4runner 4 cylinder engine. The problem
>> > is that the fork clutch spring (spring that attaches to the throw out
>> > bearing) keeps coming off. The clip is a U-shaped wire clip. This
>> > spring seems secure, but when install the transmission it comes off at
>> > the slightest touch. I noticed in the Chilton's manual that there is
>> > another flat spring that they show. This really annoying I have had to
>> > remove the transmission twice because of this issue. I can't believe
>> > the auto industry has not come up with a better way. I am almost
>> > tempted to install some small bolts.
>> >[/color]
>>
>> I have never heard of the problem you are describing, so I suspect that
>> the
>> auto industry has already come up with a better way ;-)[/color]
>
> The clip comes off the tips of the fork. Yes there is a long spring,
> but is used to attach the fork to the pivot bolt. The spring does not
> connect to the U-clip. The spring stays on fore and aft, but it seems
> to keep coming loose for some reason.
>[color=green]
>> Perhaps you can post a link to a picture of the linkage in question or a
>> better description of what is happening. Does the clip come completely
>> off
>> of the throwout bearing or does it disconnect from one or both of the
>> fork
>> tips and hang there? Is there a long wire spring inside the fork that
>> hooks
>> to the ends of the U-clip to hold the U-clip in place?
>>
>> IIRC, you are supposed to install the throwout bearing to the fork and
>> then
>> place them together in the bell housing. If you actuator cylinder is off
>> the housing, you should be able to move the fork "handle" fore and aft to
>> see if the springs and clips stay in place before you re-install the
>> transmission.
>> --
>>
>> Ray O
>> (correct punctuation to reply)[/color]
>[/color]

Apply grease to the tips of the fork where it contacts the throwout bearing,
at the pivot point, and where the push rod contacts the "handle" of the
fork.

It would be helpful to know when the ends of the clip actually pop off so
that the cause might be more obvious. I don't know if it is possible to
install the fork backwards, but the hollow side of the fork should be facing
away from the clutch and towards the transmission body. That way, the force
of the movement of the fork when the clutch is disengaged should tend to
seat the ends of the spring clip more firmly on the tips of the fork. When
the clutch is engaged, the movement of the throwout bearing should tend to
push the U-body of the clip more firmly against the tips of the fork.

Assuming that the fork is not installed backwards and the ends of the spring
clip are properly attached to the ends of the fork, I'm out of ideas without
actually seeing the setup.
--

Ray O
(correct punctuation to reply)


 
Old 12-24-2006, 02:30 AM   #5 (permalink)
hizark21@yahoo.com
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Re: Fork clutch spring keeps coming off....??

Yes the hollow side is facing the transmission. I also applied grease
as you described.

If I could locate the flat U-spring as opposed to the wire U-Spring
this would probably solve the problem.

Ray O wrote:[color=blue]
> <hizark21@yahoo.com> wrote in message
> news:1166937627.794682.205710@42g2000cwt.googlegroups.com...[color=green]
> >
> > Ray O wrote:[color=darkred]
> >> <hizark21@yahoo.com> wrote in message
> >> news:1166929552.163933.9490@48g2000cwx.googlegroups.com...
> >> >I replaced the clutch in my 1997 4runner 4 cylinder engine. The problem
> >> > is that the fork clutch spring (spring that attaches to the throw out
> >> > bearing) keeps coming off. The clip is a U-shaped wire clip. This
> >> > spring seems secure, but when install the transmission it comes off at
> >> > the slightest touch. I noticed in the Chilton's manual that there is
> >> > another flat spring that they show. This really annoying I have had to
> >> > remove the transmission twice because of this issue. I can't believe
> >> > the auto industry has not come up with a better way. I am almost
> >> > tempted to install some small bolts.
> >> >
> >>
> >> I have never heard of the problem you are describing, so I suspect that
> >> the
> >> auto industry has already come up with a better way ;-)[/color]
> >
> > The clip comes off the tips of the fork. Yes there is a long spring,
> > but is used to attach the fork to the pivot bolt. The spring does not
> > connect to the U-clip. The spring stays on fore and aft, but it seems
> > to keep coming loose for some reason.
> >[color=darkred]
> >> Perhaps you can post a link to a picture of the linkage in question or a
> >> better description of what is happening. Does the clip come completely
> >> off
> >> of the throwout bearing or does it disconnect from one or both of the
> >> fork
> >> tips and hang there? Is there a long wire spring inside the fork that
> >> hooks
> >> to the ends of the U-clip to hold the U-clip in place?
> >>
> >> IIRC, you are supposed to install the throwout bearing to the fork and
> >> then
> >> place them together in the bell housing. If you actuator cylinder is off
> >> the housing, you should be able to move the fork "handle" fore and aft to
> >> see if the springs and clips stay in place before you re-install the
> >> transmission.
> >> --
> >>
> >> Ray O
> >> (correct punctuation to reply)[/color]
> >[/color]
>
> Apply grease to the tips of the fork where it contacts the throwout bearing,
> at the pivot point, and where the push rod contacts the "handle" of the
> fork.
>
> It would be helpful to know when the ends of the clip actually pop off so
> that the cause might be more obvious. I don't know if it is possible to
> install the fork backwards, but the hollow side of the fork should be facing
> away from the clutch and towards the transmission body. That way, the force
> of the movement of the fork when the clutch is disengaged should tend to
> seat the ends of the spring clip more firmly on the tips of the fork. When
> the clutch is engaged, the movement of the throwout bearing should tend to
> push the U-body of the clip more firmly against the tips of the fork.
>
> Assuming that the fork is not installed backwards and the ends of the spring
> clip are properly attached to the ends of the fork, I'm out of ideas without
> actually seeing the setup.
> --
>
> Ray O
> (correct punctuation to reply)[/color]

 
Old 12-24-2006, 11:06 AM   #6 (permalink)
Ray O
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Re: Fork clutch spring keeps coming off....??


<hizark21@yahoo.com> wrote in message
news:1166949020.167936.228420@h40g2000cwb.googlegroups.com...[color=blue]
> Yes the hollow side is facing the transmission. I also applied grease
> as you described.
>
> If I could locate the flat U-spring as opposed to the wire U-Spring
> this would probably solve the problem.
>[/color]
By any chance, did you replace the throwout bearing? If so, does the U-clip
fit differently around the replacement bearing than from the original
bearing? I'm wondering if a replacement bearing needs a different kind of
clip.

Ray O
(correct punctuation to reply)


 
Old 12-24-2006, 05:19 PM   #7 (permalink)
mrcheerful .
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View mrcheerful                                                                          .'s Photo Gallery
Re: Fork clutch spring keeps coming off....??


<hizark21@yahoo.com> wrote in message
news:1166929552.163933.9490@48g2000cwx.googlegroups.com...[color=blue]
>I replaced the clutch in my 1997 4runner 4 cylinder engine. The problem
> is that the fork clutch spring (spring that attaches to the throw out
> bearing) keeps coming off. The clip is a U-shaped wire clip. This
> spring seems secure, but when install the transmission it comes off at
> the slightest touch. I noticed in the Chilton's manual that there is
> another flat spring that they show. This really annoying I have had to
> remove the transmission twice because of this issue. I can't believe
> the auto industry has not come up with a better way. I am almost
> tempted to install some small bolts.
>[/color]

temporarily tie the fork to its pivot with small cable ties, they can stay
there, once the tranny is installed the fork will not come off the pivot in
any case.


 
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