Finally found the sub frames

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Old 26 Jan 2005, 07:55 am   #1 (permalink)
Daniel
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Default Finally found the sub frames

Finally found the vibration isolating sub frames Toyota mentions.
The rear is fairly obvious, the trailing and lateral suspension links
all attach to it.
The front is the welded steel box frame, roughly an "H" shape (plus an
additional cross piece under the steering rack) with the ends of the
"legs" on each side bolted to the body structure through rubber
cushions.
The front attachment points are concealed by the plastic shrouding
which directs air flow beneath the radiator. That's why you see those
large body color welded steel box frame sections on the side of the
engine compartment, they function like a conventional steel "ladder"
frame providing the underside attachment points for the front of the
sub frame which carries the weight of the engine/ transmission, and
that is how the fluid filled engine mounts complement the vibration
damping characteristics of a rubber isolated sub frame.
By the way, one is supposed to be checking the torque of those
attachment bolts for the sub frame as part of periodic maintenance.

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Old 26 Jan 2005, 02:41 pm   #2 (permalink)
Jason James
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Default Re: Finally found the sub frames


"Daniel" <nospampls2002@yahoo.com> wrote in message
news:1106747739.437069.263330@z14g2000cwz.googlegr oups.com...
> Finally found the vibration isolating sub frames Toyota mentions.
> The rear is fairly obvious, the trailing and lateral suspension links
> all attach to it.
> The front is the welded steel box frame, roughly an "H" shape (plus an
> additional cross piece under the steering rack) with the ends of the
> "legs" on each side bolted to the body structure through rubber
> cushions.
> The front attachment points are concealed by the plastic shrouding
> which directs air flow beneath the radiator. That's why you see those
> large body color welded steel box frame sections on the side of the
> engine compartment, they function like a conventional steel "ladder"
> frame providing the underside attachment points for the front of the
> sub frame which carries the weight of the engine/ transmission, and
> that is how the fluid filled engine mounts complement the vibration
> damping characteristics of a rubber isolated sub frame.
> By the way, one is supposed to be checking the torque of those
> attachment bolts for the sub frame as part of periodic maintenance.


Glad you mentioned the torque checks. Every 12months or
20,000ks/12,0000miles is the maximum inspection intervals according to my
manual.

Jason


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Old 26 Jan 2005, 03:11 pm   #3 (permalink)
Art
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Default Re: Finally found the sub frames

What year does the manual say to check the torque of the bolts. Is it the
owners manual or factory manual. I have a 2001 Avalon and don't remember
any mention. My 83 tercel wagon had 6 bolts to check but the lousy dealer
never did it. I did.


"Daniel" <nospampls2002@yahoo.com> wrote in message
news:1106747739.437069.263330@z14g2000cwz.googlegr oups.com...
> Finally found the vibration isolating sub frames Toyota mentions.
> The rear is fairly obvious, the trailing and lateral suspension links
> all attach to it.
> The front is the welded steel box frame, roughly an "H" shape (plus an
> additional cross piece under the steering rack) with the ends of the
> "legs" on each side bolted to the body structure through rubber
> cushions.
> The front attachment points are concealed by the plastic shrouding
> which directs air flow beneath the radiator. That's why you see those
> large body color welded steel box frame sections on the side of the
> engine compartment, they function like a conventional steel "ladder"
> frame providing the underside attachment points for the front of the
> sub frame which carries the weight of the engine/ transmission, and
> that is how the fluid filled engine mounts complement the vibration
> damping characteristics of a rubber isolated sub frame.
> By the way, one is supposed to be checking the torque of those
> attachment bolts for the sub frame as part of periodic maintenance.
>



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