AC Line Pressure Limits

I have a gauge to go with my new form of refrigerant (not
R-12). It shows hi-side pressure can be anywhere from 25-45psi -
which seems like a big range. Not sure how old the compressor/lines
are, as the car (230M) had
engine replaced 20 thousand ago - and not sure compressor/lines was
included. Thanks for insight.

Is the difference that important? Would pushing it to 45 risk a leak?

Tim

abbottim wrote:
> I have a gauge to go with my new form of refrigerant (not
> R-12). It shows hi-side pressure can be anywhere from 25-45psi -
> which seems like a big range.

I think you meant "low-side pressure". Don't put your gauge on the
high-side port. On my '99 model, the low side port is near the
windshield on the passenger side.


> Is the difference that important? Would pushing it to 45 risk a leak?
>

More is not necessarily better in this case. I'd aim for the midpoint
of the range Toyota recommends in the appropriate A/C manual on
camrymanuals.com .

That should be low pressure. If your high ranges from 25-45psi then
you're in trouble ;)
As with anything (such as wheel alignment), keep it in the middle of
the range.

On Jun 23, 6:53 am, abbottim <abbot...m> wrote:
> I have a gauge to go with my new form of refrigerant (not
> R-12). It shows hi-side pressure can be anywhere from 25-45psi -
> which seems like a big range. Not sure how old the compressor/lines
> are, as the car (230M) had
> engine replaced 20 thousand ago - and not sure compressor/lines was
> included. Thanks for insight.
>
> Is the difference that important? Would pushing it to 45 risk a leak?
>
> Tim