[s-cars] A/C recharge

[J R]

My 93 URS4 needs an A/C recharge.  Does anyone have a procedure for doing
this?  Can I do it myself?  I've read emails to this list and posts to
forums where people say no because it doesn't have a low side charge port.
I've read other emails on this list and other posts where somehow people did
it anyway.  I pride myself in not having had to take my car to the
stealership since I bought it.  I've done all of the work myself.  Is there
any way to recharge/re-oil the A/C on a URS4 yourself?

Thanks,

JR