Depends on what is wrong with it. You did not say.
It all depends on what is wrong with it.
If it's still under warranty I would send it back to Crosman or at least contact customer service at Crosman. WWW.Crosman.com
See the link below.
You did not state what was wrong with the R34. Can not help you fix something if you don't say what is wrong with it. If it's still under warranty I suggest that you contact Crosman: CUSTOMER SERVICE: (see the link below)
Most likely "No," but here is the parts drawing for the pistol (see the link below) Crosman offers a service to locate repair shops that fix older Crosman air guns see the link below
Crosman offers a service to locate repair shops that fix Crosman airguns that are out of warranty (antiques) See the link below. For the parts manual see the link #2 below
Crosman still services this pistol it is best to contact them and tell them what you need, their address is: Crosman Corporation7629 Routes 5 & 20East Bloomfield, NY 144431-800-7AIRGUN (724-7486)
I hate to answer a question with a question but, can you be more specific?
Take it to an authorized repair center.
These guns were notorious leakers. Today Crosman owns the Hahn 45 model air pistol. Crosman offers a free service to locate shops that repair o0lder Crosman models including the hahn 45. See the link below It's also known as the Crosman model 36 frontier.
It's hard to help you, considering you did not say what is wrong with your airgun. So here is what I suggest. Crosman offers a service to locate shops that repair older Cromann products. See the link below.
Find a qualified air gun gun smith.