Great question! Yes, there is something you can do.
You can petition the court that issued the judgement (I cannot tell what court this is, but speaking in general) for a payment plan monitored by the court. It is a very common request, and is usually granted.
Technically, it is a petition or motion to amend a judgement. It can be done at any time.
Most courts have a local form for exactly this request. If this is a CA case, you can find the forms at the California Judicial Council Web Site under Forms: Civil Forms: Judgement.
Or check your court's web site under forms. It is a very common request, there should be a form. If there is no form for your court, you can make the request in letter form, take it to the court clerks office and request that it be filed in person. The court clerk will give you instructions from there.
You can also go to the law library and ask the librarian for help with the request. They are familiar with it.
Most courts also have a pro bono / small claims court advisor's office that will answer these questions for free at the courthouse (even if it is not a small claims case).
Now that you know you have that option, I recommend this:
1) notify the judgement holder that you can not pay as it is now, and that you intend to petition the court for a payment plan. Give them the option to agree to it before a court petition. Get any payment play you agree to in writing.
If they refuse, then petition the court for a payment plan.
Most of the time, those requests are not opposed if the creditor knows you cannot pay in full, and/or the judge is inclined to grant the request if reasonable to promote the satisfaction of judgements.
If this is CA, and his drivers license is suspended, he can apply for a restricted license to allow driving to work. Check the DMV web site under Forms: Accidents for the restricted license application.
Questions? Let me know.
-Attorney Christopher Dort
(I assumed you were in CA)