If there was nothing else to use and I could it to the shop by doing it I would definitely utilize what was on hand. I have a hydraulic hammer mounted on a Cat 325 that blew a hose one time, i had the fittings and the hose on hand to build a new one. When the call came in on the radio I instructed the operator to take it off, all he need was and 18 mm wrench to loosen 8 bolts, while I crimped up the new one. He did as told and I did my end but could not find the right oring for the job, so I grabbed a d ring with the right od/id in case the old one was bad. Sure enough my operator had lost it. The hammer ran for 2 days with the d ring in it. Not the best practice but a good test if you ask me.