I think it depends on the campaign type - you can't really convert to StratOps level of repairs where you're tracking each individual part but it should be easy enough to use the abstracted warchest point system used by the Chaos Campaign for replacements/repairs.
And honestly, if your players don't want to abstract out repairs, they probably won't want to abstract out combat to the AS level either. I mean, I'm sure there might be a few players that are more into AccountantTech over BattleTech and want the repair details but not the battle details, but I'm guessing they're a small minority.