I'd suggest a LM Crunch as your back-up MT - that way you have locking pliers and a second set of pliers for a bolt & nut.Also a headlamp as a back-up light (you will want to have both hands free to work on stuff, for sure).Won't the heavy equipment supplier/owner have their own mechanics and dedicated tools ?
Not to discourage you, if you're expected to fix the machines yourself, will the outfit you work for provide tools and training? A pair of pliers, while handy, is fairly limited. Maybe a toolkit that includes a few dedicated wrenches in the sizes you will need, plus sockets, ratcheting bit driver, chanellocks, vice grips, and maybe a few other odds and ends will serve you better. It's fun to think your multitool will fix everything and you'll be the hero of the day, but it really is poor substitute for a dedicated tool kit. Definitely not discounting it, and it's worth having around in an emergency, but not as a primary tool. Sent from my SCH-I545 using Tapatalk
I would fully expect an operator to carry out all minor work himself, and be able to do daily checks properly. All the operators I've worked with outside of urban environments have done this. You don't want to be getting a mechanic out into potentially the middle of nowhere.Is it a logging operation you're going to work on? Or a road crew of some sort?