we have a trail boss 330( not sure of the yr) at work. The chain was loose and me and a coworker were tightening it via the way shown on YouTube. My coworker was holding the front brakes (the rear brakes haven’t worked as long as I’ve worked here) to keep it from rolling and putting slack in the chain. Well all the sudden the front brakes went out. There’s no tension/pressure when you pull the front brake lever, and not there’s fluid leaking out around the rear caliper. I have to fix this before my boss comes back from vacation. If I fix the leak at the rear, refill brake fluid, and bleed brakes, will the front brakes start working again?