Drew Callahan Drew Callahan · January 1, 2026
Air Brake System Maintenance for THOR PALAZZO I was three days into a late-October run through the Colorado Rockies, climbing toward Vail in a steady drizzle, when my foot brake started feeling mushy. Not catastrophic—just soft, like I was pushing through cotton instead of steel. I pulled over at a rest area, killed the engine, … Read more
Drew Callahan · January 1, 2026
Slide-Out Hydraulic Service for FOREST RIVER BERKSHIRE Walk into any RV dealer service bay and ask about a sluggish Berkshire slide-out, and you’ll hear one story. Post the same problem in an online forum and you’ll hear another — usually the opposite. One camp says “top off your fluid and bleed the air,” the other … Read more
Drew Callahan · January 1, 2026
Diesel Engine Oil Service for THOR PALAZZO The Thor Palazzo diesel pusher sits at an awkward middle ground — it’s heavy enough to demand real diesel maintenance discipline, but just small enough that owners sometimes treat it like a gassed-up Class C and skip intervals or grab whatever 15W-40 is on sale at the truck … Read more
Drew Callahan · December 31, 2025
Cooling System Service for THOR PALAZZO I’ve got the radiator cap off and I’m staring down into the PALAZZO’s cooling passages, and what I see tells me everything about why full-timers blow engines on these rigs. The coolant in there is the color of weak tea—not the bright red or orange it should be—and when … Read more
Drew Callahan · December 31, 2025
Air Brake System Maintenance for WINNEBAGO FORZA It started as a soft hissing sound from under the engine bay—the kind of noise you almost miss if you’re not standing in the right spot. Turned out the air dryer cartridge on my buddy’s Forza had saturated completely, and moisture was backing up into the supply lines … Read more
Drew Callahan · December 30, 2025
Diesel Engine Oil Service for WINNEBAGO FORZA Most Winnebago Forza owners assume that dropping a Cummins or CAT diesel under the hood means they can coast on maintenance—that the name plate alone buys them time. That’s backwards, and it’s expensive. The Forza sits at a price point where the builder cuts corners on what matters … Read more
Drew Callahan · December 30, 2025
Air Brake System Maintenance for HOLIDAY RAMBLER NAVIGATOR I’ve got a specific bay in my shop setup where I handle air brake work — it’s the one with the compressed air line routed overhead and the socket tray bolted to the wall at arm’s reach. That bay exists because air brake systems on the Holiday … Read more
Drew Callahan · December 29, 2025
Air Brake System Maintenance for ENTEGRA CORNERSTONE Skip air brake maintenance on an Entegra Cornerstone and you’ll eventually face either an expensive mobile technician visit or a roadside emergency where your stopping power simply isn’t there when you need it most. That’s not hyperbole — on a 40,000-pound coach, compromised air brakes aren’t just inconvenient, … Read more
Drew Callahan · December 29, 2025
Diesel Engine Oil Service for HOLIDAY RAMBLER NAVIGATOR I can pull the dipstick out of a Holiday Rambler Navigator’s engine right now and show you exactly what skipped oil service looks like—a thick, tar-black paste coating the stick, metal particles visible to the naked eye, and a smell that tells you the oil broke down … Read more
Drew Callahan · December 29, 2025
Slide-Out Hydraulic Service for HOLIDAY RAMBLER NAVIGATOR “Drew, my Navigator’s slide is moving like molasses, and I’m pretty sure I’m losing fluid somewhere underneath. How bad is this going to be?” That message came through last month from a full-timer I’d met at a rally, and it’s the exact question I’ve fielded dozens of times … Read more
