It seems that you always need a tool you do not have, but for many fiberglass camping trailers, this list should cover most common tasks you are likely to tackle while on the road and not become overly burdensome.
The tools, their sizes, and the supplies that you need are often specific to your rig, especially if you are trying to minimize what you carry. Therefore, you should choose supplies and tools based on the specifics of your vehicles. Customize your toolbox by going over your rig from top to bottom, examining everything you might need to work on, and choose the right sized tools and the supplies you need. For example, this list assumes you are not using a generator
and if you are, the tools and supplies needed for it’s upkeep should be added to this list. This list is for making repairs on the road and does not include safety items (fire extinguisher, eye protection) or suggested daily use items such as a surge suppressor and water pressure regulator but you should still use them when appropriate of course.
Tier-One includes priority tools and supplies that you should not leave home without. You should know how to safely use them, or have someone available who does.
Proper tools to change tires
(wheels). Check beforehand (Note Scamp
needs deep socket to remove spare but regular socket is OK for mounting wheels to hubs)
Air compressor and tire pressure gauge
Multi-meter or 12 VDC and 120 VAC testers.
Spare wire (10 and 14 g), crimp connectors, wire nuts
Bulbs (tug and trailer, inside and outside).
Wire cutter / crimp / strip tool
Water heater drain plug socket
Water Hose washers
Assorted sizes of Hose Clamps
Adjustable wrenches, channel lock pliers, crescent wrench, needle nose and vice grip pliers (sized to the gear on your rig).
Small hack saw
Phillips and flat screwdrivers, also torx if needed.
Duct tape and or Gorilla tape
Spare rivets and rivet gun
Emery cloth and small wire brush
3M 4200 Marine caulk
Any specialty tools or attachments required for your particular rig.
Owner’s manuals with parts lists.
Tier-Two includes tool you might be able to get by without, but they come in handy or are required less frequently. Tier-Two tools are recommended when full timing or boodocking when ready access to stores or repair facilities is not expected. Some of these items are so lightweight that there really is no reason not to carry them.
Spare bearing and seal set with cotter pins. Bearing pre-packed with grease and sealed in baggie
Tire plug repair kit
Metric and SAE Socket Set with extensions
Hammer with claw or Axe–hammer and small crowbar
Electric screwdriver / drill and bits
Grease gun if you have “bearing buddies”
Can of WD-40
Chain quick links and shackles
Assorted bolts, screws, etc.
Sections of replacement hose
TFE paste and Thread Seal Tape
Soldering iron with solder
Small bubble level
RV antifreeze if you might unexpectedly experience sub-freezing temps
As always.. this is IMHO and YMMV.