I do all/most of my own maintenance and service on my 5th wheeler. While working on the rig at home I try perform these functions out my on-board toolbox, if I’m short something it will probably get added. I’m one of those guys that never met a tool I didn’t like, so my shop is well stocked. So I carry what I think I’d need on the road for most things.
1. Multi bit screw driver with a wide assortment of special bits
2. Basic dedicated screwdrivers, square drive, Phillips, straight, etc.
3. Most of a Lowes pliers set, left a few things behind
4. 6, 8 & 10 in. adjustable wrenches
5. 8” vise grip pliers
6. Both 3/8” SAE and metric socket sets, my rig needs both
7. Both 3/8” SAE and metric combination wrenches
8. A combination set of ¼” SAE and metric sockets
9. Medium ball pin hammer
10. Wire strippers and crimpers
11. Allen head wrench sets
12. Tape measure
13. PEX hose cutter and crimper for steel PEX bands
14. Caulk gun
15. Grease guns, small and standard
16. 14” pry bar, use to do the last inch of lift when changing tires, makes life easy (never had a flat)
17. Digital multimeter
18. Infrared thermometer
19. Digital tire gauge and an analog tire gauge
20. Torque wrenches, I check my wheel lugs every morning along with tire pressures
21. Four-way tire tool
22. Long ½” breaker bar with another 30” pipe cheater
23. 12 ton jack
24. Cordless drill with charger & matching work light
25. Odd assortment of items used to change a wheel bearing
26. Utility knife & razor scraper
27. LED flashlight in toolbox
28. Split ring pliers, inside & outside
29. I use a CO2 system to inflate tires instead of a compressor, I frequently do not have 110v power for a larger compressor
30. Air blow gun and a extension blow gun (up to 22”) Tire inflator
31. Medium ball pin hammer
32. Hand held Propane detector
33. Hacksaw & spare blades
34. Small wood saw
35. And what ever I can’t recall
As for supplies and parts:
1. Full set of fuses
2. Spare bulbs
3. Electrical, duct, teflon tape
4. Zip ties
5. 12 ga. wire
6. Crimp ends for wires, custom selected for wires on-board
7. Spare length of 12Ga. Wire
8. Cable ties
9. Spare wheel bearings, seals, etc.
10. Bearing grease
11. Grease for wet bolts
12. Propane pipe joint compound (the yellow stuff)
13. Disposable gloves
14. Rags
15. Silicone spray
16. WD40 (this is not a lube)
17. Spare PEX fittings and PEX clamps & short length(s) of PEX pipe
18. Assortment of screws
19. Roof repair materials
20. Caulk
21. Superglue
22. Butyl tape
23. C-clips for compartment door latches
24. Dicor self leveling sealant
25. Washers for water hose , spare wire mesh filter for the city water connection
26. Manuals for everything I’ve found manuals for
27. Hand cleaner
28. Roll of paper towels
29. All other things I can’t think of sitting here
I carry this stuff in four places, a regular plastic toolbox for the most used things, another box for the cordless stuff, another plastic box for rarely used tools and a large plastic tub for the spare parts. Small parts live in an assortment of plastic part boxes from Home Depot. I have avoided buying those assortment kits of parts. I select only the sizes and types that are actually used in my rig and in quantities that might be needed. With exception of wheel bearings and jacks I’ve used most of the stuff at some point or another.