Find mechanical specifications for Jayco trailers and recreational vehicles within the owner's manuals of each piece of equipment. These manuals come with the product, or download a manual from the Jayco website. Manuals contain information on electrical fuses, towing capacities, propane heating systems and tire pressure.
For example, the owner's manual for a 2016 Jay Feather towable trailer includes calculations for propane usage for different appliances in the camper. A water heater averages 8,800 British thermal units per hour, which comes out to 9,200 kilojoules per hour. A range/oven combination may consume up to 7,100 British thermal units, or 7,490 kilojoules, of energy per hour.
The manual lists the approximate electrical load of several appliances and light bulbs for the towable trailers. For example, the shower light uses 1.4 amps of power, while the furnace runs on 12 amps. The leveling system requires 95 amps to run, and the water pump needs 7 amps. The 12-volt fuse panel shows exactly what size fuse goes into which panel. Most fuses for these trailers need a 15-amp fuse, with one larger one for 20 amps.
Wheel lug nut diagrams within the manual show the torque specifications needed to tighten the lug nuts properly. On wheels with four lug nuts, the acceptable torque range goes from 50 to 75 foot-pounds. On wheels with six lug nuts, the torque should go from 90 to 120 foot-pounds.