A series of hoses installed in the engine and transmission move lubricants and coolants through key operating components to keep the systems from freezing, overheating, cracking or corroding.  Some systems these hoses help to protect include the radiator, water pump, brakes and power steering.  Belts and pulleys are installed on engine operating components to drive fans and maintain movement of the alternator.

Heat, vibration and exposure to road chemicals can cause belts and hoses to weaken over time.  Belts and hoses can also harden and split due to age.  Exposure to high heat may cause belts and hoses to wear more quickly than average use in moderate temperatures.

Perform a visual inspection of belts and hoses for wear after each oil change.  Prior to inspecting the belts and hoses, turn off the ignition and wait for the engine to cool.  Regularly wash the engine compartment to remove dirt and debris that can camouflage worn belts and hoses.

A thorough inspection of belts should be performed every six months.  If a belt is cracked or split it must be replaced.  Also inspect belts for proper alignment and tension.

Worn belts may squeal or produce a thumping noise.  Detecting these sounds can be difficult when the engine is located at the rear of the motor home.  Occasionally leave the engine idling, set the park brake and walk back to the engine compartment to listen for unusual sounds.

Hoses that appear cracked or split, or hoses that feel excessively brittle or soft should be immediately replaced.  Hoses can also deteriorate on the inside.  Replace hoses on an as needed basis.

Remember to include generator belts and hoses in your regular inspections.

Fluid on the ground may not necessarily indicate a leak in the transmission, but could indicate a problem with the hydraulic leveler hoses.

A hose clamp is an adjustable metal band installed to keep a hose in place.  Use clamps designed without teeth punched through to prevent the band from rubbing against the hose.  Hose clamp pliers are available to use when accessing hard to reach clamps and come with a locking mechanism that frees both hands.

Numerous types of clamps may be installed on the motor home.  Use caution to avoid over tightening a clamp.  A ¼ inch t-bolt clamp requires 120-inch lbs.  Constant torque clamps used on most water or coolant hoses are torqued at 90-inch lbs.  Charge air cooler clamps with spring, 60-inch lbs.  The clamp should have room to expand and contract due to heat.