106 OPERATION Brakes • Condition of brake drums. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.) • Condition of brake hoses: check for any chafing. • Check brake chamber mounting bolts and brackets. • Check slack adjusters and chamber push rod travel. With brakes applied or released, look for conspicuously different positions of the slack adjusters. • Check spring brakes. Step 6: Rear of Vehicle Area Frame Area • Frame or cross members not bent, cracked or otherwise damaged or missing. • Check that air tubing and electrical lines are properly secured to the frame with no damage or chafing. Lights and Reflectors • Tail lights, brake lights and turn signal lights: operating, clean and proper color. Step 7: Coupling System Area Fifth Wheel • Securely mounted to the frame. • No missing or damaged parts. • Check that trunnion and plate are properly lubricated. Sliding Fifth Wheel • Mechanism not worn, bent, damaged or parts missing. • Properly lubricated. • All locking pins present and locked in place. • If air operated: no air leaks.
https://www.truck-manuals.net/
