Look at the belts to see whether they are glazed or cracking, a glazed belt will come out a smooth surface due to slipping, whereas a good belt will have a slight feel of cloth. The cracks normally start at the inner edge and go outwards. Always replace any damaged or worn drive belts, preferably all at the same time as a preventive maintenance measure. Inspect the drive belts regarding wear and tension, changing the worn ones that are dirty, squeaky or frayed. Some of the models can have an adjusting bolt on the idler pulley or on the steering power pump so that setting the tension of the belt can be easily adjusted without overstraining the accessory. In any model that has the idler pulley with a lockbolt, loosen it and then appropriately adjust the tension, but always replace the lockbolt. The deflection on used ribbed V-belts driving an air conditioner and
Power Steering Pump should be approximately one quarter-inch. Pressing with thumb at the middle of the belt between pulleys to check deflection, loosen the alternator mount and tighten bolts if needed. The Navajo model has one main accessory drive belt that has a spring stayed tensioner that does not have any setting unless there is undue wear or squealing. To remove and install the power steering pump belt, loosen the lockbolt in the idler pulley and set the tension and then re-install. The alternator belt needs to have access to the pivot bolt and a readjustment of the tensioner lockbolt. In the case of the A/C compressor belt, adjust tension, release the tension and make sure that the belt is in place before tension adjustment. All Navajo/B Series Pick-up engines use wide-ribbed V series engines with engine accessories and can be changed by pivoting the tensioner to slacken the belt which is designed to be properly routed and seated in the pulleys.