24. SERVICE PROCEDURE 24.5.4 CLEAN, CHECK RADIATOR FINS AND AFTER COOLER FINS If the radiator fins become clogged or bent, this may cause overheating of the engine, so always clean or carry out inspection and take the necessary actions. Cleaning can be carried out by using jets of air, steam, or water, but be careful not to let the nozzle contact the fin. Air pressure: Max. 98.1 N·m (10 kgf/cm 2 , 72.3 lbft) Steam pressure: Max. 39.2 N·m (4 kgf/cm 2 , 28.9 lbft) When using compressed air or steam, keep the nozzle at a right angle to the radiator. Examine the rubber hose, and if any cracks or brittle places are found, replace the hose. In addition, check also for loose hose clamps.
24.5.5 CHECK WEAR OF FAN BELT Inspect the V-belt and if it is in the following condition, replace the V-belt. The V-belt is in contact with the bottom of the groove of each pulley The V-belt is worn and has sunk below the outside diameter of the pulley The V-belt is cracked or peeling Pull AE134400 Replacing When replacing the V-belt, do as follows. 1. Insert a bar (length: approx. 50 cm (20 in)) into the hole (ш80 mm (3.2 in)) in the tension pulley bracket, then pull strongly. 2. The spring will extend and the tension pulley will move to the inside, so remove the old belt. 3. Install the new belt in the same way. Replace the V-belts as a set.
The machine is equipped with an auto-tensioner, so there is no need to carry out any adjustment until the belt is replaced. 3-63