7-40 OM ET18/20/24 us 1.3 * et18_20_24w710.fm77.11 V-beltChecking V-belt condition and tensionWARNINGInjury hazard due to rotating parts!Rotating parts can result in severe injury or death.► Stop the engine before opening the engine cover.► Only check the V-belt when the engine is stopped.NoticePossible damage to property in case of a malfunctioning V-belt.► Do not start the engine.1. Place the machine on firm, level and horizontal ground.2. Stop the engine. See “Preparing lubrication”.3. Remove the starting key and carry it with you.4. Let the engine cool down.5. Open the engine cover.6. Carefully check V-belt A for damage, cracks or cuts.7. If the V-belt is damaged (cracks, wear, ruptures, etc.):➥ Have the V-belt replaced by a Wacker Neuson service center.➥ Replace the V-belt if it touches the base of the V-belt groove or ifthe pulleys are damaged.8. Press with your thumb about 100 N (22.5 lbf) to check the deflection ofthe V-belt between the crankshaft disc and the fan wheel.9. A new V-belt should have a deflection of 6 to 8 mm (0.24 to 0.31 in), aused V-belt (after about 5 minutes running time) should have adeflection of 7 to 9 mm (0.27 to 0.35 in).10.If V-belt tension is not correct:➥ Have the V-belt replaced or retightened by a Wacker Neusonservice center.11.Close and lock the engine cover.Fig. 259: Checking V-belt condition and tensionAbout 8 mm (0.31 in)A
