Yanmar 3TNV Series Service Manual

Contents

2. Inspection and AdjustmentIMPORTANT:If the coolant water runs short quickly or when the radiator runs short of water with the Coolantrecovery tank level unchanged, water may be leaking or the air tightness may be lost. Increase inthe Coolant recovery tank water level during operation is not abnormal.The increased water in the Coolant recovery tank returns to the radiator when the engine is cooleddown.If the water level is normal in the Coolant recovery tank but low in the radiator, check loosenedclamping of the rubber hose between the radiator and Coolant recovery tank or tear in the hose.StandardEngine: The radiator shall be filled up.(Unit: liter)Model Coolant water volume In an engine3TNV82A 1.83TNV84(T)3TNV88 2.04TNV84(T)4TNV88 2.74TNV94L4TNV98(T) 4.24TNV106(T) 6.0Engine coolant water capacity may differ from the abovevolume depending on an engine installed on a machine unit.(5) Fuel pipe and coolant water pipe inspection and maintenanceCheck the rubber hoses for fuel and coolant water pipes cracked. If the cracked hose is found,replace it with new one. Check the loosened clamp. If found, tighten it.(6) Inspection and adjustment of governor lever and acceleratorMake sure the accelerator of the machine unit can be operated smoothly before starting the engine. Ifit feels heavy to manipulate, lubricate the accelerator cable joints and pivots. Adjust the acceleratorcable if there is a dislocation or excessive play between the accelerator and the governor lever. Referto 3.2.3.(7) Warning lamp & instruments function checkBefore and after starting the engine, check to see that the alarm function normally. Failure of alarmcannot warn the lack of the engine oil or the coolant water. Make it a rule to check the alarm operationbefore and after starting engine every day. Refer to each manual for machine units in details.2.2.2 inspection after initial 50 hours operationBe sure to check the following points after initial 50 hours operation, thereafter every 250 hours or 3months operation.No. Inspection Item(1) Lube oil and filter replacement(2) V-belt tension check(1) Lube oil and filter replacement (1st time)When an engine is still hot, be careful with a splash of engine oil whichmay cause burns. Replace engine oil after the engine oil becomes warm.It is most effective to drain the engine oil while the engine is still warm.25