Servicing and maintenance works Cooling system z Open cooler locking cap carefully. z Place suitable collecting containers underneath. z Remove the locking screw (1) in the crankcase. z Drain coolant. z If the locking screw is not accessible, the drain- age can be carried out at the engine oil cooler (coolant duct). z Insert screw again with sealant. z Close cooler locking cap. 48 © 2009 Emptying the cooling system 1 z Open the cooling system cap (1) carefully. z Check the coolant aditive concentration in the cooler/compensation tank (2) with a convention- al antifreeze measuring device (1) (e.g. hydrom- eter, refractormeter).
z Necessary coolant additive concentration Cool- ant mixing ratio ( 35 ). You can order the appropriate test instrument from your DEUTZ partner under order number 1824. Check coolant additive concentration 6 Specifications when working on the cooling sys- tem Danger of scalding from hot coolant! Cooling system under pressure! Only open the cap when cool! The coolant must have a prescribed con- centration of cooling system corrosion pro- tection agent! Observe safety regulations and national specifications when handling cooling me- dia. Observe the manufacturer's specifications for an external cooler. Dispose of leaking liquids properly and do not allow them to seep into the ground.
Order coolant corrosion protection agent from your DEUTZ partner. Never operate the engine without coolant, even for a short time! Checking the coolant level with an external cool- er z Fill in new coolant and vent the system according to the specifications of the cooling system manu- facturer. z Open the cooling system cap (1) carefully. z The coolant level must always be between the MIN and MAX marks of the compensation tank! Fill up to the MAX mark if necessary.