ENGINE COOLING SYSTEM

eNGINe COOLING sYsTeM Service Specifications

Cooling System Capacity ............................................................................................................. 40 liters (10.5 US gal) Radiator coolant fluid level check ....................................................................................... Every 10 hours of operation Cooling system drain, flush, and refill interval ........................................... Every 2000 hours of operation or each year

Thermostat

Starts to open ............................................................................................................................................. 82°C (180°F) Completely open ......................................................................................................................................... 95°C (202°F) Expansion tank cap ................................................................................................................. 103,4 kPa, 1 bar (15 psi)

Coolant Mixture

A mixture of 50% AKCELA PREMIUM ANTI FREEZE and 50% water must be used in this machine. This mixture is used if the lowest ambient temperature is above -37°C (-34°F). If the ambient temperature is lower, adjust the mixture to 60% AKCELA PREMIUM ANTI FREEZE and 40% water. It is recommended that AKCELA PREMIUM ANTI FREEZE and water be used in your machine all year. NOTe: After you fill the cooling system, mix the AKCELA PREMIUM ANTI FREEZE and water completely by running the engine at operating temperature for approximately five minutes. This procedure must be done when the machine is in temperatures below 0°C (32°F).

WARNING: Hot coolant can spray out if expansion tank cap is removed. To remove expansion tank cap: Let system cool, turn to first notch, then wait until all pressure is released. Scalding can result from fast removal of expansion tank cap. Check and service engine cooling system according to maintenance instructions.

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1. EXPANSION TANK CAP 2. COOLING WATER LEVEL GAUGE 3. REGISTER FOR AIR BLEED

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Replacement of the Liquid and Cleaning of the system

WARNING: The radiator coolant is under pressure. Follow the Operation and Maintenance Manuals indication in order to relief the pressure, before removing the cover from the expansion reservoir.

Turn the expansion tank cap slowly to relieve pressure. Open radiator drain cock located under the radiator and the drain cock located on the oil cooler. Let the coolant drain. Check to see that all hoses are in good condition and the clamps are not damaged or loose. Replace if necessary. After draining, flush the radiator with clean water. Be sure that the water does not contain large amounts of calcium. Fill the cooling system with a mixture of 50% of AKCELA PREMIUM ANTI FREEZE and 50% of clean water to about 1 1/4” (30 mm) below the filler neck. For complete replacement of coolant open the draincock, located in the expansion tank piping, before start feeding the system. This procedure is for removing the air from installation, ensuring the cooling system performance.

RADIATOR DRAIN COCK

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WARNING

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HOT LIQUID UNDER PRESSURE HAZARD

Service when cool.

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1. EXPANSION TANK CAP 2. COOLING WATER LEVEL GAUGE 3. REGISTER FOR AIR BLEED

Install expansion tank cap. Start and run engine until coolant reaches normal operating temperature. Stop engine. Check level of coolant and add if necessary. NOTe: The AKCELA PREMIUM ANTI FREEZE is a protector for water cooling systems. When added in the radiator it assures a perfect thermal exchange, diluted in clean common water, at 50% percentage. The AKCELA PREMIUM ANTI FREEZE is a compound of special additives that avoids the formation of foam, rust, fouling, calcareous, and protecting all the components of the cooling system.

Radiator Cleaning

WARNING: Wear safety glasses with side shield or goggles when using compressed air for cleaning. This reduce the danger of accidents caused by flying particles. Limit the pressure to 30 PSI (2 kgf/cm2).

AIR FLOW DIRECTION WHEN WORKING

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1. 2. 3. 4. AIR NOZZLE RADIATOR TUBES RADIATOR FINS DEBRIS

Use an air compressor and a suitable nozzle to direct a stream of air over and through radiator core in the opposite direction of normal air flow to remove all dirt and debris. NOTe: It may be necessary to spray the exterior of radiator core with water and detergent to remove caked dirt.

Replacing the Cooling system filter

ONLY 865b AND 885b MODeLs

ATTeNTION: Do not use a filter strap wrench to install the new filter. A leak can occur if the filter is dented by the filter wrench.

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7. Rotate the filter shutoff valve 1/4 turn to the OFF position. Cover the alternator with a plastic bag in order to avoid the coolant penetration in it. Using a band wrench, remove the filter by turning it counterclockwise. Discard the old filter. Use a clean cloth and clean the filter mounting area on the filter head. Apply a thin layer of clean grease or oil to the gasket of the new filter. Turn the new filter clockwise onto the base until the gasket makes contact with the base. Continue to tighten the filter for 1/2 to 3/4 turn with you hand. Rotate the filter shutoff valve 1/4 turn to the ON position.

COOLING SYSTEM FILTER