Boss Air Compressor IT4 74HP

1. Change compressor oil and oil filter element.

3. Check battery hold-down and cables for wear.

4. Check engine air filter connections, fittings, and clamps.

5. Check compressor air filter connections, fittings, and clamps.

6. Check radiator hoses and clamps.

7. Check integrity of engine mounts.

Initially the filter should be replaced after the first 50 hours of operation, then every 500 hours or 6 months. A dirty filter can restrict oil flow, causing high oil temperature, which will result in a system shutdown.

I. Compressor Oil Filter Replacement

Engine Cooling System Maintenance

The 210 DUS Air Compressor’s engine has a pressurized cooling system that contains a 50/50 mixture of water and ethylene glycol. Maintenance of the system includes the engine coolant, belt tension, fan integrity, and radiator. Further cooling system maintenance is defined in the engine manual.

This diesel engine requires a balanced coolant mixture of water and ethylene glycol base antifreeze. This protects the engine cooling system from corrosion as well as freezing damage. The 210 DUS Air Compressor is shipped from the factory with a 50/50 mixture of water and ethylene glycol. In tropical climates where freeze protection is not required, glycol engine coolant should still be used to help prevent corrosion and pitting of cylinder liners.

Antifreeze concentration level should not exceed recommended levels. To do so can cause cooling system failure.

1. A mixture of 50% antifreeze and 50% water is required for temperatures above -34° F.

2. A mixture of 60% antifreeze and 40% water is required for temperatures below -34° F. This provides protection to -65° F.

1. Drain water from separator tank. More frequent draining may be required under high humidity conditions.

The following are general characteristics for a rotary screw lubricant. Due to the impossibility of establishing limits on all physical and chemical properties of lubricants which can affect their performance in the compressor over a broad range of environmental influences

The responsibility for recommending and consistently furnishing a suitable heavy duty lubricant must rest with the individual supplier if they choose not to use the recommended Boss Industries, Inc. rotary screw lubricant

The lubricant supplier’s recommendation must, therefore, be based upon not only the following general characteristics, but also upon his own knowledge of the suitability of the recommended lubricant in helical screw type air compressors operating in the particular environment involved.

Boss Recommended Compressor Lubricant: DEXRON® III ATF

3. Contains rust and corrosion inhibitors.

1. Install new air filter elements. (compressor and engine)

2. Check all door gaskets, hinges, and latches.

3. Clean and flush engine cooling system

4. Check separator tank pressure relief valve.

5. Clean cooler fins on all coolers.

6. Install new fuel filter and water separator elements.;