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Tightening Torque: Follow the manufacturer's recommended torque specifications when tightening fittings and connections. Over-tightening can damage threads or cause leaks, while under-tightening can result in loose connections.

Compatibility and Sizing: Ensure that the air conditioning hoses are compatible with the bus's air conditioning system and that they have the correct sizing and specifications. Using the wrong size or type of hose can lead to performance issues and refrigerant leaks.