1994 Chevrolet Astro Owner's Manual - Page 303

13. TIRE AND WHEEL ROTATION AND INSPECTION For 6,000 miles proper wear and maximum tire rotate tires at the first life, I (10 000 kilometers) for Schedule or 7,500 miles (12 500 kilometers) 000 for Schedule I1 and then every 15,000 miles (25 kilometers) 6. thereafter. Follow the instructions and patterns shown in Section Check tiresfor uneven wear or damage. If irregular or premature wear is apparent, check wheel alignment. Also, check damaged wheels. for See "Tires" in the Index more information. for 14. DRIVE AXLE SERVICE - Check readfront axle fluid level and add as needed. Check constant velocity joints and axle sealsfor leaking. Locking Differential - Drain fluid at first oil change and refill. Check fluid level and add as needed at subsequent oil changes. In dusty areasor trailer towing applications, drain fluid at every 15,000 miles (24 135 kilometers) and refill.? Standard Differential -Check fluid level and addas needed at every oil change. In dusty areas or trailer towing applications, drain fluid every15,000 miles (24 135 kilometers) and refill.? 15. BRAKE SYSTEM INSPECTION- When the engine oil is changed, inspect the lines and hoses proper hookup, binding, leaks, cracks, for chafing, etc. Check the parking brake adjustment, and the fluid level worn disc brake pads the master cylinder. low fluid level can indicate A which may need to be serviced.? When the wheels are removedfor rotation, inspect disc brake pads for wear and rotorsfor surface condition. Also inspect drum brake linings for wear and cracks. Inspect other brake parts, including drums, wheel cylinders, parking brake, etc. at the same time. Inspect brakes more often if driving habits or conditions result in frequent braking. -f A fluid loss in these systems may indicate a problem. Have them inspected and repaired at once. 7-9