1996 Chevrolet Astro Owner's Manual - Page 315

Part C: Periodic Maintenance Inspections Listed below are inspections and services which should be performed at least twice ayear (for instance, each spring fall). You should let your and GM dealer's service department or other qualified service center do these jobs. Make sure any necessary repairs arecompleted at once. Steering and Suspension Inspection Inspect the front and rear suspensionand steering system for damaged, loose ormissing parts, signsof wear, or lack of lubrication. Inspectpower steering linesand hoses for proper hookup, binding, leaks, cracks, chafing, etc. Lubricatethe steering linkage. Exhaust System Inspection Inspect the complete exhaust system. Inspect the body near the exhaust system. Look for broken, damaged, missing or out-of-position parts as well as open seams, holes, loose connections, or other conditions could which cause a heat build-up in the floor pan or could let exhaust fumes into the in vehicle. See "Engine Exhaust" the Index. Accelerator Control System Lubricate all pivot points with engine oil, except the TBI throttle shaft. Do not lubricate the cam pulley. Remove all external deposits from pulley. Do not oil any accelerator or cruise control cables. Replace any cables that have high effort or excessive wear. Drive Axle Service Check readfront axle fluid level add as needed. Check constant velocity and joints and axle seals for leaking. Transfer Case(AI/- Wheel Drive) Inspection Every 12 months or at oil change intervals,check front axleand transfer case and add lubricant when necessary. Oil the control lever pivotpoint and all exposed control linkage. Check vent hose at transfer case for kinks and proper installation. 7-39