2008 Lexus GX 470 Owners Manual - Page 573

EXPLANATION OF MAINTENANCE ITEMS Nuts and Bolts on Chassis Check that tightness of the seatmounting bolts and front/rear suspension-member retaining bolts matches torque measurements specified in the Repair Manual. Rack and Pinion Assembly Inspect the rack and pinion assembly for signs of leakage, damage and loose electrical connections. Tighten connections and if you discover any leakage or damage, have it repaired immediately by a qualified technician. Road Test While driving the vehicle, check for proper operation of engine, transmission, brakes and steering. Also check for abnormal noise or vibration from any part of the vehicle. Spark Plugs Replace at specified interval. Install new plugs of the same type as originally equipped (see your Owner's Manual). A qualified technician should perform this operation. To ensure optimum engine performance on RX 350, replace only with Denso FK20HR11 plugs or equivalent. Steering Linkage and Boots With the vehicle stopped, check for excessive freeplay in the steering wheel. Inspect the linkage for bending and damage and the dust boots for deterioration, cracks and damage. Replace any damaged parts. A qualified technician should perform these operations. Timing Belt (GX) Replace every 108 months or 90,000 miles. A qualified technician should perform this operation. Timing Chain (LX, RX) The LX 570 and RX 350 are equipped with a timing chain that requires no periodic inspection. Tire Rotation Tires should be rotated according to the instructions in your Owner's Manual. When rotating tires, check pressure and check for damage and uneven wear. If the spare is not rotated, check the condition and pressure of the spare. Scheduled Maintenance Log 69 MAINTENANCE