MAINTENANCE OPERATIONS ENGINE Cold Engine Operations 1. REPLACE TIMING BELT (a) Remove the timing belt. (See pages EM-22 to 25) (b) Install the timing belt. (See pages EM-28 to 31) 2. INSPECT DRIVE BELTS (a) Visually check the belt for excessive wear, frayed cords etc. If necessary, replace the drive belt. HINT: Cracks on the rib side of a belt are considered acceptable. If the belt has chunks missing from the ribs, it should be replaced. (b) Using a belt tension gauge, check the drive belt tension. Belt tension gauge: Nippondenso BTG-20 (95506-00020) Borroughs No. BT-33-73F Drive belt tension: Alternator Used belt 115 ± 20 lb New belt 175 ± 5 lb PS pump Used belt 115 ± 20 lb New belt 160 ± 20 lb A/C Used belt 105 ± 10 lb New belt 160 ± 20 lb If necessary, adjust the drive belt tension. HINT: • "New belt" refers to a belt which has been used less than 5 minutes on a running engine. • "Used belt" refers to a belt which has been used on a running engine for 5 minutes or more. • After replacing the drive belt, check that it fits properly in the ribbed grooves, especially in the places difficult to see. • After installing a new belt, run the engine for approx. 5 minutes and then recheck the tension.