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COOLING SYSTEM PRESSURE CAP Dip the pressure cap in water; clean off any depos- its on the vent valve or its seat, and apply the cap to CAUTION: The radiator pressure tester is very sen- If the pressure cap tests properly while posi- tioned the on radiator pressure tester, but will not LOW COOLANT LEVEL AERATION Low coolant level in a cross flow radiator will equalize in both tanks with engine off. With engine • Transmission oil will become hotter. • High reading shown on the temperature gauge. • Air in the coolant will also cause loss of flow through the heater. • Exhaust gas leaks into the coolant can also cause the same problems. COOLING SYSTEM DEAERATION Air can only be removed from the system by gath- ering under the pressure cap. On the next heat up it TRANSAXLE OIL COOLER FLOW CHECK Refer to TRANSAXLE—Oil Cooler Flow Check for procedure. ACCESSORY DRIVE BELT Satisfactory performance of the belt driven accesso- ries depends on belt condition and proper belt ten- ACCESSORY DRIVE BELT DIAGNOSIS CONDITION POSSIBLE CAUSE CORRECTION INSUFFICIENT ACCESSORY 1. Belt too loose. 1. Adjust belt tension. 2. Belt excessively glazed or worn. 2. Replace and tighten as specified. BELT SQUEAL WHEN 1. Belts too loose. 1. Adjust belt tension. 2. Belts glazed. 2. Replace belts. Fig. 12 Pressure Testing Radiator Cap 1 – PRESSURE CAP JX COOLING SYSTEM 7 - 15 DIAGNOSIS AND TESTING (Continued) |